Questions Asked on
February 16, 2012

Chemistry
How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL) Is it 2.28mL of conc HCl dilute to 100mL with water? Please show the calculation steps.
asked by annie 
Chemistry
at 25C and 795 torr, carbon dioxide has a solubility of 0.0356 M in water. What is the solubility at 25 C and 2070 torr? ____ M I know that at a given temperature, the solubility of a gas in a liquid is directly proportional to its pressure but how would
asked by David 
chemistry
What volume does 16.0g of o2 occupy at stp
asked by ricardo 
AP CHEMISTRY
An unknown salt is either KBr, NH4Cl, KCN, or K2CO3. If a 0.100 M solution of the salt is neutral, what is the identity of the salt?
asked by MARY 
physics
what is the wavelength of an X ray photon with energy 10 keV?(10,000eV)? what is the frequency?
asked by zoryana 
Math
The equation V=1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation for B. Please help me and show your work thanks
asked by Ann 
Calculus
Find the volume of the solid by subtracting two volumes, the solid enclosed by the parabolic cylinders y = 1  x 2, y = x 2  1 and the planes x + y + z = 2, 6x + y  z + 16 = 0.
asked by Aaron 
Social Studies
Why did President Abraham Lincoln want Reconstruction to be simple and easy? Choices are: A. He wanted to win the votes in the South in his reelection campaign. B. He wanted to keep a good working relationship with former Confederates who would probably
asked by Samantha 
chemistryThermochemistry (grade 12)
calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) > N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) > N2(g) + 2H2O(l) Enthalpy of H = 6.22.2 kJ H2(g) + (1/2)O2(g) > H2O(l) enthalpy of H = 285.8 kJ/mol H2(g) + O2(g) > H2O2(l) enthalpy of
asked by Rose Bud 
AP CHEMISTRY
If a solution of HF (Ka = 6.8*104) has a pH of 3.42, calculate the total concentration of hydrofluoric acid.
asked by MARY 
physics
A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 25 N to stretch the bands 1.1 cm. a) What is the equivalent spring constant of the rubber bands? Answer in units of N/m b) How much force is required to pull
asked by Ashley 
Chemistry
At 15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water. I'm confused on how you pick the
asked by Tracy 
Physics
1. A car starts from rest and accelerates uniformly at 3.0 m/s2. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2. How long does it take the second car to overtake the first car? 2. A ball is thrown downward
asked by G 
AP CHEMISTRY
Calculate the pH of a solution made by adding 3.50 g of lithium oxide (Li2O) to enough water to make 1.290 L of solution. (Kw = 1.0 1014)
asked by Stanley3000 
physics
a 100 V DC signal is applied to four resistors as shown in Fig. 5. The values of the resistors are 20 ohm, 40 ohm, 60 ohm and 80 ohm. What is the voltage across the 40 ohm resistor?
asked by fatih 
Physics
King Kong carries Fay Wray up the 321 m tall Empire State Building. At the top of the skyscraper, Fay Wray’s shoe is knocked off with an initial upwards velocity of 5.1 and falls towards the ground. With what final velocity will the shoe be moving when
asked by Rachel 
statistics
The Acme Company has developed a new battery. The engineer in charge claims that the new battery will operate continuously for at leas 7 minutes longer than the old battery. To test the claim, the company selects a simple random sample of 100 new batteries
asked by Maria E. S. 
physics
two unknown resistors a and b are connected together. when they are connected in series their combined resistance is 15 ohm. When they are connected in parallel, their combined resistance is 3.3 ohm. What are the resistances of A and B?
asked by fatih 
chemistry
Given the following equation, how many grams of PbCO3 will dissolve when exactly 1.0 L of 1.00 M H+ is added to 6.00 g of PbCO3? When the equation is PbCO3(s) + 2H(+)(aq) = Pb(2+)(aq) + H2O(l) + CO2(g) Please explain in detail, step by step
asked by Tori 
physics3
A cannonball is catapulted toward a castle. The cannonball's velocity when it leaves the catapult is 39 m/s at an angle of 40° with respect to the horizontal and the cannonball is 7.0 m above the ground at this time. (a) What is the maximum height above
asked by Anonymous 
Physics
The body of a 1297 kg car is supported on a frame by four springs. The spring constant of a single spring is 1.24 × 10 4 N/m. Four people riding in the car have a combined mass of 259 kg. When driven over a pothole in the road, the frame vibrates and for
asked by Angel 
chemistry homework help!!
Calcium Hydride reacts with water to produce hydrogen gas: CaH2(s) + H2O (l)> Ca(OH)2 (aq) + H2 This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many
asked by danielle 
chemistryThermochemistry (grade 12)
calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) > N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) > N2(g) + 2H2O(l) Enthalpy of H = 6.22.2 kJ H2(g) + (1/2)O2(g) > H2O(l) enthalpy of H = 285.8 kJ/mol H2(g) + O2(g) > H2O2(l) enthalpy of
asked by Rose Bud 
geometry
quadrilateral JKLM is graphed in the coordinate plane.Classify quadrilateral JKLM as specifically as possible.Show your work, and explaine why your answer is correct?
asked by Anonymous 
chemistry
calculate the theoretical weight of sodium borohydride need to reduce 50 mg of benzil
asked by vanessa 
Calculus
find y'' if x^4+y^4=16
asked by Johnathan 
match
A certain land area is 340,000 square miles, and it holds a population of 63.1 million people.Calculate the population density.
asked by Liz 
Math
Find a linear equation whose graph is the straight line with the given property. Through (2, −7) and (1, 1) I got 8x23, I know it doesn't match, maybe its the wrong formula Find a linear equation whose graph is the straight line with the given
asked by Jane 
Physics
The distance between two successive crests of a certain transverse wave is 1.12 m. Eight crests pass a given point along the direction of travel every 12.3 s. Calculate the wave speed. Answer in units of m/s
asked by Ashley 
Physics
The body of a 1290 kg car is supported on a frame by four springs. The spring constant of a single spring is 2.59 × 104 N/m. Four peo ple riding in the car have a combined mass of 246 kg. When driven over a pothole in the road, the frame vibrates and for
asked by Steve 
Chemistry
If a 2.6 g of weak diprotic acid were dissolved in 100 mL of water and a 10 mL aliquot of this solution required 21.6 mL of 0.1 M NaOH to reach the first endpoint, what are the equivalent and formula weights of H2A? I think I first need to find the moles
asked by jhon 
Physics
When a mass of 21 g is attached to a certain spring, it makes 16 complete vibrations in 4.4 s. What is the spring constant of the spring? Answer in units of N/m
asked by Joanne 
ChemistryThermochemistry (grade 12)
A 65.0 g sample of 0.600 M HI at 18.46 degrees celsius is added to 84.0 g of solution containing excess KOH, also at 18.46 degrees celsius. The final temperature is 21.96 degrees celsius. Calculate the enthalpy of H for the reaction. Assume the specific
asked by Rose Bud 
Social Studies
What group believed President Lincoln's Reconstruction plan was too easy? Choices are: A. Democrats B. Freedmen C. U.S. Senate D. Radical Republicans
asked by Samantha 
Physics please help its urgent i need help
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)
asked by John 
Chemistry
5.70 g of NH4Cl is added to 13.3 g of water. Calculate the molality of the solution.
asked by Heather 
physics
A wave traveling in the + x direction has an amplitude of 0.35 m, a speed of 5.2 m/s, and a frequency of 14 Hz. Determine: 3.1.the wavelength, (2) 3.2.the wave number, (2) 3.3the angular velocity, (2) 3.4. the equation of the wave
asked by joe 
maths
find the perpendicular distance from the corner of the triangle to the opposite side if the side is 25cm long
asked by molly 
AP CHEMISTRY
1)calculate [OH] and pH for each of the following solutions. (Kw = 1.0*10^14.) a)0.101 M NaF b) 0.030 M Na2S c)a mixture that is 0.019 M in CH3COONa and 0.036 M in (CH3COO)2Ba please help and if u can try to explain
asked by MARY 
chemistry
At STP, when 3.75 liters of oxygen reacts with excess glucose, what volume of carbon dioxide does it produce?
asked by Zee 
AP CHEMISTRY
A) At 800 K the equilibrium constant for I2(g) 2 I(g) is Kc = 3.1 105. If an equilibrium mixture in a 10.0L vessel contains 3.44*102 g of I(g), how many grams of I2 are in the mixture? answer is .060g B)For 2 SO2(g) + O2(g) 2 SO3(g), Kp = 3.0*104 at 700
asked by HELP PLEASE 
physics
A proton moves in a constant electric field from point A to point B. The magnitude of the electric field is 6.4 × 10^4 N/C; and it is directed as shown in the drawing, the direction opposite to the motion of the proton. If the distance from point A to
asked by Daniel 
geometry
A farmer has a triangular field with sides that measure 120 yards, 170 yards, and 220 yards. Find the area of the field
asked by tori 
physics
The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the
asked by Anon 
Chemistry
Can someone confirm that I'd be doing this right? If an 0.520 m aqueous solution freezes at 3.00 C, what is the van't Hoff factor, i, of the solute? It says I can find the Kf values on a table. I had no idea which Kf value to use... so i just used
asked by David 
Physics
The body of a 1269 kg car is supported on a frame by four springs. The spring constant of a single spring is 2.75 × 10 4 N/m. Four people riding in the car have a combined mass of 256 kg. When driven over a pothole in the road, the frame vibrates and for
asked by Angel 
chem
How to find the %(W/V) of 134mL of a 0.610 M solution of Mg(OH)2
asked by chem 
Physics
A conducting hollow sphere of radius. 2m and charge 20 micro coulumbs. What is the potential of the sphere at a distance r from the center if: A)r= .1m? b)r= .2m? c) r=.3m?
asked by anne 
chemistry homework help!!
many gases are shipped in high pressure containers. consider a steel tank whose volume is 42.0L and which contains O2 gas at a pressure of 165atm at 23 degrees celsius. 1.) what mass of O2 does the tank contain? 2.) what volume would the gas occupy at STP?
asked by danielle 
math
2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other airport. One reaches its airport half an hour before the other plane reaches the other airport. How fast is the wind blowing?
asked by Ed 
Physics
A skier with a mass of 56 kg starts from rest and skis down an icy (frictionless) slope that has a length of 70 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes
asked by Michelle 
Trig
what is the amplitude, period, phase shift, and vertical shift of each equation? 1. y= A cos(B(x3))+4 2. y=2sin(2piX/3) 3. y=4cos(3pi(x+3)) 4. y= 3cos(2(xpi/4))+0.4 thank you so much!
asked by BreAnne 
physics
A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 33 N to stretch the bands 1.3 cm. A) what is the equivalent spring constant of the rubber bands? Answer in n/m B) how much force is required to pull the cup
asked by imel 
physics PLEASE help
A 5.0kg block is at rest on a horizontal floor. If you push horizontally on the 5.0kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0kg block is stacked on top of the 5.0kg block. What is
asked by Julie 
physics
A water balloon was dropped from a high window and struck its target 3.9 seconds later. If the balloon left the person's hand at 8.4 m/sec, what was its velocity on impact?
asked by Rachel 
Physics
Microwaves travel at the speed of light, 3.00× 108 m/s. When the frequency of microwaves is 3.67× 109 Hz, what is their wavelength? Answer in units of m
asked by Angel 
calculus
find the point (or points) where the ellipse 9x^2+4y^2=36 has maximum curvature. don't even know where to start with this one.
asked by brian 
physics
The charges and coordinates of two charged particles held fixed in an xy plane are q1 = 2.32 Î¼C, x1 = 3.08 cm, y1 = 0.793 cm and q2 = 3.14 Î¼C, x2 = 1.75 cm, y2 = 1.05 cm. At what (a)x and (b)y coordinates should a third particle of charge q3 = 5.72
asked by Antonio 
physics
A hose ejects water at a speed of 2m/s through a hole of area 0.01m2.if the water strikes a wall normally,calculate the force on the wall in Newtons,assuming the velocity of water nomal to wall is zero after collision.
asked by mariam 
physics5
During a walk on the Moon, an astronaut accidentally drops his camera over a tall cliff. It leaves his hands with zero speed, and after 2.1 s it has attained a velocity of 3.4 m/s downward. How far has the camera fallen after 4.2 s?
asked by Anonymous 
American Goverment
Which phrase from the U.S. Constitution BEST reflects the principle of popular sovereignty? A. “No person shall be a Senator . . .” B. “The Congress shall have the Power . . .” C. “We the People . . .” D. “Establish Justice . . .”
asked by lalt 
Social Studies
Why was Lincoln assassinated? Choices are: A. Booth had a mental illness B. Booth blamed Lincoln for the war C. Booth shot the president by accident D. Booth was paid by southern sympathizers to kill the president
asked by Samantha 
calculus
An equation of the line tangent to the graph of f(x) = (4x2  8x + 3)4 at the point where x = 1 is:
asked by Anonymous 
Psychology
Explain how even though images appear on the retina in twodimensional space, we are able to perceive objects in threedimensions ====== can someone answer this please? or give me an idea of this question? thanks
asked by SIST 
physics
A 5.0kg block is at rest on a horizontal floor. If you push horizontally on the 5.0kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0kg block is stacked on top of the 5.0kg block. What is
asked by Julie 
physics
A toy gun uses a spring to project a 5.6 g soft rubber sphere horizontally. The spring constant is 10.0 N/m, the barrel of the gun is 14.3 cm long, and a constant frictional force of 0.036 N exists between barrel and projectile. With what speed does the
asked by Anonymous 
college physics
A 1500 wrecking ball hangs from a 16 long cable. The ball is pulled back until the cable makes an angle of 23.0 with the vertical.
asked by stew 
Financial Accounting
Prepare the general journal entries for the following transactions: Jan 2, 2011  Purchased land with a building on it for $750,000. The land is worth $300,000. Paid $150,000 cash down and signed a mortgage payable for the balance. Dec. 31,
asked by Diane 
econ
in "The mark of the beast" how does the narrator feel about Eastern gods at the end of the story?
asked by Elsie 
physics
A 0.700kg ball is on the end of a rope that is 0.90 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical
asked by Angelina 
Physics
While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.
asked by GG 
physics helpppp!!
The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound
asked by joey 
math
a submarine is 294 feet below sea level. a helicopter is flying diretly over the submarine 1277 feet above sea level. what is the distance in feet from the helicpter to the submarine? i got 1571 feet is that righ?
asked by marko 
Probability
Five out of 8 bags of M&M's had exactly 32 pieces in them. How many bags out of 40 should have exactly 32 pieces?
asked by Anonymous 
Physics Help
While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.
asked by GG 
chemistry
Determine the volume of a 0.550M of kmno4 solution required to completely react with 2.70 of zn
asked by ain 
chemistry homework help!!
Dry ice (solid CO2) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse added and the hole plugged. When lit the exploding gunpowder rapidly vaporizes the dry ice
asked by danielle 
physics2
A drag racer crosses the finish line of a 304.8 m track with a final speed of 121 m/s. (a) Assuming constant acceleration during the race, find the racer's time and the minimum coefficient of static friction between the tires and the road. time 1 s minimum
asked by Anonymous 
chemistry
if gasoline has a density of 0.65g/cm what would the mass of a 34 liter tankful of gasoline in kilograms and weight in pounds be? How would this formula be set up
asked by Anonymous 
Physics
A 10 g particle is moving to the left at 20 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?
asked by Hayden 
geometry
a tree cast a shadow 25 feet long. the angle of elevation from the far end of the shadow to the top of the tree is 64 degrees,find the heighth of the tree
asked by tori 
Physics
A mass of 0.24 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m
asked by Steve 
Physics
A load of 47 N attached to a spring that is hanging vertically stretches the spring 0.22 m. What is the spring constant?
asked by Joanne 
History
Hi! I need help with my history paper regarding the Russian revolution and urbanism. Does anyone know good sources? Also, I need insights with the idea that: Once a place has been urbanized, it never goes back. In a way, the Russian revolution did not
asked by anastasia 
Chemistry
A flask containing a gas was connected to both a closedend and an openend manometer. In the closedend manometer, the mercury in the sealed arm was 755 mm above the level in the arm connected to the fax. In the openend manometer,the arm connected to the
asked by Katie 
PHYSICS HELP
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. A)Find his initial acceleration. i put 7.68*
asked by Gina 
Engliish LitPlease check
"Those RULES of old discover'd not devis'd Are nature still, but Nature Mehtodiz'd Nature, Like Liberty is but restrain'd By the same Laws which first herself ordain'd What is this an example of simile hyperbole analogy overstatement personification I'm
asked by Jasmine 
Physics
The density of air near the earth's surface is 1.29 kg?m^3. If a helium balloon with a mass of 1 kg floats in air without rising or falling,what is the minimum volume of helium in the balloon? (presume that the mass of the material making up the balloon is
asked by Jonathon 
chemistry
A flask containing a gas was connected to both a closedend and an openend manometer. In the closedend manometer, the mercury in the sealed arm was 755 mm above the level in the arm connected to the fax. In the openend manometer,the arm connected to the
asked by Katie 
math
B=1.69 (sqrt (s)+4.45)3.49 solve for s
asked by Melissa 
NU
Determine the net force necessary to give an object with a mass of 3.4 kg an acceleration of 4.3 m/s2
asked by Sarah 
physics
A visitor to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is
asked by Ashley 
American Goverment
The Preamble of the U.S. Constitution “We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of
asked by lalt 
statistics
It is estimated that amounts of money spent on gasoline by customers at their gas stations follows a normal distribution witha standard deviation of $3. It was also found that 10% of all customers spent more than $25. What percentage of customers spent
asked by Anonymous 
physics
The coefficient of static friction between a block and a horizontal floor is 0.35, while the coefficient of kinetic friction is 0.12. The mass of the block is 4.5 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of
asked by Julie 
physics
A ball is thrown horizontally off the edge of a cliff with an initial speed of 20.4 m/s. (a) How long does it take for the ball to fall to the ground 20.3 m below? 1 s (b) How long would it take for the ball to reach the ground if it were dropped from rest
asked by Anonymous 
chemistry
C2H5OH + 3O2 > 2CO2 + 3H2O How many grams of O2 are consumed when 5.86 ml of Ethanol burns completely (the density of C2H5OH is 0.789 g/ml)?
asked by Delta 
Algebra 1
Tell whether a correlation is likely. If it is, tell whether the correlation reflects a casual relationship. Explain your reasoning. the amount of time you study for a test and the score you receive the shoe size and the salary of a teacher
asked by Dayana 
geometry
On a map, Town A is 8 km due south of Town B, Town C is 9 km from Town A, and Town C is 3 km from Town B (see figure below). Find the bearing from Town A to Town C and the bearing from Town B to Town C.
asked by tori 
Psychology
Discuss the extent to which the brain has the capacity for repair. Include concepts such as plasticity, collateral sprouting, substitution of function, and neurogenesis.
asked by Venssa 
Wow is there no one to help with physics???
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)
asked by John 
Physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics 
asked by I dont know y no one is helping me :/ 
Simple Interest & Maturity Value
On September 7, Jennifer Rick went to Park Bank to borrow $3,200 at 11 2/3% interest. Jennifer plans to repay the loan on January 5. Assume the loan is on ordinary interest (ordinary interest uses 360 days a year). Solving for: 1. interest Jennifer will
asked by Angie 
statistics
PROBLEM 4: PREFERENCE FOR CAN (a) What is the probability of preferring a glass bottle? b) What is the probability of preferring a glass bottle given that one lives in Region A? c) What is the probability of preferring a can given that one lives in Region
asked by Mimi 
Managerial Accounting
During June, the receipts and issuances of Material No. A2FO are as follows: Received June 3 1,100 units @ $15 16 1,700 units@ $17 29 900 units@ $18 Issued June 11 700 units 4 Job No. 116 18 1,900 units 4 Job No.117 30 800 units 4 Job No. 118 A) Determine
asked by Ryan 
Math sequence
The sum of the first 5 terms of an arthmetic sequence, is 30 and the sum of the next 4 terms is 69 . Find the arthemetic progression?
asked by Abdela 
American Goverment
What is the main function of the State Department? A. to determine foreign policy B. to determine domestic policy C. to determine financial policy D. to determine military policy ?
asked by lalt 
statistics
Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable: number of bank deposits in a month
asked by holland pattent 
statistics
2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade
asked by kabita 
Physics
How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?
asked by Beth 
physics
When a mass of 28 g is attached to a certain spring, it makes 19 complete vibrations in 3.9 s. What is the spring constant of the spring? Answer in units of N/m
asked by Monique 
physics
A woman is riding a Jet Ski at a speed of 27.9 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 21.0°. This situation is like that of a car on a curve that is banked at an angle of 21.0°. If she
asked by Blake 
physics
A visitors to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is
asked by imel 
Science
I am learning how to balance a chemical equation but I don't understand it at all. I read that in order to balance the equation, you need to find the number of atoms. How do I do that? How do you balance a chemical equation?
asked by Michael 
physics
A particle that undergoes simple harmonic motion has a period of 0.4 s and an amplitude of 12 mm. The maximam velocity of the particle is?
asked by Abdela 
math
Is a trapezoid also a parallelogram? Explain why or why not.
asked by Isabella 
Physics
There is a box resting on a table connected to a second box hanging off the edge of the table by a string that is run through a pulley. The mass of the first box is 3.50 kg. and The mass of the second box is 2.8 kg. What is the tension in the string
asked by Nicole 
Math
A cab charges $2.95 for the first 1/4 mi and charges $0.65 for every additional 1/4 mi or apart thereof. What is a possible distance a customer can travel with $67.20? Express the answer to 1 decimal place.
asked by Rose 
physics
The car has a mass of 1200kg Calculate the kinetic of the car when it travels at a speed of 12 m/s.
asked by Dan 
physics
a ball is dropped from a height of 10 meters.if the energy of the ball is reduced by 40% after striking the ground,how high can the ball bounce back?
asked by sherry 
Math
Every 6th customer gets a coupon for juice and every 9th gets a coupon for snacks get a coupon for snacks which customer is the first to get both?
asked by Anonymous 
Science
How many grams of oxygen are collected in a reaction where 230. mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
asked by JJ 
MATH HELP
In what proportion should 95% alcohol be mixed with 30% alcohol to make 70% alcohol?
asked by Vicki 
Physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics 
asked by Anonymous 
Math
14w/8=3w/421 Please help me solve this and show work
asked by Melea 
Writing
Don’t you just wish you can have the time of your life without your parents? I know I wish I could. I would like to go out and hang out with my friends without parents such at parties with no chaperone. First reason is I could have a better relationship
asked by Mia 
math
You are designing a rain gutter made from a piece of sheet metal that is 1 foot by 5 feet. The gutter is formed by turning up two sides. You want the rain gutter to have the greatest volume possible. Below is the polynomial function that represents the
asked by john 
Physics
What is the freefall acceleration in a location where the period of a 0.594 m long pendulum is 1.55 s s? Answer in units of m/s
asked by Angel 
Physics1
When a mass of 21 g is attached to a certain spring, it makes 23 complete vibrations in 5.0 s. What is the spring constant of the spring? Answer in units of N/m
asked by Eddy 
Physics
Two circuits (the figure below) are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 4.00 W of power, how much power does each bulb in circuit 2 dissipate? Ignore
asked by jason 
English
Which of the following is punctuated correctly? Choices are: A. President Roosevelt described December 7, 1941 as a date which will live in infamy. B. President Roosevelt described December 7, 1941 as a date, which will live in infamy. C. President
asked by Samantha 
chemistry
Ethyne, C2H2, combusts explosively to produce carbon dioxide and water. How many moles of ethyne area required to yield 4.98 moles of water?
asked by Leslie 
Chemistry
A chemist wants to make a solution of 3.4 M HCl. There are two solutions of HCL that he can find on the shelf. One has a concentration of 6.0 M, while the other has a concentration of 2.0 M. Which solution can the chemist use to make the desired acid?
asked by Hunter 
Physics need help thnk you
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)
asked by Anonymous 
chemistry
How many molecules of hydrogen gas are produced by the reaction of tin with 20.0 L hydrogen mono fluoride at STP
asked by Bob 
Physics
A mass of 0.40 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m what is the rearranged equation to get for k?
asked by Anonymous 
Math
3k/5+44=12k/25+8 Please help me solve this and show your work thanks
asked by Carly 
physics
A freight train has a mass of 1.5 107 kg. If the locomotive can exert a constant pull of 6.9 105 N, how long does it take to increase the speed of the train from rest to 72 km/h? min
asked by smh 
Math
Solve the following problem. The owner of a toy store is taking inventory of bicycles and tricycles in an unusual way. He said he counted 50 wheels and 40 pedals.How many bicycles and how many tricycles did he have?
asked by Alicia 
physics
A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.10 m. What is the spring constant?
asked by imel 
math
use one or more properties to rewrite the expression as an expression that does not use parentheses. (px1)x6
asked by Anonymous 
Physics
A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 968 and 1550 N, respectively. The acceleration of the cable is 0.620 m/s2, upward.
asked by Steve 
word problem
Leon bought a 10 speed bicyle on sale for 75% of oringinal price.The sale price was $41 less than the origina lprice. find the original price and the sale price.
asked by Anonymous 
Physics
A mass of .24 kg is attached to a spring and is set into vibration with a period of .30 s. What is the spring constant of the spring? Answer in units of N/m
asked by Monique 
science
EXPLAIN ELECTROMAGNETISM
asked by SREEVENI 
Physics
A mass of 0.40 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m
asked by Angel 
Physics
About 5.12 x 104 m above Earth's surface, the atmosphere is sufficiently ionized that it behaves as a conductor. The Earth and the ionosphere form a giant spherical capacitor, with the lower atmosphere acting as a leaky dielectric. Find the capacitance C
asked by jason 
Physics
Two circuits (the figure below) are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 4.00 W of power, how much power does each bulb in circuit 2 dissipate? Ignore
asked by jason 
fractions
ordering fractions least to greatest 3/7 1/9 2/3
asked by diego 
physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars
asked by sara 
Physics
A computer is reading data from a rotating CDROM. At a point that is 0.037 m from the center of the disc, the centripetal acceleration is 130 m/s2. What is the centripetal acceleration at a point that is 0.064 m from the center of the disc?
asked by Blake 
algebra
can you simplify Simplify 5m  13n  n + 4m
asked by sierra 
Physics
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 50.0 vibrations in 26.6 s. A given crest of the wave travels 355 cm along the rope in a time period of 12.1 s. What is the wavelength? Answer in units of m
asked by Angel 
Math
the green bay packers ordered roast beef subs and turkey subs for lunch. a total of 53 subs were ordered. the number of roast beef subs ordered is 2 more than twice the number of turkey subs. write and solve a system of linear equations to determine how
asked by Chris 
Math
Does the order pair make the equation y equals 5 x+3 true 1'8
asked by Natalie quezada 
algebra1
I have no idea how tp simplify 2 sq.root203 sq.root72 sq.root5+4 sq.root63? I guessed 2 sq.root53 sq.root7+4 sq.root63 is it right?
asked by katelynn 
physics6
In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 1017 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the
asked by Anonymous 
physics
A telescope has an object whose focal length is 60cm. (a)The telescope is used to watch a young zebra 500m away.If the image of the zebra is 20mm long and is located 25cm infront of the eye piece,find the actual length of the zebra
asked by victor.m 
math
Without a calculator, find the exact value of csc20° − cot 40° , showing work.
asked by suvaion 
Calculus
find y' if sin^1(xy)=cosy
asked by angie 
physics14
In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 1017 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the
asked by jm 
History
Which of the following words best describes the climate of New Zealand..a) tropical b) temperate c)arid d)artic
asked by Tiff 
Physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics 
asked by Anonymous 
English
Yes, you are right. Thank you very much for giving me advice, too! By the way, I need to include this sentence in an email. Could you please check it? 1) As promised, I'm sending you both the email address and the password of my first class so that your
asked by Henry2 
math .please help its worth alot of my grade :s
The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;
asked by amy 
College: HCA/220 Week 3 DQ 2
You are a health care administrator, and the nursing supervisor approaches you with concerns about documentation in a patient's chart. While reading the chart, you discover some concerns regarding how things are being documented. Begin discussing the
asked by Christina Mader 
math
If 16 points are arranged in a circle, how many lines are needed to join every point at once?
asked by Haley 
English
Thank you very mch for comforting me. Actually, my son likes playing football though his performances are not very good. He likes getting enganged in the various activities and talking to his friends while doing them. He does his best to kick the ball,
asked by Henry2 
Physics
The distance between two successive crests of a certain transverse wave is 1.42 m. Eight crests pass a given point along the direction of travel every 19.5 s. Calculate the wave speed. Answer in units of m/s
asked by Angel 
math
the area of a squre is 9 square yards. 3x3x3x3 what is the are of the square in squar feet? i got 81 square feet is that right?
asked by marko 
Physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N
asked by Adam 
chemistry
How many milliliters of a 155 mL solution of 1.7 M AlCl3 must be used to make 70 mL of a solution that has a concentration of 0.21 M Cl?
asked by Kate 
programming
How to work this programming problem Write a program that allows the user to input a total dollar amount for an online shopping order and computers and outputs the shipping cost based on the following schedule Order total Ship within USA Ship to Canada
asked by Bettie 
Calc
You are a lab technician and must create 250 ml of a 17% saltsolution. a. If you have 500 ml of 28% saltsolution, how many milliliters of it should you mix with water in order to create 250 ml of a 17% saltsolution? b. If you have 400 ml of 40%
asked by Fatih 
Calc
You are a lab technician and must create 250 ml of a 17% salt solution. You have available three stock solutions. You have a one liter container of a 5% salt, a 500 ml container of a 28% salt solution, and a 400 ml container of a 40% salt solution. Show
asked by Fatih 
Calc
Consider the Dosage Formula y=(S/1.73 where y = childfs dosage, a = the adult dosage, and S = the surface area of the body in square meters. The Surface Area Formula is S(w,h)=0.0101w^(.425)*h^(.725) where S = the surface area of the body in square
asked by Fatih 
physics
A satellite orbits a planet at a distance of 3.80 108 m. Assume that this distance is between the centers of the planet and the satellite and that the mass of the planet is 3.90 1024 kg. Find the period for the moon's motion around the earth. Express the
asked by Blake 
math
John was in charge of buying milk for a class of 32 students. Milk is sold in halfgallon cartons and gallon cartons at the market. The half gallon costs 1.46 and the gallon costs 2.39. John bought all 21 cartons of milk the store had and paid 41.82. How
asked by Jeftro 
Physics helppp
A crate of potatoes of mass 9.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.69 and μk = 0.41. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. magnitude N?
asked by John 
chemistry
. A 13 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.21 M Br. What was the concentration of AlBr3 in the original undiluted solution?
asked by Kate 
PHYSICS
A crate of potatoes of mass 9.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.69 and μk = 0.41. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. magnitude N?
asked by Anonymous 
Living ENvironment
can you give me a picture lock and key diagrams. I need to make my own lock and key diagram. I don't know the difference between synthesis and hydrolosis so can you give me some pictures and label them if they are hydrolosis or synthesis.
asked by Nate 
6th grade science
what would happen if cytokinesis occurred without mitosis???
asked by kate 
Physics 2
A(n) 78Ù resistor and a 68Ù resistor are connected in series across a battery. The voltage across the 78Ù resistor is 25 V. What is the voltage across the 68Ù resistor?
asked by Anne 
American Gov'tplease check
With the exception of _____ and _____, the candidate who wins the majority of the popular vote automatically receives all of the electoral votes. 1.)Virginia, North Carolina 2.)Minnesota, Vermont My answer3.)Maine, Nebraska 4.)Maine, Florida
asked by Nannielee 
physics
What is the wavelength of an Xray photon with energy 6.0 (6000 )? (Hint: 1 = 1.60 1019 joule.)?
asked by zoryana 
statistics
On standard IQ tests, the mean is 120 and the standard deviation is 15. The results are very close to fitting a normal curve. Suppose an IQ test is given to a very large group of people. Find the percent of people whose IQ score is less than 120.
asked by Anonymous 
Math
Given two spinners one with four equal parts labeled 1,1,3,4. And one with six regions labeled 1,2,3,4,5,6. Given one spin on each spinner what is the probability of spinning two numbers with the sum of 7?
asked by Matt 
physics
A harmonic wave is traveling along a rope. The oscillator that generates the wave com pletes 46.0 vibrations in 26.5 s. A given crest of the wave travels 351 cm along the rope in a time period of 12.5 s. What is the wavelength? Answer in units of m
asked by eddie 
physics
A harmonic wave is traveling along a rope. The oscillator that generates the wave com pletes 48.0 vibrations in 25.8 s. A given crest of the wave travels 413 cm along the rope in a time period of 10.5 s. What is the wavelength? Answer in units of m
asked by Joanne 
Math
Write the partial fraction decomposition of the rational expression. (8014x)/(x^3 8x^2 +16x)
asked by Chelsea 
English
So ms. Sue before you say that theme of story be don’t look back or you be destroyed. ms. sue before I start this paragraph, I also need to put 5 quotes in paragraph from story, which u think be best ones to put in there?
asked by Mohammad 
algebra
A black snake lies at the base of an apple tree and a cat is climbing in the tree branches. The number of apples on the tree is four less than twice the tree's height. One year ago the the cat's age was onethird of his mother's current age. Two years from
asked by Oliver 
science
EXPLAIN THE USES OF ELECTROMAGNETS
asked by SREEVENI 
algebra 2
solve this equation by using the quadratic (3x)^212(3x)+27=0
asked by mouse 
physics
This isn't so much a question, but a query: What does this mean? K.E. = 1/2 mv2 I can do the homework on my own if someone lets me know. Thanks.
asked by Elias 
History
What is the gulf war?
asked by Bay 
electric fields
In an electic field described by E=(20i+60j) V/m, calculate the change in potential for a particle that moves from the origin to the coordinate (3,3) m?
asked by anne 
potential
What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulumbs and q2= 5 micro coulumbs?
asked by anne 
Algebra 34
Solve x^2 + 2x  8 = 0
asked by Brianna Esparza 
Math
2x9/3=83x Please help me solve this and show your work thanks
asked by Olivia 
chemistry
Q1) For the reaction, A to B, Delta H= +11.00 kJ mol1 and Keq is 12.50 Calculate i) delta G and ii) delta S at 25 C (degrees celcius) 0 C degrees celcius = 273.15 K; R = 8.314 J K1 mol1] PLease help dr bob222
asked by jenny 
Probability
In a Cc x Cc crossing of peas, 5 offspring are of genotype CC, 12 are of genotype Cc, and 6 are of genotype cc. What is the probability of this event?
asked by Erica 
physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N
asked by Adam 
Physics
You want to push a 66kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N
asked by Anonymous 
algebra
I am not good at math at all and my teacher has given me a very hard question about solving for the indicated variable. p=s+t+u solve for u Help please
asked by Kita 
physics
A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.470, respectively.
asked by cody 
physics
Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 17°. A car can travel around curve A without relying on friction at a speed of 18.5 m/s. At what speed can this car travel around curve B
asked by Blake 
physics
I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars
asked by sara 
introductory physics concept
I know that a capacitor does not allow charge to flow through it because its two conducting plates are separated by a dielectric (insulating material) but then how does a current flow through a circuit? Is it because at a certain DC voltage (almost like a
asked by yoyoma 
math
If 16 points are arranged in a circle, how many lines are needed to join every point at once?
asked by Haley 
Criminal Justice
•Select a city, town, or municipality and examine trends in criminal activity over the last 3 years. Analyze reported crime statistics for major/minor offense categories such as murder, robbery, rape, and create a table of the results. •What are the
asked by Nana 
math
a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.
asked by J 
Chemistry
What must be the molarity of an acetic acid solution if it has the same percent ionization as 0.150M HC3H5O2 propionic acid,Ka=1.3*10^5 )?
asked by Tiana 
help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
red riding hood had good purposes when she rewrote her own fairy tale but she forgot that.........................
asked by Celest 
Physics
You are hiking out in California and come across an abandoned mine shaft. Wondering how deep the mine shaft is you toss a rock in and it takes 5.1 seconds before hitting the bottom. How deep is the mine shaft in meters?
asked by Rachel 
Math
1/2(6x4)=4x9 Please help me solve and work it out thanks
asked by Pattie 
Physics
Why do electric field lines begin on positive charges and end on negative charges?
asked by Ashley 
physics4
A baseball is thrown horizontally from a height of 11.20 m above the ground with a speed of 27.5 m/s. Where is the ball after 0.90 s have elapsed? The ball is 1 a horizontal distance of 2 m from the launch point.
asked by Anonymous 
economics
Before the merger, each of the separate newspapers was losing about 10 million per year. What forecast would you make for the merged firms profits? Explain. b. Before the merger, each newspaper cut advertising rates substantially. What explanation might
asked by cs 
math
make an ordered stemandleaf plot of the data, 16.9,17.8,16.3,16.4,17.8,18.1,15.4,16.8,17.1,18.3,15.5,16.2,17.9
asked by damon 
science
during eatrhs past, some landmasses lay nearner to the polesand become glaciated. explain how this event could have caused global warming?
asked by Mari C. 
American Goverment
In the United States, the emphasis on individual rights helped to shape A. a powerful foreign policy. B. a sense of national identity. C. a strict class system. D. a system of religious intolerance. ?? help Please.
asked by lalt 
algebra
Solve the equation and write down the property you use at each step to simplify the equation. Consider the equation: 4x + 11 = (5x + 34)/2. Be sure to show your work.. Thank You Jiskha..!! :)
asked by Twanisha 
English
What is the subject and verb in the sentence below: The company offered a fifty dollar rebate on every energy efficient refridgerator bought during the month of June.
asked by Jimmy 
Calculus
find all points at the curve x^2y^2+2xy=3 with the slope of the tsngent is 1
asked by Johnathan 
geometry
Rectangles A and B are congruent. The base of rectangle A is 5 inches more than its height. The height of rectangle B is 12 inches. What is the base of rectangle A?
asked by Gab 
math
if 24 apples are needed to make 3 pies, how many apples are needed to make 2 pies
asked by Anonymous 
Algebra
1.How do you factor (5t^2+50t+5) ? I keep getting (5)(t1)(t+1), but when I check it by foiling and multiplying, it doesn't equal the original trinomial. 2. Can I multiply (3x2x+8) by (1) to get rid of the negative coefficient? If I don't, it will be
asked by Betta 
Psychological Statistics
A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues 25 Learning/school issues 15 Relationship issues 5 Other 5 What does it mean to say the files were randomly
asked by Jeff 
American Gov'tplease check
On election day, each voter is assigned to a special election district, also known as a _____. 1.)polling unit My answer2.)precinct 3.)neighborhood poll 4.)election unit
asked by Nannielee 
3rd grade math
write the missing fraction or mixed number for each number line 0,1/3,2/3,1,____,____,____,______,2 1/3 3
asked by Alex 
calculus 2
please find the inverse function
asked by sean 
algebra1
im just checking to make sure i did my problems right before tomorrow i had to simplify 6 sq.root2 devided by sq.root3. I came up with 2 sq.root6 is this done right?
asked by katelynn 
chemistry
what is the vapour pressure in mm of Hg of nickel nitrate solution at 125 degree centigrade
asked by Anonymous 
Advanced Maths (Vectors) AQA Level, please help?
Starting simultaneously from the same spot, O, Alvin and Bernard set out across a field in the gog. Alvin travels with velocity i + 2 j m/s and Bernard with velocity 3i + j m/s, To avoid losing each other, they hold opposite ends of 90 m string. a) At what
asked by Jat 
Spelling
Relive how I put in sentence
asked by Johnny 
english
Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans Make certain that you describe how he dresses how he lives what he believe?
asked by Robert 
Math
Fortyeight decrease by a number is the same as the difference of four times the number and seven. Find the number. Please help me and show your work please and thank you
asked by Sadie 
Math
1/2(6x4)=4x9 Please help me solve this and show your work please and thank you
asked by Haylie 
SCIENCE
I have a homework pqage for kindergarten that says Petal Patterns. Label each pattern. I'm not sure what the teacher is looking for. Can anyone help me?
asked by Jessica 
math
Two numbers have the sun or 100. Bothe numbers are divisble by 4 but not 5. Their quotient is also divisble by 4
asked by Lori 
math
In the figure below, AF is the perpendicularbisector of DN. What is m angleADF?
asked by Anonymous 
physics
What is the freefall acceleration in a location where the period of a 2.03 m long pendulum is 2.86 s s? Answer in units of m/s squared
asked by imel 
Physics 2
A cylindrical copper cable carries a current of 1170 A. There is a potential difference of 1.60 102 V between two points on the cable that are 0.21 m apart. What is the radius of the cable?
asked by Anne 
psy230
A health researcher wanted to know if there was a difference in success rates between three methods of quitting smoking: A, B, and C. She designed a study with 15 participants, 5 in each group, and asked participants to track how many cigarettes they
asked by asia 
logic
if an argument does not commit a fallacy, it is a)necessarily valid b)necessarily sound c)Not enough information to determine d) Both A and B
asked by sherry 
geometry
Determine how many triangles with the following measurements can be formed: ÚA = 67.5‹, a = 43, b = 59.
asked by tori 
biology anyone..
please i need this by tomorrow. if nucleii are 3 micrometres long, how big are the cells? these r 2 questions i not get.
asked by Shreya 
English
Whats the difference between honoring women vs honoring women of. Color
asked by Delaceyoliver 
math
Alexandra has 18 yoyos.She spent $9.00 to buy them all.She wrote the equation 18 divided by 9 = y to find how many yoyos she got for each dollar she spent.Sven has 9 yoyos.He spent $18.00 to buy them all.He wrote the equation 18 divided by 9 = y.What
asked by bebe 
Physics
A driver has 50kg mass, and drives from a high board. On entering the water the driver travels vertically downward and comes to rest in a vertical distance of 5 m. The average resistance force is acting on the driver during the motion to rest in the water
asked by beavis 
maths
express x1/(x+1)(x2)^2 into partial fractions
asked by chrystabelle 
Social Studies
I need to know what percentage of workers in the US were unemployed by 1932. I'm seeing a lot of different answers on the internet. Thanks..
asked by Brandi 
uhd
int carry=0; int prod,i,j,rem; int base=10; else if ( op == '*' ) //checks for operator, performs array multiplication { for(i=size1; i>1;i) { for(int j=size1; j>1;j) { prod =firNum[i]*secNum[j]; prod += carry; if(prod>=base) { carry = (prod/base);
asked by sardar 
Math
Answer the questions based on the information give on the sign 1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River Otter skin=2gold coins 5 silver coins=1gold coin Jim comes into the station with 45 beaver pelts. He would like to get gold
asked by Colton 
Engish
The neighbors' new dog is small, quiet, and shy
asked by Maryann 
Algebra 34
what is 40x^632x^8 factored completely?
asked by Brianna Esparza 
Geometry
Use circle O to find x AB=3x5, CD=2x+1
asked by Anonymous 
math
kyle spent 3 hours each day for 4 days making a song. Write and solve an equation to find the number of total hours Kyle spent making his song
asked by Anonymous 
English
Writeacher, as you are a teacher, I would like to have your personal opinion about what I included below. (I'd like you to check the word choice, too) 1) At school teachers told me that he my sevenyearold child has got a great intelligence and logic
asked by Henry2 
math
2x+3y=3 3y=52x 4xy=3 4x=y=1 solve and explain please
asked by mark 
math
HOW MANY DIFFERENT NINEDIGIT COMBINATIONS ARE POSSIBLE. EXPRESS RESUILT AS A POWER OF 10
asked by WENDY 
American Gov'tplease check
Parliamentary democracies often have _____ representation, which increases the likelihood that minor parties will be represented in the legislature. My answer1.)proportional 2.)direct 3.)simple 4.)indirect
asked by Nannielee 
biology
this part of organism usually found underground, what organele conspicuously absent?
asked by Shreya 
geometry
To find the distance from the house at point D to the house at point E, a surveyor measures ÚDFE, which he finds is 73‹40'. The distance from the house at point D to point F is 15 ft, and the distance from point F to the house at point E is 28 ft.
asked by tori 
TO MS.SUE
THANK YOU SO MUCH! THE PHRASES WERE PERFECT!
asked by Celest 
geometry
In a triangle, find the value of a if ÚA = 75‹15', b = 4, and c = 9.
asked by tori 
Physics Can someone please help thnks
reply to my post earlier julie thnk u please
asked by Julie 
CHEM, please help!
A 11 mL sample of a solution of AlBr3 was diluted with water to 23 mL. A 15 mL sample of the dilute solution was found to contain 0.045 moles of Br. What was the concentration of AlBr3 in the original undiluted solution? answer is 2.09 but i cant get it.
asked by Kate 
biomechanics
a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.
asked by J 
statistics
One group of mothers has played classical music for their babies every day for 6 months while another group of mothers has not. The babies are tested to determine if there is a significant difference in the motor coordination skills of these two groups.
asked by Beverly 
social studies
Did Hoover's actions help put an end to the Depression. From what I'm reading most people say he didn't help but some things say he did do some good so unsure what to put. It is an agree or disagree question.
asked by Brandi 
History
My teacher wants us to do a project on the 90's. In my group, I was assigned to do the styles that the 90's people wore. I am down to kids,like, how they dressed. How did kids in the 90's dress? Please answer.
asked by Mary Anika 
french
Combine the elements with prepositions in french. Nous adions/ nos parents/ faire le menage. is it Nous adions a nos parents a faire le menage? or de faire? thanks
asked by Rebekah 
Physics to drwl please help
A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)
asked by John 
Physics to drwl please help
Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth
asked by sara 
chemistry
design a simple lever that could be raised and lowered smoothly using niitinol wires.
asked by kristin 
chemistry
What would the predicted TSS value of a solution be if I combined one liter of 35 mg/L solution with one liter of 114 mg/L solution? Thanks for the help.
asked by Glen 
science
When girls get pregnant, how do they babies get defected?
asked by Jay 
Math
Find two numbers on the 30board(the factor game) with the greatest product.
asked by Megan 
Math
It usually takes 55 minutes to get from Lakewood to Oakdale. This morning the train is 10 minutes early. How many minutes did the trip take?
asked by Evie 
geometry
How tall is a tower if it casts a shadow 65 ft long at the same time that a building 160 ft tall casts a shadow 130 ft long?
asked by drew 
Health
how do lipids move through the body so they can be digested and absorbed? How are lipids stored in the body? Explain your answer.
asked by Evangeline 
math
5 friend are buying tickets.HOW MANY COULD THEY LINE UP.
asked by vannyboo<3 
calculus 2
please find the deriative
asked by sean 
math
One number is 25% of another. The larger number is 12 more than the smaller. What are the numbers?
asked by Janet 
MATH HELP PLZ
A physician orders 750mg of chloramphenicol to be added to a 100ml bag of NS. If the drup is reconstituted to 1gm/10ml, how many mills will be added to NS?
asked by Vicki 
Math
4t+14=6t/5+7 Please help me work out this problem and show your work
asked by Patty 
Math
I need help setting up this equation. The Volume, V, of a given mass varies directly as the temperature, T,and inversely as the pressure, P.
asked by Chelsea 
Math
Y/3+11=y/23 Please help me solve this and show your work thanks
asked by Makayla 
english
what should be taken into consideration when cultural bias occurs
asked by nicole 
Math
The least upper bound of a set of real numbers in (0,1) whose decimal expansions do not contain the digit 9 is k/9. What is the value of k? thanks!
asked by Anonymous 
math
I have to make a line segment that is 5000mm long I have no idea how long Can u help me?
asked by Sam 
SCIENCE
WHAT IS SOLENOID
asked by SREEVENI 
Math
Answer the questions based on the information give on the sign 1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River Otter skin=2gold coins 5 silver coins=1gold coin Pathfinder Polly steps in to trade egss for buffalo skins. She would like to
asked by Colton 
physical Science
When a light bulb is rated at 60 W ft what do this mean?
asked by ashley 
Math
Convert 35 to a base number. Use this base five number & count in base five through next fifteen numbers.
asked by Heather P. 
math
If the height of a cylinder is made nine times longer, how many times the volume of the original figure is the volume of the new figure?
asked by charlie 
science
According to Peter Saundry, there is no true universal code of ethics because standards ods conduct vary from place to place and time to time. True or False
asked by Peggy 
English
What part of speech is... You'll never corner him! (corner)
asked by Anonymous 
English
Which of the following is punctuated correctly? Choices are: A. The new shoe store is located at 11347 Arthur Drive, Baltimore, Maryland 21201. B. The new shoe store is located at 11347 Arthur Drive, Baltimore, Maryland, 21201. C. The new shoe store is
asked by Samantha 
history
what did jefferson davis believe congress and the government should do about slavery?
asked by maria 
Math
200=5x(100+2x)
asked by Aaliyah 
science
why does arizona have monsoon season?
asked by Mari C. 
math
Find 110% 0f 24
asked by Heather 
algebra
y=1/4x1 1/2y=x2 This is systems of Equations please work out the problem and explain it
asked by Anonymous 
chemistry
When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F are in the new solution
asked by Becca 
algebra
Find A ∪ B. (Enter your answers as a commaseparated list.) A = {2, 4}, B = {0, 1, 2, 3, 4, 5}
asked by Jay 
math
if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? Thank you anyone who helps :D
asked by Leda 
mineralogy (geology related)
what is meaning of the golf and shiller texture in mineral or rocks. thank you.
asked by hossein 
8th grade math
y=1/4x1 1/2y=x2 2x+3y=3 3y=52x 4xy=3 4x=y=1 I don't understand this can someone please help me! This is Systems of Equations please work out the problem and explain it how to do it.
asked by Austin 
algebra please ck.
joe wants to spend 70. dollars at most and has 60 cu inches of space left in his soldier's care package. candy costs $7 and takes up 3 cu inch of space phone cards cost $5. and take up 15 cu in. of space. Is this correct? if not please change it or tell me
asked by ann 
geometry
why do the parallelogram and the rectangle have the same formula? b*h
asked by Anonymous 
math
how do you use the distribute property to find each product mentally for 12x44
asked by Anonymous 
Algebra
3/16=h/2 what is the value of H
asked by Christian 
math
how to figure out 2x+b=1650
asked by danae 
math
solve and check each of the following quadratic equation (1)x^2+16x=36 (2)x^2=10x16 (3)3x=x^24
asked by tanya 
spelling
which of the following word groups are punctuated correctly? It rained everyday of our vacation nevertheless, we had a wonderful time. It rained everyday of our vacation, nevertheless; we had a wonderful time. It rained everyday of our vacation;
asked by Anonymous 
POEM
what are 4 phrases for a rabbit
asked by Celest 
geometry
(3x8)+(2y1790
asked by jayquana 
math
4xy=3 4x+y=1 show work and explain
asked by mary 
health
The pancreas produces _ _ _ _ _ _ _ _ It also produces _ _ _ _ _ _ _ Please help thank you
asked by saranghae12 
calculus 2
find the ivverse function f(x)= x^313
asked by sean 
calculus 2
find the derivative y=e^8x5
asked by sean 
Calculus
y=tan(xy)
asked by Jovante 
algebra1
there are 2 more i needed help with/checked. i had to simplify sq.root96 devided by sq.root8, the answer i came up with was sq.root2/4. the second problem is i had to find the sq.root of the fraction 64/100, I chose sq.root8/sq.root10 and sq.root4/sq.root5
asked by katelynn 
science
how are the soles of your feet heated if you stand barerfooton a sunwarmed sidewalk?
asked by Mari C. 
science
changes in the positions of the continents may affect global climates by affecting...? finish the sentence. thx
asked by Mari C. 
math
if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? HELP ASAP!! THANK YOU TO WHOEVER HELPS!!
asked by Savannah 
chemistry
When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F are in the new solution
asked by Becca 
science
how does running water contribute to weathering, erosion, and deposion?
asked by lexi 
english 3
“Redskin” was originally a term for
asked by Mike Johnson 
Math
one postive number is 9 more than twice a number if product is 893 find the numbers
asked by Stacey 
physics
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asked by Anonymous 
math
A diver rested at 340 feet. Then she started descending, and 20 minutes later she was at 420 feet. How many feet per minute did she move?
asked by Chiquita 
math
why do the parallelogram and the rectangle have the same formula? b*h
asked by samantha 
calculus 2
find the indefinite integral showing all work. x^3(x^411)6dx
asked by sean 
english
how can you resolve cultural bias of staff members in the work place
asked by nicole 
commace
from a pack of 52 cards two cards are drawn without replagement.find out the probability that first is of heart and secod is ace?
asked by santosh 
science
the climate of arizona is always warm because?
asked by Mari C. 
health
what should be taken into consideration when cultural bias occurs in age care
asked by sarah 
math
solve for x: 3x^2+6x3=0
asked by help 
math
shape has 4 side: at least one angle measure90 is it a.righ triangle .b.right trapezod c.right triangle b.rhombus
asked by vannyboo<3 
trig
how to graph y = 1/2 cos 2x for 0 ≤ x ≤ 2 p
asked by tori 
math
what is 1/4 plus 1/2
asked by Anonymous