Questions Asked on
October 21, 2012

physics
An 76 kg construction worker sits down 2.0 m from the end of a 1440 kg steel beam to eat his lunch. The cable supporting the beam is rated at 15,000 N. Should the worker be worried? Determine the tension in the cable. i.imgur. com/Qfhkd. gif I can't figure
asked by kev 
7th grade math Ms.Sue please
At the halftime show, a marching band marched in formation. The lead drummer started at a point with coordinates (–2, –5) and moved 3 steps up and 1 step right. a. Write a rule to describe the translation. b. What were the coordinates of the drummer's
asked by Delilah 
Physics
The drawing shows a jet engine suspended beneath the wing of an airplane. The weight W of the engine is 12000 N and acts as shown in the drawing. In flight the engine produces a thrust T of 54200 N that is parallel to the ground. The rotational axis in the
asked by Annie 
Chemistry
I have a question about this one 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? Is going to shift to the right or to the left???
asked by alex 
Cultural Anthropology
The difference between transhumance and nomadic pastoralism is: (Points : 1) in transhumance people grow food and in nomadic pastoralism any domesticated plant food is acquired through trade. different types of animals are herded. in transhumance women do
asked by Maria 
Physics
The gravitational field strenght on the moon is 1.63N/kg. If a rock on the moon weights 2000N, how much does the same rock weigh on the earth?
asked by Jason 
chemistry
When the iron(II) ammonium sulfate was mixed with the ferrocyanide ion, the precipitate was initially white but turned blue upon exposure to air. What happened to iron(III) ion when the precipitate turned blue?
asked by Alisha 
physics
A 0.55 ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.5 on a frictionless horizontal surface.If the cord will break when the tension in it exceeds 95 , what is the maximum speed the ball can have?
asked by Anonymous 
Physics
A 150N block rests on a table. The suspended mass has a weight of 73N. a) What is the magnitude of the minimum force of static friction required to hold both blocks at rest? Answer in units of N b)What minimum coeﬃcient of static friction is required to
asked by Peter 
chemistry
Calculate the theoretical yield in moles of Fe(C5H7O2)3 for this experiment. Record this number on your data sheet. Calculate the theoretical yield in g Fe(C5H7O2)3 (GMM: 353.18g mol^1), for this experiment. Record this number on your data sheet. I really
asked by Anonymous 
math please help ms.sue
MegaMart collects a sales tax equal to 1/16 of the retail price of each purchase and sends this money to the state government. a. Is the amount of tax collected proportional to the cost of an item before tax is added? b. Is the amount of tax collected
asked by Cassidy 
physics
A objectspring system undergoes simple harmonic motion with an amplitude of A. Does the total energy change if the mass is doubled but the amplitude is not changed? Do the kinetic and potential energies depend on the mass? Explain. Thanks in advance
asked by roro 
physics
A child has a temperature of 101◦F. If her total skin area is 13 m2, find the en ergy loss per second due to radiation, assum ing the emissivity is 1. The StefanBoltzmann
asked by Lee 
Chemistry
Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g Mass (after reaction): test tube + HCl(aq) + stir bar + capsule 25.300 g Volume of water displaced from the squirt bottle 148 mL Temperature of the CO2(g) 287.4 K Pressure (atm)
asked by Karina 
math
explain which is more accurate: measuring to the nearest millimeter or to the nearest eighth of an inch
asked by Taylor 
Chemistry
A sample of benzoic acid contaminated with NaCl and sand is to be recrystallized: Benzoid Acid: Solubility in water at 100 degrees Celsius in g/100 mL = 6.8, at 0 degrees Celsius in g/100 mL = 0.2. NaCl: Solubility in water at 100 degrees Celsius in g/100
asked by Trisha 
physics
A child has a temperature of 101◦F. If her total skin area is 13 m2, find the en ergy loss per second due to radiation, assum ing the emissivity is 1. The StefanBoltzmann constant is 5.6696 × 10−8 W/m2 · K4 . (As sume the room temperature is
asked by Lee 
math
the sclae on a map is 1in:25mi. You measure 6.5in,between two towns what is the actual distance
asked by Taylor 
accounting
In its first month of operations, Danielle Company made three purchases of merchandise in the following sequence: (1) 161 units at $17, (2) 414 units at $18, and (3) 115 units at $19. Assuming there are 271 units on hand, compute the cost of the ending
asked by milania 
Physics
someone in a car going past you at the speed of 31m/s drops a small rock from a height of 1.5m.
asked by Mich 
7th grade math help asap plz
6. In which quadrant is the point (x, y) located if x is negative and y is positive? (1 point) II III IV I At the halftime show, a marching band marched in formation. The lead drummer started at a point with coordinates (–2, –5) and moved 3 steps up
asked by Delilah 
physics
A 89.0 kg fullback running east with a speed of 5.00 m/s is tackled by a 97.0 kg opponent running north with a speed of 6.00 m/s. (a) Calculate the velocity of the players immediately after the tackle.
asked by Anonymous 
Physics
A footballl is thrown directly toward a receiver with initial speed of 18.0 m/s At an angle of 35.0 degrees above the horizontal. At that instant, The receiver is 18.0 m from the quarterback. In what direction and with what constant speed should the
asked by Mollie 
VHS
A ski starts from rest and slides down 22 degree incline 75 m long.If the coefficient of friction is .090 what is the ski's speed at the base of incline and if the snow is level at the foot of the incline and has the same coefficient of friction,how far
asked by SP 
Chemistry
A reaction of magnesium with nickel (iii) chloride will produce magnesium chloride and nickel. Using 31.76g of magnesium would produce how many grams of nickel?
asked by Nicole 
physics
A man claims he can safely hold on to a 14.20 kg child in a headon collision with a relative speed of 132. mi/h lasting for 0.100 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child.
asked by Anonymous 
Physics
A baseball coach shouts loudly at an umpire standing 3.6 meters away. If the sound power produced by the coach is 2.2×10−3 W, what is the intensity of the sound when it reaches the umpire? Answer in units of W/m2.
asked by Aj 
Math
in the back stockroom at the wheel shop, the number of seats and horns equaled the number of wheels. the number of seats and handlebars equaled the number of horns. twice the number of wheels is equal to 3 times number of handlebars. Determine the
asked by Char 
math
classify the triangle as a scalene,isoceles or equilateral and acute right or obtuse
asked by mom 
physics
In a Broadway performance an 81.0 kg actor swings from a 2.35 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 35.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before
asked by Anonymous 
physics
Gayle runs at a speed of 8.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snowcovered hill, that has a vertical drop of 14.0 m. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops
asked by Anonymous 
chemistry
A certain weak base has a Kb of 9.00 × 107. What concentration of this base will produce a pH of 10.34?
asked by Kelly 
Business math
Meg's pension plan is an annuity with a guaranteed return of 3% per year (compounded quarterly). She would like to retire with a pension of $50,000 per quarter for 10 years. If she works 22 years before retiring, how much money must she and her employer
asked by Roseanne 
AP Physics
A 45 kg gymnast steps off a platform located 1.3 m above a spring board. The spring board compresses 25 cm. a)What is the spring constant of the spring board? b) If energy is in fact conserved in this problem, explain how high the gymnast will spring
asked by Anna 
physics
a skier moving at 15 m/s down a 20 degree slope encounters a region of wet snow of coefficient of friction is 0.8. how far down the slope does she go before stopping
asked by Jazmin 
college physics
A student moves a box of books by attaching a rope to the box and pulling with a force of 80.0 N at angle of 45o. The box of books has a mass of 25.0 kg and the coefficient of kinetic friction between the bottom of the box and the sidewalk is 0.43. Find
asked by amber 
Logarithms
Solve: 3 log 10^x = 4.2 the 10 is underneath the log I got a weird number in scientific notation. 2.511... X 10^9
asked by Sam 
math
whatis the unit price of 40 ounces for $12
asked by kyla 
physics
A hungry 675 N bear walks out on a beam in an attempt to retrieve some "goodies" hanging at the end. The beam is uniform, weighs 250 N, and is 5.00m long; the goodies weigh 110 N. When the bear is at x = 1.00 m, find the tension in the wire and the
asked by Emily 
Math Calculus
A 20 foot ladder is sliding down a vertical wall at a constant rate of 2 feet per second. a) How fast is the ladder moving away from the wall when the base of the ladder is 12 feet away from the wall? b) Find the rate of change at which the angle between
asked by Olivis 
Chemistry
how do you balance the equation with H3PO4(aq)and BaCl2(aq)?
asked by Sally 
Chem
Suppose that a stable element with atomic number 119, symbol Wr, has been discovered. (d) What would be the most likely charge of the Wr ion in stable ionic compounds? (e) Write a balanced equation that would represent the reaction of Wr with water. (f)
asked by Dave 
7th grade Math
MegaMart collects a sales tax equal to 1/16 of the retail price of each purchase and sends this money tp the state government. a. Is the amount of tax collected proportional to the cost of an item before tax is added? b. Is the amount of tax collected
asked by Cassidy 
7th grade math help ASAP
4. Point E is located at (–2, 2) and point F is located at (4, –6). What is the distance between points E and F? (1 point) square root of fiftytwo square root of twentyeight 10 square root of twenty 6. In which quadrant is the point (x, y) located if
asked by Delilah 
Chemistry
Calculate the theoretical yield in moles of Fe(C5H7O2)3 for this experiment. Record this number on your data sheet. Calculate the theoretical yield in g Fe(C5H7O2)3 (GMM: 353.18g mol^1), for this experiment. Record this number on your data sheet. I really
asked by Singh 
Chemistry
Calculate the de Broglie wavelength associated with a body of mass 1.5 kg moving with a velocity of 100m/s.
asked by Sparkle 
Chemistry
Use the balanced equation to answer the following: 3AgNO3(aq) + FeCl3(aq)...Fe(NO3)3(aq) + 3AgCl(s) If 21.73g of FeCl3 is mixed with 48.97g of AgNO3 a) Which is the limiting reagent? b) How many grams of AgCl can be theoretically produced? c) If 15.97g of
asked by Nicole 
Logarithms
Solve 7^3x=623
asked by Sam 
Math Calculus
A 20 foot ladder is sliding down a vertical wall at a constant rate of 2 feet per second. a) How fast is the ladder moving away from the wall when the base of the ladder is 12 feet away from the wall? b) Find the rate of change at which the angle between
asked by Olivis 
math
You have just isolated a new radioactive element. If you can determine its halflife, you will win the Nobel Prize in physics. You purify a sample of 2 grams. One of your colleagues steals half of it, and eight days later you find that 0.1 gram of the
asked by Roseanne 
physics
The force shown in the force vs. time diagram in the figure below acts on a 1.10 kg object. Find: (a) the impulse of the force exerted on the ball.
asked by Anonymous 
physics
Consult Multiple Concept Example 10 in preparation for this problem. Traveling at a speed of 18.7 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is
asked by Daman 
Physics
The time needed for a water wave to change from the equilibrium level to the crest is 0.4185 s. What fraction of a wavelength is this? What is the period of the wave? Answer in units of s. What is the frequency of the wave? Answer in units of Hz.
asked by Aj 
Physics
A skyrocket explodes 77 m above the ground. Three observers are spaced 106 m apart, with observer A directly under the point of the explosion. Find the ratio of the sound intensity heard by observer A to that heard by observer B. Find the ratio of the
asked by Aj 
Physics
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 136 kg. Under the
asked by Kane 
history
Assia Djebar’s mother breaks Algerian custom when she refers to her husband by his name is it true false i think it was fasle
asked by benji 
Physics
A pistol that fires a signal flare gives the flare an initial speed (muzzle speed) of 185 m/s. (a) If the flare is fired at an angle of 45° above the horizontal on the level salt flats of Utah, what is its horizontal range? You can ignore air resistance.
asked by Michelle 
java
Write a java application that finds the smallest of several integers. Prompt the user for the number of integers that will be input, then prompt the user for that number of integers. Evaluate the integers to determine the smallest value. Run the program to
asked by saleh 
physics
A person wants to push a lamp (mass 7.2 kg) across the floor, for which the coefficient of friction is 0.23. Calculate the maximum height above the floor at which the person can push the lamp so that it slides rather than tips (Fig. 962).
asked by Olivia 
geometry
A classroom has a floor area of 600 square feet. What is the floor area of the classroom in square meters? describe three different correct ways to solve this area problem. Each way of solving should use the fact that 1 inch = 2.54cm. Explain your
asked by Chelsea 
chem problem
Using the information provided calculate the heat of reaction involved in the conversion of 25.00 g of methane (CH4, MM=16.0426 g/mol) to chloroform (CHCl3, MM=119.3779 g/mol): CH4(g) + 3 Cl2(g) > CHCl3(l) + 3 HCl(g) Given the following: C(graphite) + 2
asked by Kjd 
chemistry help
An amount of 414.27 g of zinc sulfide (ZnS, MM=97.44 g/mol) reacts with 99.58 g of oxygen gas (O2, MM=31.999 g/mol) at a constant temperature of 298.0 K and constant pressure of 1.00 atm. The reaction: 2 ZnS(s) + 3 O2(g) > 2 ZnO(s) + 2 SO2(g) dH =
asked by Tymee 
stats
Suppose a shipment of 500 machine parts contains 62 defective and 438 nondefective machine parts. From the shipment you take a random sample of 25. You are interested in the number of defective machine parts out of 25 trials and corresponding
asked by laura 
Chemistry
What property must a substance have if u want to use the substance to make an aqueous solution? Grade 9
asked by Seastone 
Physics
The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One track is longer than the other, however. Identical blocks are projected up each track with the same initial speed v0. On the longer
asked by jim 
Physics
Two positive charges of 6 �C are separated by a distance of 50 cm in air. What is the electric field strength at the midpoint of the line joining the charges? 72.0 V/m 64.8 V/m 6.0 V/m zero V/m I'm honestly clueless because I don't recall ever learning
asked by Derp 
College Chemistry
A 14.0 g sample of Krypton has a temperature of 25C at 625mm Hg. What is the volume, in Milliliters, of the krypton?
asked by Will 
chem problem
Using the information provided calculate the heat of reaction involved in the conversion of 25.00 g of methane (CH4, MM=16.0426 g/mol) to chloroform (CHCl3, MM=119.3779 g/mol): CH4(g) + 3 Cl2(g) > CHCl3(l) + 3 HCl(g) Given the following: C(graphite) + 2
asked by Kjd 
Physics
A 45kg skater rounds a 5.0m radius turn at 6.3 m/s. (A.) What are the vertical and horizontal components of the force the ice exerts on her skate blades? (B.) At what angle can she lean without falling over?
asked by John 
English
In this sentence: Matt began to see himself differently after he talked to Mr. Bataky. In this sentence "himself" is an object pronoun, subject pronoun, intensive pronoun, reflexive pronoun?
asked by Sally 
Physics
A 6.7 kg package starts from rest and slides down a mail chute that is 50 m long and has a vertical drop of 10m. If the velocity of the package at the bottom of the chute is 4m/s what is the average frictional force on the package as i slides down the
asked by Jazmin 
Physics
A footballl is thrown directly toward a receiver with initial speed of 18.0 m/s At an angle of 35.0 degrees above the horizontal. At that instant, The receiver is 18.0 m from the quarterback. In what direction and with what constant speed should the
asked by Mollie 
chemistry
Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium? This is what i found for ksp CaF2 Ca(2+) +2F() Ksp=(x)(4x^2) where x=solubility Therefore, Ksp=3.7 x 10^11 and for Qsp I am not sure how to go on about
asked by John 
Physics
A 150N block rests on a table. The suspended mass has a weight of 73N. a) What is the magnitude of the minimum force of static friction required to hold both blocks at rest? Answer in units of N b)What minimum coeﬃcient of static friction is required to
asked by Peter 
physics
Janet jumps off a high diving platform with a horizontal velocity of 2.11 m/s and lands in the water 2.6 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2 .
asked by Rachel 
Physical science
What is the gravitational potential energy of a 5kg object resting 3m above the ground?
asked by Drake 
Physics
Two resistors 10 Ω and 5 Ω are connected in parallel across a 15 V battery. What is the potential difference across the 10 Ω resistor? 5 V 10 V 15 V 20 V My answer would be A; 5 V
asked by Herp 
Physics
An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW? 8.1 Ω 1.4 Ω 81 Ω 14 Ω Both A and B seem reasonable, and I'm leaning more towards B. Help..?
asked by Herp 
physics
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The
asked by greg 
Physics(please bobpursley)
A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 6.7 m/s. The coeﬃcient of kinetic friction between the sled’s runners and the hard, icy snow is 0.048, and the girl and sled together weigh 615N. The acceleration
asked by George 
Physics
During a baseball game, a batter hits a high popup. If the ball remains in the air for 4.11 s, how high does it rise?
asked by Kayla 
PHYSICS
A block of mass 0.86 kg is suspended by a string which is wrapped so that it is at a radius of 0.061 m from the center of a pulley. The moment of inertia of the pulley is 4.60×103 kg·m2. There is friction as the pulley turns. The block starts from rest,
asked by Emily 
math
A jar contains six red marbles, four green marbles and five yellow ones. a) determine the number of ways in which any thee marbles can be selected? b) Determine the number of ways to select four marbles where two are red and two are yellow? c) Determine
asked by Carol 
Physics
a 0.2kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30 m/s and rebounds up at 25 m/s. If the ball is in contact with the sidewalk for 0.025s, what is the magnitude of the average force applied by the sidewalk on
asked by Jazmin 
child day care mangement
developmentally appropriate practices are based upon knowledge of
asked by susan 
Physics Conducting Spheres
1. Two concentric conducting spherical shells have radii of 0.145 m. and 0.215 m. The inner sphere bears a charge of 3.00E08 C. An electron escapes from the inner sphere with negligible speed. Assuming that the region between the spheres is a vacuum,
asked by andrew 
science
Three lead balls of mass m1 = 14 kg, m2 = 26 kg, and m3 = 8.7 kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force.
asked by jane 
math
average attendance at a school's basketball games increased from 1000 to 1500 last year. One student said that represented a 150% increase. Explai the student's error. What was the actual percent increase?
asked by Taylor 
Physics
Find the angular velocity of a clock's second hand and the linear speed and linear acceleration of a point on the second hand 7.54 cm from the rotation axis.
asked by Pat 
Math Calculus
A 20 foot ladder is sliding down a vertical wall at a constant rate of 2 feet per second. a) How fast is the ladder moving away from the wall when the base of the ladder is 12 feet away from the wall? b) Find the rate of change at which the angle between
asked by Olivis 
Physics
A capacitor has a charge of 5 µC when charged by a potential difference of 1.5 V. What is the capacitance of the capacitor? 3.3x10^6 F 3.3x10^6 F 7.5x10^6 F 0.3x10^6 F I would think the answer is 3.3X10^F, or choice B
asked by Derp 
Physics
A force of 50 N accelerates a 5.0 kg block at 6.0 m/s2 along a horizontal surface. (a) What is the frictional force acting on the block? (b) What is the coefficient of friction?
asked by HanuPhysics 
Physics
A military helicopter on a training mission is flying horizontally at a speed of 60.0 m/s and accidentally drops a bomb (fortunately not armed) at an elevation of 350 m. You can ignore air resistance. Find the horizontal and vertical components of its
asked by Michelle 
precalc
#1 For what positive numbers will the cube of a number exceed four times its square? #2 For what positive numbers will the cube of a number be less than the number? thanks
asked by Rebekah 
physics
To determine the location of his center of mass, a physics student lies on a lightweight plank supported by two scales L = 2.44 m apart. If the left scale reads 309 N, and the right scale reads 125 N, calculate the student's mass. Calculate the distance
asked by Emily 
chemistry
I'm so irritated i cannot come up with the right answer. When 1662 J of heat energy is added to 45.9 g of hexane, C6H14, the temperature increases by 16.0 °C. Calculate the molar heat capacity of C6H14.
asked by smh 
Trigonometry
use the double angle formula to rewrite. 6cos^23 and (cosx +sinx)(cosxsinx)
asked by Josh G. 
Chemistry
What property must a substance have if u want to use the substance to make an aqueous solution? Thank you
asked by Seastone 
p
A 16.0 g bullet is fired horizontally into a 87 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 168 N/m. The bullet becomes embedded in the block. The bullet block system
asked by Anonymous 
Statistics
In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The preexam totals for all students in the course have mean 275 and standard
asked by Kevin 
math
when is the absolute value of a difference equal to the difference of the absolute values? Explain
asked by Taylor 
precalc.
Answers for Determine The Minimum Distance From The Point (18,20) To The Line 5x+8y=120 Include: Graph, Algebra Of Any Equations, Algebra Of System, Setup & Steps Of Final Calculations.
asked by Okzy 
math
A spiiner was spun 16 times. The results are shown in the table below. yellow = 5 white = 4 red = 0 blue = 2 green = 2 orange = 3 whch colors' experimental probability matches its theoretical probability a. yellow, green and orange b. white, red and orange
asked by kyle 
College Chemistry
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm
asked by Will 
Physics
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 25.0 rad/s2. Find the speed of a point on the blade 4.00 m from the axis of rotation when the blade has completed 20 revolutions.
asked by koko 
chemistry
If the heat of combustion for a specific compound is 1310.0 kJ/mol and its molar mass is 75.45 g/mol, how many grams of this compound must you burn to release 708.60 kJ of heat?
asked by :) 
Geometry
The measure of angle B, the supplement of angle A, is four times the measure of angle C, the complement of angle A. I need to find the measure of all angles and i have no idea of where to start, any help would be appreciated.
asked by Anonymous 
Reading
O, sweep of stars over Harlem Streets O, little breath of oblivion that is night 1) what literary device is used in line 2? Metaphor or onomatopoeia? 2) "little breath of oblivion" refers to what quality of night? Bleakness or silence?
asked by Stars 
Physics
A 3.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 13.5 N. Find the speed of the block after it has moved 4.22 m. Answer in units of m/s
asked by Najah 
Math Calculus
A 20 foot ladder is sliding down a vertical wall at a constant rate of 2 feet per second. a) How fast is the ladder moving away from the wall when the base of the ladder is 12 feet away from the wall? b) Find the rate of change at which the angle between
asked by Olivis 
Calculus
use the intermediate value theorem to prove that every real number has a cubic root. That is, prove that for any real number a there exists a number c such that c^3=a
asked by not so master 
Precalc
#1 For what positive numbers will the cube of a number exceed four times its square? #2 For what positive numbers will the cube of a number be less than the number? thanks
asked by Rebekah 
physics!!
The two masses (m1 = 4.96 kg and m2 = 2.90 kg) in the Atwood's machine shown in the figure below are released from rest, with m1 at a height of 0.800 m above the floor. When m1 hits the ground its speed is 0.203 m/s. Assuming that the pulley is a uniform
asked by Emily 
algebra
How many ounces of a 19% copper alloy metal must be added to 42% ounces of a 40% copper alloy metal to produce a metal which is 31% copper alloy
asked by sh 
Physics
A 0.30 kg mass is attached to a spring with a spring constant 170 N/m so that the mass is allowed to move on a horizontal frictionless surface. The mass is released from rest when the spring is compressed 0.15 m. (a) Find the force on the mass. N (b) Find
asked by roro 
physics
A 2.42 kg steel ball strikes a massive wall at 11.7 m/s at an angle of 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.118 s, what is the
asked by Anonymous 
physics
A 48.2 kg girl is standing on a 160. kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 2.00 m/s to the right relative to the
asked by Anonymous 
Physics
A ball is fired from the ground with an initial speed of 2.38 * 10^3 m/s (approximately seven times the speed of sound) at an initial angle of 56.0° to the horizontal. Neglect air resistance. (a) Find the ball's horizontal range.(m)
asked by Michelle 
math
the perimeter of a dog park is 156 ft. If the length of the park is 2 ft. less than 3 times the width, what are the dimensions of the dog park?
asked by reba 
Physics
a 0.2kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30 m/s and rebounds up at 25 m/s. If the ball is in contact with the sidewalk for 0.025s, what is the magnitude of the average force applied by the sidewalk on
asked by Jazmin 
Physics
When a particular wire is vibrating with a frequency of 5.3 Hz, a transverse wave of wavelength 69.3 cm is produced. Determine the speed of wave pulses along the wire. Answer in units of m/s.
asked by Aj 
geography
Can you check my answers please? 1.In what hemispheres is Africa located? Northern, Southern, Eastern, and Western 2. What is the easternmost state in the 48 contiguous states? Maine 3. What is the capital of the southernmost country in Africa? Pretoria,
asked by Reed 
chemistry help
An amount of 414.27 g of zinc sulfide (ZnS, MM=97.44 g/mol) reacts with 99.58 g of oxygen gas (O2, MM=31.999 g/mol) at a constant temperature of 298.0 K and constant pressure of 1.00 atm. The reaction: 2 ZnS(s) + 3 O2(g) > 2 ZnO(s) + 2 SO2(g) dH =
asked by Tymee 
chem
In an industrial process to make alcohol, bacteria, sugar, and water are fed into a bioreactor. The bacteria make alcohol, and water as well as leftover sugar. We desire to remove all the cells from the process stream so we may purify our alcohol product.
asked by Krin 
physics
A 16.0 g bullet is fired horizontally into a 87 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 168 N/m. The bullet becomes embedded in the block. The bullet block system
asked by Anonymous 
Math
Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths Surface Space shuttle completes 220 degrees of a Revolution around earth in one day What is the average speed of the space Shuttle
asked by Chris 
physics
A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball
asked by Anonymous 
Financial accounting
Laird Company sells coffee makers used in business offices. Its beginning inventory of coffee makers was 200 units at $41 per unit. During the year, Laird made two batch purchases of coffee makers. The first was a 295unit purchase at $46 per unit; the
asked by Meg 
physics
A wind is blowing directly from east to west. The pilot of a small plane finds that if he points the nose of the plane 30.0 ° north of east, his velocity with respect to the ground is in the direction 55.1 ° north of east. The speed of the plane with
asked by Anonymous 
Geometry
Joey has a toy car that is a 1:64 scale model of an actual car. (In other words, the length of the actual car is 64 times as long as the length of the toy car.) Joey's toy car can go 5 feet per second. What is the equivalent speed in miles per hour for the
asked by Elizabeth Barnes 
Physics
A bullet is fired straight up from a gun with a muzzle velocity of 312 m/s. Neglecting air resistance, what will be its displacement after 1.4 s?
asked by Kayla 
statistics
If other factors are held constant, how does increasing the number of scores in each sample affect the value of the independent measures t statistic and the likelihood of rejecting the null hypothesis?
asked by tanya 
Statistics
The null and alternate hypotheses are: H0: μ1 = μ2 H1: μ1 ≠ μ2 A random sample of 15 items from the first population showed a mean of 50 and a standard deviation of 5. A sample of 12 items for the second population showed a mean of 46 and a standard
asked by Anonymous 
chem 1
9.70 grams of nitrogen gas are allowed to react with 5.44 grams of oxygen gas. What is the maximum amount of nitrogen monoxide that can be formed? What amount of the excess reagent remains after the reaction is complete?
asked by kim 
physics
A 1.8 tall basketball player attempts a goal 11 from the basket that is 3.05 high.If he shoots the ball at a 54 ◦ angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard? The acceleration
asked by Haley 
Social Studies
What geographic factors have an impact on Colombia?
asked by Unknown 
physics
A 0.43 kg object connected to a light spring with a spring constant of 21.4 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. (b) Determine the speed of
asked by roro 
government
There is much debate in our country about activist judges and strict constructionist judges. Do you believe that judges should be limited to interpreting what the constitution and federal laws say?
asked by Dora 
chem
In an industrial process to make alcohol, bacteria, sugar, and water are fed into a bioreactor. The bacteria make alcohol, and water as well as leftover sugar. We desire to remove all the cells from the process stream so we may purify our alcohol product.
asked by Krin 
MATHLinear Programming
Hey guys stumped on this one \HELP PLEAZE A.S.A.P. minimize p= 15x +18y subject to x+2y= 36 x>=0 y>=0
asked by garnel 
government
why should federal courts be able to declare an act of Congress unconstitutional
asked by Dora 
Business English
Which of the following sentences is the refusal implied rather than directly stated
asked by Nelly 
Math
Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths Surface Space shuttle completes 220 degrees of a Revolution around earth in one day What is the average speed of the space Shuttle
asked by Chris 
physics
Why is more impulse delivered during a collision when bouncing occurs than during one when it doesn't?
asked by Anonymous 
math
average attendance at a school's basketball games increased from 1000 to 1500 last year. One student said that represented a 150% increase. Explain the studnets error. What was the actual percent increase
asked by Taylor 
math
My denominator is 5 more than my numerator.I am equal to 27/72
asked by tina 
physics
A 33.6kg crate rests on a horizontal floor, and a 64.7kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.
asked by Daman 
algebra
Nurse erika needs to prepare 12 liters of a 10% saline solution. The stockroom only has 7 % and 15% saline solutions. How much of each solution should erika mix together to get 12 litres of a 10% saline solution
asked by sh 
Physics
Beth, a construction worker, attempts to pull a stake out of the ground by pulling on a rope that is attached to the stake. The rope makes an angle of 60.9 ◦ with the horizontal. If Beth exerts a force of 116 N on the rope, what is the magnitude of the
asked by AJ 
Physics
What is the mass of a paratrooper who experiences an air resistance of 400 N and an acceleration of 4.5 m/s2 during a parachute jump.
asked by HanuPhysics 
Chemistry
How long would it take a 20Kw heater to warm up 1000 litres of water from 15 degrees to 55 degrees in hours? specific heat of water = 4.18kJ. also How much heat would a block of ice melting at 200Kg per hour absorb? thanks if anyone can help!
asked by Dave 
Business
Choose a product you wish to market. You will follow this product through all four P's of Marketing. Describe your goal. Is it to maximize quantity, market penetration, market share, gross revenue, profit, or other goal (such as social change)? In your one
asked by Amber 
Physics
if rock A is dropped from a cliff and rock B is thrown downward off the cliff, which of the two has a greater velocity?
asked by Barbara 
Physics
A 28 kg canoe has a 24 kg passenger. The passenger is 2.0 m from the left end of the canoe and the center of mass of the canoe by itself is 2.9 m from the left end. a. Calculate the position of the center of mass of the canoe/passenger system. b. if we
asked by Ezek 
physics
joe weighs 650N. how much work does he do if he climbs 4m up a a rope?
asked by Brenna 
Impact force
A 65.0 kg professional diver performs a dive from a platform 10 m above the water surface. Find the average impact force she experiences in her collision with the water if the collision lasts for 0.800 s.
asked by Anonymous 
Sogaduzela
Simplify sin165.
asked by Mfanvela 
College Chemistry
Two moles of Mg and five moles of O2 are placed in a reaction vessel, and then the Mg is ignited to produce Mg (F.W.= 40.31 g/mole). What is the actual mole ratio, the calculated mole ratio, how many moles of MgO are formed, and what is the weight of MgO
asked by Shelby 
aig math
Rosa and Marty had the same amount of money.After Rosa spent $45 and Marty spent $117, Rosa had 4 times as much money as Marty. How much money did Rosa have at first? I don't know the answer to this one so can you show me how you got your answer and what's
asked by lidia 
English
It was two by the village clock, When he came to the bridge in Concord town. He heard the bleating of the flock, And the twitter of birds among the trees, And felt the breath of the morning breeze Blowing over the meadows brown. And one was safe and asleep
asked by 303 
physics
A certain 0.92 kg object will reach terminal velocity after 0.75 seconds. What is the speed of its terminal velocity and what is the force from air resistance at this speed? (Assume it would would accelerate at 9.81 m/s^2 until it reaches terminal
asked by Lauren 
Grammar
Hydrogen does not react with..... or Hydrogen does not react to........ Which is correct? Do I use with or to?
asked by Anonymous 
politics
There are various levels and types of judicial courts. In the case Sitz v. Michigan Department of Police, two levels of government and court systems interact to come to a final verdict. What was the final verdict and how did it reach that conclusion?
asked by Dora 
Physics
A 2.42kg block starts from rest at the top of a 22.9◦ incline and accelerates uniformly down the incline,moving 2.41m in 2.14s. The acceleration of gravity is 9.81m/s2. a) What is the magnitude of the acceleration of the block? Answer in units of m/s2 b)
asked by Alex 
chemistry
why is the bond length an average rather than a fixed number ?
asked by eddie 
chemistry
name the following compound by the stock system (international systemic naming system: 1)Li2CO3 2) MnO2 3) HBrO4 4) (NH4)2 S 5) H3PO3 6) P2O5
asked by Tasha 
Grammar
Hydrogen react with ..... Or Hydrogen react to...... Do I use with or to?
asked by Anonymous 
math
in a triangle /the small side is x+6 one side at the bottom is 20/ another side divid by a line start from the angle cross from it and mark 1 part is x /another part is 8/what is valuae of x
asked by carrolton 
math
The length and the breadth of a rectangle are rounded off to the nearest centimetre.The perimeter of the rectangle is 26cm.What are the possible values of its length and breadth.
asked by aarthi 
Chemistry
If there were 197g of sulfuric acid in your car battery, how many grams of baking soda would you need to completely neutralize the acid. Here is the balanced equation: H2SO4(aq) + NaHCO3(s)....NaSO4(aq) + 2CO2(g) + 2H20(l)
asked by Courtney 
just a question
Can efforts to reinvent government solve the problems associated with bureaucracies? Why or why not?
asked by dora 
A.P. Chemistry
10. What mass of LiSO4 (110 g/mol) is required to prepare 30mL of 0.20M LiSO4? 11. Liquid bromine is reacted with aluminum to produce solid aluminum bromide. If 0.450L of bromine reacts with excess aluminum, how much aluminum is made? (Density of liquid
asked by Yazmin 
math
Tina'goal this month is to earn$10,000.She earns $13,500 in total. What percentage did she meet her goal
asked by Mary 
Geometry
Imagine that all the people on Earth could stand side by side together. How much area would be needed? Would all the people on earth fit in Rhode Island? Explain your reasoning. Rhode Island, the smallest state in terms of area, has a land area of 1000
asked by Elizabeth Barnes 
AP Chemistry
What volume of 0.596M K3PO4 is required to react with 29 mL of 0.864 M MgCl2 according to the equation 2K3PO4 + 3MgCl2 > Mg3(PO4)2 + 6KCl Answer in units of mL
asked by Tara 
Math input/output
Input. Output 12. 10 16 32. 62. 35 70. 39 86 What is the rule I am in 5 th grade and have no clue
asked by Lily 
english
We had to do a design and write something on it. I want mine to be perfect but have a couple of punctuation questions. It is a creation myth of the Iroquois. Question 1. I am saying my picture shows a scene from the "Iroquis Creation Myth". Is this
asked by B6 
geometry
Determine the measure of angle B of triangle ABC given the following information A= 42 deg c = 12 C = 96 deg
asked by joe 
science
mass is 64.0 and volume is 16.0 what is the density?
asked by kenzie 
English
You look down. You look blue. You look depressed. You look melancholy. You look gloomy. (Are they all the same?)
asked by rfvv 
physics
Ann, a 59.2 kg person throws a 0.0435 kg snowball forward with a ground speed of 39.5 m/s. Billy, with a mass of 63.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.22 m/s, and Billy is initially at
asked by Anonymous 
calculus
If f and g are two functions for which f' = g and g' = f for all x, then prove that f^2  g^2 must be a constant.
asked by asdasd 
linear programmingmaths
PLEASE HELP!!!!!!! machines A &B. Model A machines each cost $200 to make at a profit of $25 each. Model B cost $3oo to make at a $40 profit. Total number of machines do not exceed 2500 a month. Company has no more $600,000 per month for manufacturing
asked by garnel 
Chemistry Help Please!!
What effect would a sweaty person have on the pool chemistry? Would the reaction tend to be forced to the right or to the left? Any help is greatly appreciated!
asked by Corneil 
Social Studies
Hi, I am doing a project and I don't know what this means: Columbia's Human Development Index is 0.710. I don't know if that means how many years or what. Thanks for answers!
asked by Unknown 
math
Courtney wanted to share raisins with Norman and Mark. She counted 36 raisins in her box. She said "If we all have the same number of raisins, there are 98 raisins in all." What is wrong with Courtney's statement?
asked by Jane 
Chemistry
I titrated 0.25g of soda ash mixed with 25mL of deionized water and it took 43.7mL of hydrochloric acid to complete the titration. I am trying to figure out how to find the moles of sodium carbonate in the soda ash and then the percent of sodium carbonate
asked by Zach 
Physics
A harmonic wave is traveling along a rope. It is observed that the oscillator that gener ates the wave completes 44.9 in 30.4 s. Also, a given maximum travels 436 cm along the rope in 9.4 s. What is the wavelength? Answer in units of cm
asked by Aj 
Physics
A harmonic wave in a wire has amplitude A = 7.6 mm, wavelength λ = 0.679 m and frequency f = 543 Hz. What is the propagation speed of the wave? Answer in units of m/s. The wire has linear mass density of 5.04 g/m. Determine the wire’s tension. Answer in
asked by Aj 
Physics
An experiment requires sound intensity 0.942 W/m2 at the distance of 2.7 m in any direction from a speaker. What total sound power is required? Answer in units of W.
asked by Aj 
retail pharmacy assistant
being a member of the health team allows the pharmacy assistanr to? (a)be a link between the doctor,the customer and the pharmacist (b)recommend and dispense prescription drugs (c)refer customers to a physician (d)work without the supervision of a
asked by susue 
Chemistry
I am wondering about a conceptual question: In an acid/base reaction is there a way to know for sure when an H2O is going to stay with the larger molecule or break off and form water? here are my two examples: R=cyclohexane RC=(triple bonded to)CH + KOH
asked by UCI STUDENT 
math
how long to the nearest year will it take an investment in germany to double its value if the interest is compunded every six months
asked by zac 
math
4(3) exponent is 2
asked by Anonymous 
Chemistry problem
The volume of an ideal gas contracts from 5.68 L to 2.35 L as the result of a constant applied pressure of 1.48 atm. The system releases 733 J of heat during this process. Calculate deltaU (internal energy) for this process. Express answer in Joules.
asked by Tymee 
math
38a/11=34
asked by jakobie 
Science
What are some websites that gives facts about Weed Killer? How do I start an investigation report about this subject? Please help ... anyone?
asked by Losa 
college statistic
there are 10 candidates to fill 3 spots. how many teams can be formed
asked by Anonymous 
algebra
Nurse erika needs to prepare 12 liters of a 10% saline solution. The stockroom only has 7 % and 15% saline solutions. How much of each solution should erika mix together to get 12 litres of a 10% saline solution
asked by sh 
Geography!!!!!!!!!!!!!!!!!!!!!!!!
1) What is the difference between folding and faulting? 2) What is the difference between intrusive vulcanicity and extrusive vulcanicity?
asked by Nicole 
Psy 230
The text for this class is strange to read and about clear as mud. The question that I am needing help with is this one: Rotter's sociallearning theory state that over time, a behavior and a reinforcer (a consequence) become so closely associated that a
asked by Marie 
Physics
A ball of moist clay falls 10.4 m to the ground. It is in contact with the ground for 20.5 ms before stopping. (a) What is the average acceleration of the clay during the time it is in contact with the ground? (Treat the ball as a particle.) m/s2 (b) Is
asked by Allie 
history please help
Nativeborn Americans, especially those of small towns and rural areas, rallied in the 1920s to protect American values. What did they see as threatening those values? How did they seek to protect them? Do any Americans today see similar threats, and if
asked by janixa 
math help urgent
From the graph find the maximum δ>0 which is such that if 0
asked by someguy 
chemistry
how do the names of covalent compounds differ from the names of ionic compounds?
asked by Boo Boo 
chemistry
How is this equation balanced Al2(OH)3 S3 (s) + 3H2O (l) >
asked by What? 
Algebra
(3X+1)/(3)(3/2)=(1X)/(4) I am having trouble simplifying the fractions because everytime I do it I come up with a different answer at the end.
asked by Linda 
math
in a triangle /one side is x/one side is x+1/another side is 20/if it is true and what is value of x
asked by lewisville 
Math
How would you derive n(E)= E^2/((e^E/T)  1) a) Evaluate dn/dE at fixed T. Leave answer in symbolic forms of E and T. b) dn/dT at fixed E.
asked by Avery 
geography
1. What is the name of the third largest ocean in the world? The Indian Ocean 2. What is the capital of the People's Democratic Republic of Yemen? Aden 3. What is the equator? The imaginary line that stretches around the Earth separating the Northern and
asked by Reed 
english
what are the two formal fallacies? My answer fallacy of denying the antecedent and fallacy of affirming the consequent. I don't know if this is correct.
asked by m 
geography
Does anyone know wher ican find info. about Hammarabi's code.
asked by aclynn 
Physics
Janetjumpsoffahighdivingplatformwith ahorizontalvelocityof2.96m/sandlandsin thewater2.8slater. Howhighistheplatform ?Theacceleration ofgravityis9.8m/s2.
asked by Mich 
Criminal Justice
How does the structure of the government relate to the criminal justice system?
asked by Charles 
geography
Can you check my answers please? 1. How does the continent you live on rank in land area when compared to all other continents? North America has the third largest land area of all the continents. 2. PortauPrince is the capital of what Caribbean Sea
asked by Reed 
maths
the floodlight is 6.1m tall. Jonny's height is unknown,though his shadow is 2m long when he stands 3m from the base of a floodlight. What is the height of jonny?
asked by Max 
American Government
BureaucracyThey say red tape is partly a consequence of “bigness” but more typically a result of legal and political requirements. Is this a sufficient explanation? Is there more red tape in government than these two factors can explain?
asked by Anonymous 
Chemistry
someone help pls!! percentage of ethanol in the "blood" sample on a v/v basis is 0.0143% v/v. is the "blood" sample analysed over the limit for driving? (legal limit is 80mg alcohol per 100mL blood. assume the density of ethanol is 0.785g/mL and the
asked by Becky 
Chemistry
What mass of LiSO4 (110 g/mol) is required to prepare 30mL of 0.20M LiSO4?
asked by Yazmin 
chemistry
how to calculate activation energy and frequency factor
asked by Aisha 
math
The length and the breadth of a rectangle are rounded off to the nearest centimetre.The perimeter of the rectangle is 26cm.What are the possible values of its length and breadth.
asked by aarthi 
Physics
you throw a ball upwards in the air at a velocity of 80m/s how fast will it be moving at 3 sec?
asked by Ahmad Bradshaw 
stu
An individual with utility function U(X) = X2 bought Lottery A and Lottery B. Lottery A gives a payoff of $2 or $4 equally likely. Lottery B gives a payoff of $4 or $8 equally likely. a) Calculate the expected utility of Lottery A and Lottery B together.
asked by nguyen hong minh 
Maths
For y= 2x squared + x  1 the xintercepts and the turning point respectively are?
asked by Charlie 
Math
I have a drawing with fractions. What does this mean a scale 1:2. I have to draw that picture a scale 1:2. What does that mean?" thank you
asked by chan 
history
what are some of the natural resources found at the grand canyon?
asked by destiny 
math
is the set of positive integers the same as the set of nonnegative integers? Explain
asked by Taylor 
math
When is the absolute value of a difference equal to the difference equal to the difference of the absolute values? Explain
asked by Taylor 
Physics
A 60 kg box is on a 80 m long plane which is inclined at 30 degrees, the coefficient of friction is 0.25. How much force is needed to move it up a plane A.) at a constant velocity and B.) with an acceleration of 2 m/s^2
asked by C0C0 
chemistry
explain why a precipitate forms when silver nitrate solution is added to sodium chloride solution?
asked by vicky 
psyc101
Hormones that regulate the development and functioning of reproductive organs are called?
asked by Anonymous 
math
is the set of positive intgers the same as the set of nonegative integers? Explain?
asked by Taylor 
math
Explain? which is more accurate: measuring to the nearest millimeter or to the nearest eighth of an inch
asked by Maya 
stats
if x is a normally distributed random variable with amean of 8.00 if the proability for x is less than 9.54 is 0.67, then find the standard deviation of x
asked by tamara 
algerbia
a tugboat goes 120 miles up streem in 15 hours it takes 10 hours to come back the speed of the tugboat is and the speed of the curent is
asked by Anonymous 
government
Why would bureaucrats become more concerned that elaborate procedures are followed, as opposed to achieving certain substantive outcomes? What political relationships cause this result?
asked by Dora 
alerbra
1/3x=1/2
asked by danyle 
algebra
1. x9/5=1/5 2. 1/2+x=2/3 3. 1/2+x=2/3 4. x/4=3/8 5. 3/2+x=2
asked by Camilia 
math
My numerator is 10 less than my denominator. I am equal to 3/5
asked by tina 
math
In lowest terms, my numerator is 4 less than my denominator. Write 5 fractions 1 could be.
asked by tina 
trigonometry
Determine the area of triangle ABC, given the following information c = 40m b = 20m A = 48deg
asked by joe 
Chemistry problem
The volume of an ideal gas contracts from 5.68 L to 2.35 L as the result of a constant applied pressure of 1.48 atm. The system releases 733 J of heat during this process. Calculate deltaU (internal energy) for this process. Express answer in Joules.
asked by Tymee 
math
5/2+x=6
asked by Lordellro 
goverment
in the recent presidential election, romney's comment "binders full of woman" really offended people. why were people so offended, i don't really understand, did he mean something bad?
asked by jake 
Math
determine the value of k for which the !@#$%^&tion f(x)=4x^23x+2kx+1 has 2 zeros.
asked by Neha 
math
I need help showing work. I did it in my head and now missing a huge part of how I got it. 110=2/3*8 my answer is 165 but they ask me to showwork, which I am always getting docked because as I read the question I do it in my head. Ugh! Please help!
asked by lucy 
business
Brown Inc. has just paid its monthly bill,what balance sheet and income statement accounts will this transaction affect?
asked by GERRY 
math
4(3) exponent is 2
asked by Anonymous 
geography
Can you check my answers please? 1. Which continents do not cross the equator? North America, Europe, Australia, and Antarctica 2. What two parallels form the boundaries of the "tropics" or low latitudes? The 23 degree 50 N line and the 23 degree 50 S line
asked by Reed 
English
In "The people could fly" what opposing forces struggle against eachother. And what is the main conflict in the story?
asked by Anna 
physics
I am studying for a physics exam and this is the pretest. There are some that I don't understand. If someone could help me get to the answer (show all the work so I can look it all over) that would be AMAZING! Thank you very much! 2. A roller coaster,
asked by Karrine 
physics
In getting ready to slamdunk the ball, a basketball player starts from rest and sprints to a speed of 5.17 m/s in 1.29 s. Assuming that the player accelerates uniformly, determine the distance he runs.
asked by Anonymous 
physics
" displacement is a change in position. what is the equation for displacement." i forgot the equation please help
asked by Anonymous 
Math
How many different numbers can be formed fro the set of seven numbers (1,2,3,4,5,6,7) if a) repitition is allowed b) repitition is not allowed c) repitition is allowed and the tird digit must be different from the second digit?
asked by Carol 
Math
How many five digit numbers can be formed from the set of nine numbers (0,1,2,3,4,5,6,7,8) if no number is repeated and no number starts with zero and a) there are no other restrictins b) the result must be an odd number
asked by Carol 
Gen Chem
For my chem class I have 3 elements and have to find what they are used for today or an interesting fact. I have looked but I can't really fin anything. My elements are: Cobalt,Thulium, and Roentgenium I found that cobalt is used in money (nickels,
asked by Andrea 
Math
A coffee dealer mixed 12 pounds of one grade coffee with 10 pounds of another grade of coffee to obtain a blend worth $54. He then made a second blend worth $61 by mixing 8 pounds of the first grade with 15 pounds of the second grade. Find the price per
asked by Jamese 
Math
A international phone call cost a fixed amount for the first minute and a certain rate per each additional minute. If a 7 minute phone call cost $10 and a $4 call cost &6.40, find the fixed charge and the rate per each additional minute.
asked by Jamese 
SCIENCE
HOW DOES KINETIC ENERGY DEPEND ON MASS?
asked by jiskha 
Algebra 2
Solve: x^33x^2=0 Please explain, here's what I did. Am I right? I didn't know what to do next. x^2(x3)=0
asked by LaRazia 
Cemistry
Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium?
asked by John 
business statics
a random sample of the grade of 78 students is taken. what is the probability that the average grade will be between 80.3% and 82.3%?
asked by kenneth 
Algebra 2
Determine the xintercepts of the f(x)= (x2)(x+3)(x7) Please explain, I don't know if I did it right. I got 2, 3, 7
asked by LaRazia 
writing
I have to make a comic strip using the words these, through, suppose, stood, piece, leave, mouth, broke, count and feather I have no clue how to do this can anyone help me? Thanks
asked by Patty 
5th grade math
cam had 35 more coins than kip. She gave he share to kip who divided all the coins equally into 3 stacks. If each stack has 45 coins,how many coins did cam have at first? My answer is 85, am i right if i am right please show me how you got the answer?
asked by lidia 
French 2
Ma Jupe est trop longue (pantalon)
asked by Alisha 
Logarithms
Solve Log base 10^x=4
asked by Sam 
mechanics
using a comealong I am pulling 220 lbs. up a stairway(45*) angle. How much weight am I actually pulling?
asked by Gaston 
Chemistry
Write the chemical equation for the standard molar enthalpy of formation of periodic acid, H5IO6.
asked by Sam 
Psy 230
The text for this class is strange to read and about clear as mud. The question that I am needing help with is this one: Rotter's sociallearning theory state that over time, a behavior and a reinforcer (a consequence) become so closely associated that a
asked by Marie 
math
In a card game using a normal deck of playing cards containing 52 cards, 13 cards are dealt to a player. a) how many different combinations of cards are possible in that players hands? b) how many different hands are possible that consist ofnine spades and
asked by Carol 
history
Nativeborn Americans, especially those of small towns and rural areas, rallied in the 1920s to protect American values. What did they see as threatening those values? How did they seek to protect them? Do any Americans today see similar threats, and if
asked by janixa 
Marketing
Identify the product concepts you used in determining the packaging. How does the packaging affect the effectiveness of the packaging? Are there any physical, social, or economic restraints that could limit or enhance your packaging? Market Research
asked by Amber 
math
What is the distance between the rectangular coordinates (1,16) and (10,4)?
asked by Jake 
chemistry
How is this equation balanced Al2(OH3 S3 (s) +3H2O (l)>
asked by What? 
algebra
How do you solve: 3x plus 2y = $7.25
asked by Linda 
math
In an election, Kate lost to Lee by 32 votes. Because the vote was so close, they decided to have a revote. All of Kate's supporters voted fro her again, but some of Lee's supporters switched their votes to vote for Kate. Kate won by the revote by 6
asked by Jake