Questions Asked on
September 30, 2012

Physics
A mass m1 = 3.3 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.4 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.87 m. 1) How much work is done
asked by David 
Algebra
Which sets of ordered pairs represent functions from A to B? (Select all that apply), and Explain how you've gotten your answer? A = {a, b, c} B = {8, 9, 10, 11}
asked by Kristi 
Physics
particle A moves along the line y = 30m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with 0 initial speed and constant acceleration of magnitude 0.50
asked by James 
Precalc
# 1 a special window has the shape o a rectangle surmounted by an eqilatera tiangle. ifthe perimeter o the winow is 16 ft, what dimensions will admit te most light (area of triangle= suarre root of 3/4 times x2.
asked by rebekah 
Maths
Lower quartile=39, Upper quartile=63. Measurements of wind speed on a certain island were taken over a period of one year. A boxandwhisker plot of the data obtained is displayed above, and the values of the quartiles are as shown. It is suggested that
asked by Pipipapoo 
Physics
A 4 kg block slides down a rough inclined plane inclined at 30° with the horizontal. Determine the coefficient of kinetic friction between the block and the surface if the block has an acceleration of 1.2 m/s2.
asked by La La 
physics
a projectile is launched at a velocity of 125m/s at an angle of 20 degrees. A building is 200m away. At what height above the ground will the projectile strike the building?
asked by anoymunus 
chemistry
The metabolic oxidation of glucose, C6H12O6, in our bodies produces CO2, which is expelled from our lungs as a gas. C6H12O6(aq) + 6 O2(g) → 6 CO2(g) + 6 H2O(l) Calculate the volume of dry CO2 produced at body temperature (37°C) and 0.980 atm when 25.5 g
asked by jake 
Maths
The ratio of the volume of water in Jug A to the volume of water in Jug B is 2:5. A.) If half of the water in Jug A is poured into Jug B, what is the new ratio of the volumes of water in Jug A to Jug B? B.) If half of the water in Jug B is poured into Jug
asked by Zayn 
Accounting
If a company erroneously records a $500 deposit as $50 in its records, which of the following must occur when reconciling its bank statement? a. The company must increase the balance per its records by $500. b. The company must decrease the balance per its
asked by Anton 
Algebra1
A special snack mix uses raisins, peanuts, and chocolate candies in the ratio 1:2:5 , respectively. In a snack mix of 112 ounces, how many ounces of peanuts are used? I got 28 ounces of peanut.
asked by Anonymous 
STATS
The following confidence interval is obtained for a population proportion, p:0.556 < p < 0.584. What is the point estimate, p?
asked by 1234 
Calculus
Given that f is a differentiable function with f(2,5) = 6, fx(2,5) = 1, and fy(2,5) = 1, use a linear approximation to estimate f(2.2,4.9). The answer is supposed to be 6.3. Here's what I've done so far: L(x,y) = f(2,5) + fx(2,5)(x) + fy(2,5)(y) L(x,y) =
asked by James 
HEALTH
1. Which of the following statements about defensive medicine is true? A. Insurance companies encourage it. B. It's the result of fewer malpractice claims. C. It can mean excessive medical tests. D. It's motivated by the needs of the patient 2. The jury
asked by Marcelo 
Physics
A sandbag is dropped from the helicopter 125 m above the ground. What is its velocity at a height 60.0 m and when it hits the ground?
asked by Sheila 
Psychology
In Maslow's needs hierarchy, people whose need for _______ has been fulfilled are poised to ascend to the level of selfactualization. A. safety B. love and belongingness C. esteem D. achievement My answer is D am I correct?
asked by dandrah 
English
An epic tale can also be defined as _______. (my answer)A.a long narrative poem B.a historical chronicle in verse C.a dramatic retelling of a country's history I went back through the text we read and my notes from the lesson and "epic tale" was never
asked by Anonymous 
physics
Two forces, F1 and F2 act on the 7.00kg block shown in the drawing. The magnitudes of the forces are F1=59.0 N and F2=33.0N. What is the horizontal acceleration (magnitude and direction) of the block? F1 makes a 70 degree angle with the horizon.
asked by a person 
Psychology
Which statement about anorexia nervosa is true? A. Anorexics almost never starve to death, although they may die from other disorders. B. Sufferers are usually males between the ages of 12 and 40. C. People with this disorder may well be attractive and
asked by dandrah 
math
The present value of the money in your savings account is $420, andyou're receiving 3% annual interest compounded monthly. what is the future value in two months? a.$432.60 b. $426 c. $422.10 d. $424.11 You've just received anorder of silk flower
asked by Marcelo 
physics
You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of 60.0 units. What are the two possibilities for its x component?
asked by joe 
physics
A rocket is launched with a speed of 282 m/s at an angle of 41.2 degrees above the horizontal. How far does the rocket travel before it hits the ground?
asked by Anonymous 
PHYSICS
A bare helium nucleus has two positive charges and a mass of 6.64 1027 kg. (a) Calculate its kinetic energy in joules at 2.00% of the speed of light. J (b) What is this in electron volts? eV (c) What voltage would be needed to obtain this energy? V
asked by Kg 
Chemistry
A 45kg sample of water absorbs 345 kJ of heat. If the water was initially at 22.1 degrees celcius, what was the final temperature?
asked by Anonymous 
math
A salesperson has two job offers. Company A offers a weekly salary of $150 plus commission of 6% of sales. Company B offers a weekly salary of $300 plus commission of 3% of sales. What is the amount of sales above which Company A's offer is the better of
asked by Anonymous 
Mathematics
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?
asked by Sophie 
Math
You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.
asked by Alisha 
Psychology
If you support the idea that physiological arousal and the experience of an associated emotion will occur simultaneously, you'll agree with the A. biological emotionactivation theory. B. JamesLange theory of emotion. C. CannonBard theory of emotion. D.
asked by dandrah 
Physics
A delivery truck travels 19 blocks north, 14 blocks west and 15 blocks south. What is its final displacement from the origin? whats the degrees???
asked by john 
Maths
The ratio of the amount of money Karen had to the amount of money Peter had was 2:5. Peter received $75 from his mother, the ratio became 4:15. How much money did each person have at first?
asked by Zayn 
Chemistry
I'm having a hard time understanding Endothermic and Exothermic reactions, like their standard format and stuff. For Exothermic reactions the heat is getting released into the surroundings, the products will be less than the reactants, so I would assume
asked by Shreya 
physics
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.22 m from the spot, while charge B is 0.54 m from it. Find the ratio qB/qA of the charges. Help!
asked by anthony 
English
Thomas Jefferson and Thomas Paine shared a similar purpose for writing. What was their purpose?
asked by Cece 
Chemistry
A bicycle tire is filled with air to a pressure of 610 kPa at a temperature of 19 oC. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 oC. The volume of the tire increases by 4.0%. What is the new pressure in the bicycle
asked by Helga 
Math
Chelsea had made six of seventeen freethrow attempts. How many consecutive free throws must she make to raise her percentage of free throws made to exactly 50 percent?
asked by Tammy 
critical t hinking
Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats shows that not
asked by renee 
Physics
A tire placed on a balancing machine in a service station starts from rest and turns through 4.71 revolutions in 1.29 s before reaching its final angular speed. Calculate its angular acceleration.
asked by Arthur 
Predicate and subjects
1. The smell of cooking is delicious to the hungry camper. 2. A good fire is difficult to build. looking for simple subject and predicate 1, smell. Predicate. Camper subject 2. Fire subject. Build predicate
asked by Maddy 
Chemistry
3. Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4.2 for this calculation.
asked by Sdon 
Production & Operations Mgmt in Business
If someone could help me, I am truly desperate here. I am struggle with this problem. – Simple Linear Regression Applications Interpretation and Use of Computer Output (Results) (1) The management of an international hotel chain is in the process of
asked by Jack 
Psychology
In Piaget's model of cognitive development, a child's tendency to view the world entirely from his or her own perspective is referred to as A. the sensorimotor stage. B. the concrete operational stage. C. egocentric thought. D. metacognition. My answer is
asked by dandrah 
Chemistry
When H2 gas is collected over water, why is there water vapour in it? How does water vapour get into the hydrogen gas collected?
asked by Mia 
Maths
Tina and Gopal had some stickers in the ratio 2:3. Gopal gave half of his stickers away and the ratio became 4:3. If Gopal had given away 21 stickers, how many stickers did each person have at first?
asked by Zayn 
Maths
There were 3 glasses containing the same volume of liquid. Mr Lee poured 210 ml of the liquid from Glass A into Glass C, and 150 ml of the liquid from Glass B into Glass C. In the end, the ratio of the volume of liquid in Glass A to the volume of liquid in
asked by Zayn 
physics
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, a second snowball is thrown at a low angle timed to arrive before or at the same time as the first one. Assume both
asked by tingting 
math
A side of regular polygon is 3.5 cm in length.the perimeter of the polygon is 17.5 cm. How many sides does the polygon have?
asked by nimshi 
physics
The three vectors in the figure below have magnitudes a = 2.45 m, b = 3.15 m, and c = 15.0 m and angle θ = 36.5° find x component of vector a
asked by casey 
PHYSYICS
Vector V1 is 6.29 units long and points along the negative x axis. Vector V2 is 4.23 units long and points at +35.0° to the +x axis. (a) what is V1x & V1y (b) what is the magnitude & direction (degrees)
asked by please help! part 2 
Chemistry
Imagine that you needed to choose an indicator for the titration of a strong base (like NaOH) with a strong acid (like HNO3). You have the indicators in Table 1 available. Which indicator would you choose? Why? Indicator [HIn] [ In] pKa Maryland Red Red
asked by Cris 
Math
Write a number that has a hundreds digit less than 7, a tens digit less than 5, a tenths digit one more than its tens digit, a thousandths digit twice the tens digit, and other digits of your choice.
asked by Penny 
calc
A window consists of a rectangular part of height h surmounted by a semicircle of radius r. The perimeter of the window is held constant at 10 feet, but h and r are allowed to vary. Find an expression for the rate of change of h with respect to r.
asked by jump 
precalc
f(x)=2+4xx^2 when x is less than 2 thus f1(x)=2sqrt(x+6) i need to show that f(f1(x))=x, but i keep getting negative x...any help
asked by ANON 
chemistry
what type of bond would carbon, sodium, and neon form?
asked by mandy 
Math
While preparing the February 28th bank reconciliation for the checking account for Willow, Inc., the accountant identified the following items: Willow's balance according to the general ledger $46,200 Outstanding checks $1,100 Interest earned on the
asked by Anton 
Science
What happens when 1 Liter of Carbon Tetrachloride is poured into a container of Water?
asked by Joanna 
Gr. 12 Physics
A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air. I found the
asked by Myles 
Economics
Here goes... 1. Consider a model in which an individual lives two periods: this period (time one) and next period (time two). This period his budget constraint requires that his consumption, c1; plus his saving, s; equals his income, y1: c1 + s = y1: Next
asked by Wesley 
english
Edit the following sentences to correct misplaced or awkwardly placed modifiers. Revisions of lettered sentences appear in the back of the book. The flood nearly displaced half of the city’s residents, who packed into several overcrowded shelters.
asked by Anonymous 
Biochem
1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10
asked by Liv 
physics
a toy car runs off the edge of a table that is 1.225 m high. if the car lands .400 m from the base of the table (A) how long does it take for the car to fall and (B) what is the horizontal velocity of the car?
asked by Bob 
7/8 Math
8  3x = 128 what is the value of x?
asked by Christabelle 
physics
A dentist's drill starts from rest. After 3.62 s of constant angular acceleration it turns at a rate of 2.70E+4 revolutions per minute. Find the drill's angular acceleration. Determine the angle through which the drill rotates during this period.
asked by Arthur 
Physics
A 0.300 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.215 kg puck that is initially moving along the x axis with a velocity of 2.14 m/s. After the collision, the 0.215 kg puck has a speed of 1.14 m/s at an angle of q =
asked by Arthur 
Physics
You are standing at the top of a deep, vertical cave and want to determine the depth of the cave. Unfortunately, all you have is a rock and a stopwatch. You drop the rock into the cave and measure the time that passes until you hear the rock hitting the
asked by Arya 
7/8 Math URGENT!!!
8  3x = 128 Subtract 8 from both sides. 3x = 120 x = 120/3 x = 40 Can someone explain this to me?? I don't understand why you would subtract 8 and not add 8... also, why did the 3 suddenly become a negative? HELP ;D
asked by Christabelle 
Algebra
An investor invested a total of $1400 in two mutual funds. One fund earned a 6% profit while the other earned a 2% profit. If the investor's total profit was $72, how much was invested in each mutual fund?
asked by BriAnne 
English/ History
In History, we are reading the book _My Brother Sam is Dead_ and one of the questions asked: What did Sam's being home reveal about discipline among the Rebel troops? Please help me understand what the question means, thanks!
asked by Lily 
Physics
A sip is heading due west at a steady speed of 15km/hr. A current of 3km/hr is running due south. Calculate the velocity of the ship relative to the seabed.
asked by Dominique 
7/8 Math
20  K/15 = 17 What is the value of k?
asked by Christabelle 
Physics explain why 2
A small guy moving at a high speed collides with a stationary large football player. Now, which person experiences the larger force during the collision? how and why?
asked by Herosugar 
Physics
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.39 rad/s^2. It accelerates for 30.3 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 69.1 s after
asked by Arthur 
chemistry
How to balance simple oxidationreduction reactions by the halfreaction method. Mg (s) + N2 (g)= Mg3N2 (s)
asked by ron 
Physics
Block A has a mass of 2.60 kg and rests on a smooth (frictionless) table and is connected to block B, which has a mass of 2.40 kg, after passing over an ideal pulley, as shown. Block B is released from rest. What is the acceleration of the masses?
asked by Anthony 
Algebra
(36)/(2) =
asked by Melinda 
chemistry
A sample of the male sex hormone testosterone, C19H28O2, contains 4.09 1021 hydrogen atoms What is the mass of this sample in grams? i got 0.0697g but its wrong
asked by rebekah 
precalculus
solve for the follow inequality. write your solution in interval notation. x^349x¡Ü0
asked by ladybug 
chemistry
a 250.0 ml sample of an aqueous solution at 25 degrees celsius contains 35.8 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 11.25 mmHg, what is the molar mass of the unknown compound? I know you need to have the answer
asked by Vic 
Grammar
Do I use to or for? The company was a great success (to, for) Florida.
asked by Anonymous 
Computers
Daily Life Magazine wants an analysis of the demographic characteristics of its readers. The Marketing Department has collected reader survey records containing the age, gender, marital status, and annual income of readers. Design an application that
asked by Liz 
Chemistry
In four of the following groups, the three substances are either all strong electrolytes, all weak electrolytes, or all nonelectrolytes. Which group has one member which is NOT like the others in the group? 1. BaCl2; NaNO3; HF 2. O2; CO(NH2)2; CH3OH 3.
asked by Kayla 
Physics
Two packing crates of masses m1 = 10.0 kg and m2 = 4.10 kg are connected by a light string that passes over a frictionless pulley as in the figure. The 4.10kg crate lies on a smooth incline of angle 33.0°. (a) Find the acceleration of the 4.10kg crate.
asked by Cora 
Chemistry
In the redox conversion of CO to CO2− 3 , the oxidation number of C goes from (−2, 0, +2) to (−4, −2, +4, +6). Recall that the oxidation number of oxygen is typically −2. 1. +2; +6 2. −2; −4 3. 0; −2 4. 0; +6 5. −2; +6 6. +2; +4
asked by Kayla 
Sociology
Did I answer this question correctly? wi If all of a company’s Filipino employees sit together for lunch, sociologists would say they have formed their own _________. (c) ingroup A). diversified group B). outgroup C). ingroup ( I chose this one, ingroup
asked by Sharon 
Physics (Mechanics)
A 10kg crate on a ramp is inclined at 30 degrees from the horizontal and released. The coefficients of friction between them are .48 (coefficient of static friction) and .28 (coefficient of kinetic friction). a) Does the block slide? b) What then is the
asked by Anonymous 
bridge to terabitha
Hello i read the book bridge to terabitha and i have an assignment i need some help on. i need to pick 5 characters and describe six events or circumstances that caused the character to change or evolve. i have picked the characters Jesse Oliver Aarons
asked by sara 
MATH
DIVIDE 64 BUNDLES OF NEWSPAPERS INTO TWO GROUPS SO THE RATIO IS 3 TO 5
asked by MARY 
chemistry
How much energy is required to vaporize 75.5 mL of ethanol (C2H5OH, d=0.789 g/cm^3) at its boiling point, if its heat of vaporization is 40.5 kJ/mol?
asked by Brunette 
Physics
Hello! I live in Mexico, and I have a couple of questions I asked on Y answers, both English and Spanish, and have gotten no reply, and I need to turn this in for my bimonthly exam in physics this Monday. I need to calculate the volume and surface area of
asked by Gabby 
Geometry
If a regular pentagon has sides of four feet, what is the length from the vertex to the midpoint of the opposite side
asked by Lee 
MATH
Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.
asked by cody 
earth science
How do astronomers use satellites?
asked by Lisa 
chemistry
a substance has a vapor pressure of 35.0 mmHg at 52.0 degrees Celsius and 70.0 mm Hg at 77.0 degrees Celsius. What is the heat of vaporization for this substance?
asked by Bru 
College Physic
can someone help me with this question? Thank you! You have taken a summer job at a warehouse and have designed a method to help get heavy packages up a 15º ramp. In your system a package is attached to a rope, which runs parallel to the ramp and over a
asked by Monet Nguyen 
physics
A delivery truck travels 19 blocks north, 14 blocks west and 15 blocks south. What is its final displacement from the origin?
asked by mike 
Geometry
Find the measure of each angle in a triangle with angles: x, (x135), and 1/10 x
asked by Amanda 
Ethics
Write a 400 to 600 word personal reaction paper using the same ethical theory. This paper must include at least two references and address the following: · The essential points of the theory as you understand them · How this theory intersects with your
asked by stacey 
Chemistry
I'm looking for the moles, using the given amount of atoms. i was given 3.01 x 10^23 atoms of Ag the answer I got was 18.1 x 10^23 is this correct?
asked by John 
Physics
A mass of m1 = 6.00 kg is sitting on an inclined plane, which meets the horizantal at an angle of 22.0, which has a coefficient of sliding friction of 0.290, which is 3.50 m = L. a string is attached to m1, it is strung over a pulley, and attached to mass
asked by Adrian 
social studies
where is urals mountains on the map.
asked by st 
Math
Assume that each female rabbit of a colony gives birth to three female rabbits. How many female rabbits of the tenth generation will be descendants of a singal rabbit of the first generation?
asked by Casey 
Math
A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b
asked by carly 
physics
A superhero ﬂies 310 m from the top of a tall building at an angle of 30 ◦ below the horizontal. What is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer. Answer in units of m Your
asked by Anonymous 
Science
Radium has a halflife of 1620 years and decays into radon, which has a halflife of 3.82 days. A 10gm source of radium is sealed, and the radon produced is pumped off every 24 hours. How many mill curies of radon are pumped off each time?
asked by Nivia 
Science
Natural Uranium contains 15 percent Sm147. Sm147 is radioactive and decays by alpha decay. What will be the number of disintegrations per gram per second of the natural element? The halflife of Sm147 is 1.3x1010 years.
asked by Nivia 
Math
The base of an isosceles triangle is one inch shorter than the equal sides, and the altitude of the triangle is two inches shorter than the equal sides. What is the length of the equal sides?
asked by Becky 
STATISTICS
The height of PU men are normally distributed with mean 65 in. and standard deviation 5.3 in. find the probability of finding: a. A men selected is at least 75 in. tall? b. A man selected is no less than 58 in. tall?
asked by JOE 
bussiness low
How and why fraud invalidates a contract This subject example of undue influence and duress that can arise in the business context
asked by german 
Math
2≤(x+1)/(x+3)
asked by inequality absolute value of rational numbers 
physics
Vector V1 is 6.29 units long and points along the negative x axis. Vector V2 is 4.23 units long and points at +35.0° to the +x axis. (a) What are the x and y components of each vector? V1x = V1y = V2x = V2y = (b) Determine the sum V1 + V2. Magnitude
asked by michael 
Arithmetic Sequence
Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.
asked by Nina 
Physics
A picture hangs on the wall suspended by two strings, as shown in the figure, with θ = 59°. The tension in string 1 is 1.9 N.
asked by Hey 
Finance
1.You buy a SML Bond for $980. The bond has a face value of $1000 and an annual coupon rate of 8%. There are 5 years left until maturity. Because of a special delivery by the stork, you decide to sell the bond at the end of year 2 for $1050. What was your
asked by nick 
physics
Three similar ideal cells (no internal resistances) supply current of 0.5 Ampere to a 10 Ohms resistor when they are in the parallel.How much current will they supply to the same risistor when they are connected in series aiding?
asked by nitz 
Finance
1.BAC is considering an issue of preferred stock. The dividends are 8.12% of the $25 par value. a.If the current price is $26.25 per share, what is the return on the preferred stock? b.Suppose the preferred stock will mature in 20 years. If the price is
asked by nick 
physics
Three vectors are shown in Fig. 332 (A = 62.0 , B = 58.0°). Their magnitudes are given in arbitrary units. Determine the sum of the three vectors. (a) Give the resultant in terms of components. Rx = Ry = (b) What is the magnitude of the resultant? What
asked by michael 
music
plz tell me the keyboard notes for playing the song saare jha han se accha
asked by nanbala 
accountancy
You have been living in the house you bought 10 years ago for $500,000. At that time, you took out a loan for 80% of the house at a fixed rate 30year loan at an annual stated rate of 6%. You have just paid off the 120th monthly payment. Interest rates
asked by rebecca potts 
physics
A car is driven 105 km west and then 65 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
asked by joe 
physics
1.) Draw a set of 1.5volt cells in a series circuit so that the total battery voltage is 9 volts. A.) how many cell does it take? B.) show polarity connection. C.) suppose you connected one of the cells in part (a) so that it was backwards. what would the
asked by nitz 
physics
A delivery truck travels 15 blocks north, 21 blocks east and 18 blocks south. What is its final displacement from the origin? Assume the blocks are equal length. magnitude and direction
asked by joe 
Maths
Sam used cement and sand to prepare a mixture. The ratio of the number of pails of cement used to the number of pails of sand used was 1:2. Sam then added 8 more pails of cement and the ratio became 5:2. A.) How many pails of cement was used at first? B.)
asked by Zayn 
physics
Vector V1 is 8.98 units long and points along the negative x axis. Vector V2 is 4.00 units long and points at +50.0° to the +x axis. a) What are the x and y components of each vector? (b) Determine the sum V1 + V2.
asked by joe 
physics
You are given a vector in the xy plane that has a magnitude of 90.0 units and a y component of 40.0 units. What are the two possibilities for its x component?
asked by michael 
Maths
The ratio of the number of coins Azam had to the number of coins Eddie had was 3:7. Eddie gave 42 coins to Azam and they ended up having the same number of coins. How many coins did each person have at first?
asked by Zayn 
math
divide33 photos into two groups so the ratio is 4 to 7?
asked by gwen 
physics
An airplane is traveling 675 km/h in a direction 42.5° west of north (a) Find the components of the velocity vector in the northerly and westerly directions. b) How far north and how far west has the plane traveled after 3.00 h?
asked by joe 
physics
Three vectors are shown in Fig. 332 (A = 60.0 , B = 56.0°). Their magnitudes are given in arbitrary units. Determine the sum of the three vectors. (a) Give the resultant in terms of components. (b) What is the magnitude of the resultant? What is the
asked by joe 
Philosophy
How might Hobbes argue that from the time of reformation (1517), with decline in the power of the pope, to WW1 no sufficient structure existed to support the Just War Theory?
asked by James 
Maths
(i)51 (ii)17.8
asked by Pipipapoo 
chemistry
for these chemicals write complete balanced equations for all possible reactions that would lead to an insoluble salt KCL BaCl2 AgNO3 Pb(NO3)2 K2SO4 HNO3
asked by Anonymous 
physics
A 44.8 child is standing on the outer edge of a merrygoround that has moment of inertia 981 and radius 2.40 . The entire system is initially rotating at 0.180 . Find the angular velocity if the child moves to a final position 1.10 from the center of the
asked by Anonymous 
PreAlgebra(7th Grade)
I don't know how to do area on a shape if it has missing numbers.. .also i need help on division with decimals...
asked by Abby 
Mathematics
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?
asked by Henry 
Physics
A boat, having an initial velocity of 6.6m/s east undergoes an average acceleration of 2.2 m/s squared south for 2.5 s. Determine final velocity after the time interval (magnitute and direction)
asked by Laura 
Physics
A projectile motion thrown with velocity of 200m/s direction of 53 degree above the horizontal?determine height,range,total time,time at particle reach maximum height?
asked by Anonymous 
IT/210
objectoriented design
asked by Anonymous 
Trigonometry
a satellite camera takes a rectangularshaped picture. the smallest region that can be photographed is a 4km by 6km rectangle. as the camera zooms out, the length 1 and the width w of the rectangle increase at a rate of 3km/second. how long does it take
asked by YAZ 
statistics
for a sample of 3 to have a mean of 115 would this be unusual
asked by lillie 
Trigonometry
a satellite camera takes a rectangularshaped picture. the smallest region that can be photographed is a 4km by 6km rectangle. as the camera zooms out, the length 1 and the width w of the rectangle increase at a rate of 3km/second. how long does it take
asked by YAZ 
History California
what was the importance of sebastian Vizcaino in 1602
asked by tae 
Statistics
he life expectancy of a lung cancer patient treated with a new drug is normally distributed with a mean of 4 years and a standard deviation of 10 months
asked by Ty 
test
is there a website for the questions "Sees Behind Trees"
asked by Celest 
french
write 3 rules for the classroom ( they can be silly) Translate them to english.
asked by anonymous 
Physics
A 2050 kg car rounds a circular turn of radius 18.5 m. If the road is flat and the coefficient of friction between tires and road is 0.680, how fast can the car go without skidding?
asked by Arthur 
maths trigo
prove that sin(n+1)Asin(n1)A/cos(n+1)A+2cos(nA)+cos(n1)A=tanA/2
asked by ankita 
PreCalc
f(x)=(24x3+68x2+24x−32)/(4x3+56x2+236x+280) I need help finding the roots and the hole for this problem.
asked by Richard 
UMD
A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution?
asked by Janice 
PHYSICS
Vector V1 is 6.29 units long and points along the negative x axis. Vector V2 is 4.23 units long and points at +35.0° to the +x axis. (a) What are the x and y components of each vector? (b) Determine the sum V1 + V2.
asked by please help! 
Quantum Physics
An electron drop to what energy level is likely to emit a photon in the infrared region?
asked by James 
physics
A steel ball is dropped onto a hard floor from a height of 2.15 m and rebounds to a height of 2.09 m. (Assume that the positive direction is upward.) (a) Calculate its velocity just before it strikes the floor. 6.49 m/s (b) Calculate its velocity just
asked by carlton 
physics
What is the component of a vector (in the plane) whose magnitude is 86.4 and whose component is 62.5?
asked by Anonymous 
physics
1.) Draw a set of 1.5volt cells in a series circuit so that the total battery voltage is 9 volts. A.) how many cell does it take? B.) show polarity connection. C.) suppose you connected one of the cells in part (a) so that it was backwards. what would the
asked by nitz 
physics
Three similar ideal cells (no internal resistances) supply current of 0.5 Ampere to a 10 Ohms resistor when they are in the parallel.How much current will they supply to the same risistor when they are connected in series aiding?
asked by nitz 
programming
Create an application in C# that will accept sales information and calculate the total bill. There are 3 products which can be sold: Product 1 with price of $2.98 Product 2 with price of $4.50 Product 3 with price of $9.75 The application should prompt the
asked by Todd 
statistics
State the null and alternative hypothesis for the following: 1.) A small local bank wants to check if the average daily balance is not higer than 3500 for its individual saving account. Ho: Ha: 2.) A researcher wants to find out if the mean weekly wage of
asked by nitz 
eath science
is moon a source of earth's energy?
asked by Jacob 
Physics URGENT!!!
Two packing crates of masses 7.93 kg and 5.13 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 5.13 kg crate lies on a smooth incline of angle 40.0°. a) Find the acceleration of the 5.13 kg crate (b)
asked by Anonymous 
science
where can carbon and nitrogen be found? i need 5 different areas of both (1 plant and 1 animal)
asked by sammie doodles :) 
Physics URGENT!!!
Two boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figures below, where m1 = 15 kg and m2 = 17 kg. A force of 58 N is applied to the 17 kg box. (a1) Determine the acceleration of the boxes (b) the tension of
asked by Anonymous 
English
I am writing an evidence paragraph telling what people do to their bodies in order to look good. Makeup, braces, surgery , etc are examples but they are not really "technology". This is what I have so far: Today we have upgraded technology ... Is there
asked by Emma 
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time
asked by help me out it's urgent 
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time
asked by help me out it's urgent 
Physics
a) What is the total force of friction on a wagon’s wheels if it takes 30 N to move it at a constant speed across a bumpy path? b) Where on a bicycle do you want to reduce friction? How is this done? c What is meant by the coefficient of kinetic
asked by Hanu30/09 
Algebra,Geometry
If 5x3y4=4x2y12 find x and y. I really just want to know HOW you would find it.
asked by KaDijah 
chemistry
Water from a city well is analyzed and found to contain 25 mg/L of (HCO3)^ and 35 mg/L of (CO3)2^. Calculate the alkalinity of the water as CaCO3.
asked by Lucia 
ALGEBRA WRITE EQUATION
FOOD: each variety of apples cost $1.20/lb at a grocery store. you buy 4lbs of cortland apples and some gala apples for eating. the total cost is $7.20. how many lbs of gala apples did you buy? i think i got the answer but not sure how to write it in
asked by marko 
Physics
A ball is thrown vertically upward with a speed of 48.5m/s. What is the ball's velocity after 1.50s? ** B). what is the ball's height after 1.5 s?
asked by joane 
civics
what is the freedom of speech?
asked by katniss 
PHYSICS
Vector V1 is 6.29 units long and points along the negative x axis. Vector V2 is 4.23 units long and points at +35.0° to the +x axis. (a) what is V1x & V1y (b) what is the magnitude & direction (degrees) ***im confused on what my x & y is to plug into the
asked by please help! part 2 
PHYSICS help!!!!!!
A light fixture of mass 10.4 kg is suspended in the corner of a room by a combination of three wires, as shown in the diagram (below, left). If angle θ = 35.0 degrees, find the tension in each of the three wires.
asked by neeba 
physics
A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?
asked by Rebecca 
PHYSICS
how do i find the magnitude of components of vectors????
asked by HELP! KRISTI 
Physics
A man on a 2m high ladder throws a ball in the air with an initial velocity of 22m/s. If the ball is not caught by the man and instead hits the ground, how long was it in the air and how high did it go?
asked by Lea 
physics
In open heart surgery a much smaller amount of energy will defibrillate the heart. (a) What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 45.0 J of energy? kV (b) Find the amount of stored charge. mC
asked by Kg 
Math.. please helpp!
A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b
asked by carly 
physics
need help with this problem A charge of 2.73 uC is fixed in place. From a horizontal distance of 0.0465 m, a particle of mass 9.50 x 103 kg and charge 9.56 uC is fired with an initial speed of 97.2 m/s directly toward the fixed charge. What is the
asked by alex 
Physics
A pedestrian moves 5.7 kmeast and then 8 km north. Find the magnitude of the resultant dis placement vector. Answer in units of km
asked by Crystal 
Physics
An airplane flies 340 km due east, makes a rightangle turn, and then flies 390 km due north. Find the magnitude of the plane’s displace ment from its starting point. Neglect the curvature of the earth. Answer in units of km
asked by Crystal 
physics!
how to i find the magnitude of a vector from v1 and v2
asked by kris 
Physics
A truck travels up a hill with a 10 incline. The truck has a constant speed of 16 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s What is the vertical component of the truck’s velocity? Answer in units of m/s
asked by Crystal 
AP physics
A brick is thrown upward from the top of a building at an angle of 25.1 ◦ above the horizontal and with an initial speed of 19.4 m/s. The acceleration of gravity is 9.8 m/s 2 . If the brick is in ﬂight for 3.5 s, how tall is
asked by mustta 
Algebra
Find the difference quotient and simplify your answer. Step by step. f(x) = 3x2 − 6x, f(x + h) − f(x) h , h ‚ 0
asked by Kristi 
chemistry
A set of bookshelves rests on a hard floor surface on four legs, each having a crosssectional dimension of 3.9 6.5 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 260. kg. Calculate the pressure in pascals
asked by Matthew 
physics
hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the
asked by josh 
Chemistry
What is the total mass (in grams) of O2 in a room measuring (20.0 5.0 11.0) ft3 if the air in the room is at STP and contains 20.95% O2?
asked by Mary Pat 
Earth Science
How energy flows through the Earth's system.
asked by Jacob 
AP Chemistry
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.036 moles of sulfuric acid is mixed with water to make 576 mililiter of solution, what is the molarity of H+?
asked by J. A 
Math. i need help!
Assume that each female rabbit of a colony gives birth to three female rabbits. How many female rabbits of the tenth generation will be descendants of a singal rabbit of the first generation?
asked by casey 
Math, due tonight!
Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.
asked by Cody 
PHYSICS
Two lifeguards pull on ropes attached ton a raft. If they pull in the same direction, the raft experiences a net external force of 341 N to the right. If they pull in opposite directions, the raft experiences a net external force of 170 N to the left. Find
asked by Emily 
Math
What is 750 lb = to in tons What is 5/14 lbs = to in oz
asked by Gabby 
physics
The three vectors in the figure below have magnitudes a = 2.45 m, b = 3.15 m, and c = 15.0 m and angle θ = 36.5° find the x and y component of vector a
asked by HELPP assignment Due at 10 
PHYSICS
Sue and Jenny kick a soccer ball at exactly the same time. Sues foot exerts a force of 40.6 N to the north. Jennys foot exerts a force of 84.8 N to the east. What is the magnitude of the resultant force on the ball. Answer in units of N. What is the
asked by Emily 
Physics
A ball is attached to a paddle by a rubber band. The ball is initially moving away from the paddle with a speed of 4.0 m/s. After 0.2 seconds it is moving towards the paddle with a velocity of 3.5 m/s. What is the average acceleration in m/s2 during this
asked by Mel 
ALGEBRA 1
Determine the equation of combined, then solve for the missing value. Variation x varies directly with y and z. x=5 when y=10 and z=5. find x when y=20 and z=10
asked by Bobby Jones 
Math
Three consecutive integers have a sum of 357. Fid the integers algebraically. I know the three numbers are 118, 119, and 120 but how do you write it in an algebraic expression ?
asked by Lily 
chemistry
1.) a buffer is a substance which: a) donates H+ in acidic solutions b) accepts H+ in basic solutions c) accepts OH in basic solution d) donates H+ in basic solution e) donates OH in acidic solution f) accepts H+ in acid solution g) accepts OH in acid
asked by mandy 
science
What are some exaples of elements, atoms,compunds, mixtures, and molecule. Thank you for helping me on this question.
asked by ST 
Physics URGENT!!!
A hockey puck is hit on a frozen lake and starts moving with a speed of 9.7 m/s. 4.1 seconds later, its speed is 7.2 m/s. (c) How far does the puck travel during the time interval?
asked by Anonymous 
calculus
The slope of the curve x^3y^2 + 2x  5y + 2 = 0 at the point (1,1) is
asked by jump 
physics
Sarah shoots a toy dart vertically downward at 11.7 m/s at Mark standing on the ground below. Calculate the dart's velocity after 0.8 seconds.
asked by sara 
anthropology
Amok (murderous raging) in Malaysian culture, susto (e.g., spirit attack) in Latin America, and fright in Caribbean Creole are all examples of____
asked by tiffany 
Physics
A superhero flies 235 m from the top of a tall building at an angle of 25 below the horizontal. What is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer. Answer in units of m Your
asked by Crystal 
Math
The treasurer for Kent Enterprises was preparing a bank reconciliation as of October 31, 2010, when the following items were identified: Cash balance per Kent's company records $32,800 Deposits in transit $4,300 Outstanding checks $2,200 Interest earned on
asked by Anton 
physics
Sarah shoots a toy dart vertically downward at 11.7 m/s at Mark standing on the ground below. Calculate the dart's velocity after 0.8 seconds.
asked by sara 
cal
The height, h, of a cylinder is 3 times its radius, r. Which of the following represents the rate of change of the volume, V, of the cylinder with respect to its height, h?
asked by jump 
physics!!!
For the vectors with a = 14, b = 13, and c = 365, calculate the following dot products. NOTE theres a picture but i couldn't upload its a right angle triangle with c as the hypt, a bottom and b side
asked by Please Help 
Math  Imaginary
(i)(4i)(4i) it is 4i^2(4i) = 16i^3 ? If it is not right, please help. thanks!
asked by John 
math
What is the value of the following expression... 24+68+1012+1416+...100
asked by dell 
Physics
A superhero flies 235 m from the top of a tall building at an angle of 25 below the horizontal. What is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer. Answer in units of m Your
asked by Crystal 
PHI 103 informal logic
One way to disconfirm the scientific hypothesis that chickens cannot fly would be to (Points : 1) ask someone. look very hard for a chicken that can fly. simply assert that chickens can fly. simply assert that chickens cannot fly.
asked by Anonymous 
math
1. five friends are standing in a lone of 7th graders to pick up their class schedules. Laura is the 20th person behind Rayma. Rayma is the 50th person ahead of Deanna. Deanna is the 10th person behind Charlotte. Shelly is the 30th person ahead of Laura.
asked by dell 
College Physics
The ball launcher in a pinball machine has a spring that has a force constant of 1.50 N/cm. The surface on which the ball moves is inclined a = 14.5o with respect to the horizontal. If the spring is initially compressed 4.70 cm, find the launching speed of
asked by Emily Shinavier 
College Physics
If the spring is compressed a distance of 0.150 m and the gun fired vertically as shown, the gun can launch a 27.6g projectile from rest to a maximum height of 16.1 m above the starting point of the projectile. Neglecting all resistive forces, determine
asked by Emily 
math
could you help me with these two problems 4(2x5)(x2)
asked by tameka 
properties and mental math
use properties and mental math to find the value of (86 + 27) + 3
asked by alex 
cal
determine any values of x for which a tangent line to the curve f(x)=1/x will have a slope of 4
asked by jump 
Algebra1
How many twodigit positive intergers are multiples of both 2 and 5? Is the correct answer 9?
asked by Anonymous 
Intermediate Algebra
Maria drove 3 hours and 30 minutes in a dust storm. When the dust cleared she inccreased her speed by 35 mph and drove for 4 more hours. If she traveled a total of 365 miles, how fast did she drive during the dust storm?
asked by jasmine 
physics
A 29.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 17.00 m. When she is partway down the slide, at a height h2 of 8.00 m, she is moving at a speed of 6.90 m/s. Calculate the mechanical energy lost due to
asked by Emily 
physics
A force of 3.4 n is exerted on a 7.8 g rifle bullet.what is the bullet acceleration in m/s^2?
asked by tina 
AP physics
A particle moving uniformly along the x axis is located at 17.9 m at 1.45 s and at 3.9 m at 2.7 s. Find its displacement during this time in terval. Answer in units of m What is the average velocity speed during this time interval. Answer in units of m/s
asked by Laura 
7/8 Math
Length: 2/6/8/9/10 Breaking Weight 24/16/13/11/9 Explain how your equation shows that breaking weight decreases as length increases. Is this pattern reasonable for this situation? Explain. I used inverse variation equation and found that the equation would
asked by Tonja 
Mathematics
35ft of rope is equal to how many yards?
asked by Songaya 
math
is 754 9471 relativly prime people?
asked by nope 
Math
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?
asked by Ria 
managerial economics
Intertemporal Price Discrimination. Suppose that technophiles are willing to pay $400 now for the latest iPhone, but only $300 if they have to wait a year. Normal people are willing to pay $250, and their desire to purchase does not vary with time. Ignore
asked by Shawn 
Chemistry
The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction: MO(s) + CO2(g) MCO3(s) A 2.85g sample containing only MgO and CuO is placed in a 3.00L container. The container is filled with CO2
asked by Helga 
7/8 Math
what is the value of x in: x/3 + 4 = 20 Could you guys please tell me how to do it and include the answer. I have other problems like this where x is negative so I just need to know how to do it :) Thanks!
asked by Christabelle 
science (ASAP) PLZ!!
What are some examples of elements, atoms,compounds, mixtures, and molecule. Thank you for helping me on this question
asked by ST 
PHYSICS
Find the capacitance of a parallel plate capacitor having plates of area 1.00 m2 that are separated by 0.400 mm of Teflon.
asked by Kg 
Math
What is 128 cups= to in gallons igot 8 gallons i need help
asked by Gabby 
physics
A dockworker loading crates on a ship finds that a 21kg crate, initially at rest on a horizontal surface, requires a 70N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving
asked by Anonymous 
PHYSICS
A doubly charged ion is accelerated to an energy of 34.0 keV by the electric field between two parallel conducting plates separated by 2.00 cm. What is the electric field strength between the plates?
asked by Kg 
Algebra 1
xWrite the equation so that y is a function of x. 9x + 3y =18
asked by Jordan 
chemistry
A piston has an external energy of 8.00atm. How much work has been done if the cylinder goes from volume of 0.140 liters to 0.450 liters.
asked by Anonymous 
math
MEghan had 36 books in her locker. Some were library books, text books and the rest were telephone books. THe number of library books and phone books combined equals twice the number of text books. The number of text books and telephone books equals three
asked by maggie 
algebra
A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom fo the board is on the groung 4 feet away from the wall. What is the slope of the board as a positive number?
asked by Kaitlyn 
math
what is 5.2 million times 2.6
asked by love 
geography
Can you please check my answers? 1. Which has more water, The Northern or Southern Hemisphere? The Southern Hemisphere 2. Which of the following is not a peninsula: Baja or Lower California, Panama, or Yucatan? Panama 3. Is the Tropic of Cancer a parallel
asked by Reed 
Math
I need to figure out how to make graphs on a computer for a math project. Any help? I need to make histograms, back to back boxplots, and back to back stemplots.
asked by Kelsie 
Biochem
1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10
asked by Liv 
math
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?
asked by Sarah 
physics
According to Kepler's third law, the orbital period T of a planet is related to the radius R of its orbit by T2 R3. A planet's orbit is larger than Earth's by a factor if 3.39. What is the planet's orbital period?
asked by Sarah 
algebra 114
an investor invested $800 in two mutual funds. One fund earned 7% and the other earned 3% profit. If the total profit was $48, how much was invested in each mutual fund.
asked by debra 
calculus
What is the slope of the curve x = cos(y) at the point where y=pi/3
asked by jump 
chemistry
How many grams of hydrogen can be prepared by treating 2.63 g of iron with 130.0 mL of 1.50 M sulfuric acid solution, to give iron(III) sulfate and hydrogen?
asked by sarah 
calculus
Find the equation of the tangent line to the curve x^3 + xy^2 =5 at the point (1,2).
asked by jump 
Calculus II
Calculate the area inside both of the ellipses (x^2)/3 + y^2 =1 and x^2 + (y^2)/3 = 1.
asked by Lauren 
calculus
f(x)=(x^2+1)(1xx^3).Determine the equation of the line tangent to f(x) at the point (1,2).
asked by jump 
Algebra 1
Solve for x "variable": Rectangle with length of (8x) m and width of (2x) m has a perimeter of 140 m.
asked by Belle 
Physics
Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 6.82 m. The stones are thrown with the same speed of 9.83 m/s. Find the location (above
asked by Bryan 
physics
A man jogs at a speed of 1.7 m/s. His dog waits 1.4 s and then takes off running at a speed of 3.4 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? Answer in units of m
asked by Sonia 
pyshic
A car has a mass of 1.35 × 103 kg. If the force acting on the car is 6.82 × 103 N to the east, what is the car’s acceleration? Answer in units of m/s2
asked by bob 
Physics
Two boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figures below, where m1 = 15 kg and m2 = 17 kg. A force of 58 N is applied to the 17 kg box. (a1) Determine the acceleration of the boxes (b) the tension of
asked by Anonymous 
Art
Where are art styles going to lead in the near future
asked by Maria 
math
If cos(3 x)6Ó14 x e^2 y=0, find [ dy/dx] using implicit differentiation. In this problem, you should differentiate both sides of this equation with respect to x. First, using implicit differentiation, differentiate the left side of the equation with
asked by Zhao 
Math.. due tomorrow morning!
Assume that each female rabbit of a colony gives birth to three female rabbits. How many female rabbits of the tenth generation will be descendants of a singal rabbit of the first generation?
asked by casey 
Math.. due soon! help!
A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b
asked by Landon 
Physics
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.22 m from the spot, while charge B is 0.54 m from it. Find the ratio qB/qA of the charges. Help!
asked by Anthony 
Statistics
(1.96)(19.08) divided by square root 52
asked by Roseline 
Math
How do I find (a) f*g (b) g*f (c) f*f of these problems? If you can, please show me step by step ^___^ thank you 1)f(x)=x^2 2) f(x)=3x+5
asked by Sira 
Physics
Two packing crates of masses 7.93 kg and 5.13 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 5.13 kg crate lies on a smooth incline of angle 40.0°. a) Find the acceleration of the 5.13 kg crate (b)
asked by Anonymous 
Physics!
need help with this problem A charge of 2.73 uC is fixed in place. From a horizontal distance of 0.0465 m, a particle of mass 9.50 x 103 kg and charge 9.56 uC is fired with an initial speed of 97.2 m/s directly toward the fixed charge. What is the
asked by Anonymous 
chemistry
What mass of electrons would be required to just neutralize the charge of 1.4 of protons?
asked by Claire 
precalc
# 1 a special window has the shape o a rectangle surmounted by an eqilatera tiangle. ifthe perimeter o the winow is 16 ft, what dimensions will admit te most light (area of triangle= suarre root of 3/4 times x2.
asked by rebekah 
physics
hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the
asked by josh 
science
how does tea flavor spread from a tea bag throughout a cup of hot water? PLEASE HELP!!!
asked by Elijah 
Physics
A 350 N child is in a swing that is attached to a 7.50 m long rope. find the gravitational potential energy associated with the child relative to her lowest position when a) the ropes are horizontal, (b) the ropes make a 30 degree angle with the vertical,
asked by B