Tuesday

March 3, 2015

March 3, 2015

Number of results: 30,912

**physics**

A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.5 x 10 exponent 5 kg, its speed is 27.0 m/s and the net braking force is 4.30 x 10 exponent 5 N, (A) what id its speed 7.50 s later? (b) how far has it traveled in this time?
*November 1, 2011 by anna*

**physics**

The rider sees a traffic queue ahead. He applies the brakes and reduces the speed of the motorbike from 18 m/s to 3 m/s. Use the equation in the box to calculate the kinetic energy lost by the motorbike. 1 over 2× mass × speed
*February 15, 2012 by joe*

**pHYSICS hELP rATIONAL SPEEDS OF DISKS**

If rotational speed of a disc remains constant, what happens to the speed of a point on the disc if its distance from the axis is doubled? It stays the same It also doubles It triples It quadruples
*April 18, 2012 by James *

**physics**

a 60.00-kg athlete leaps straight up into the air from a trampoline with an intial speed of 9.0 m/s. The goal of this problem is to find the maxiumum height she attains and her speed at half maximum height. what are the interacting objects and how do they interact?
*November 3, 2012 by yue xing lu*

**Physic**

1. Water at a pressure of 3.00 x 10 5th Pa flows through a horizontal pipe at a speed of 1.00 m/s. The pipe narrows to one-fourth its original diameter. What is the speed of the flow in the narrow section? Not sure was successfully posted
*December 5, 2012 by Leo*

**calculus**

An automobile travels at a constant speed around a curve whose radius of curvature is 2000m. What is the maximum allowable speed if the maximum acceptable value for the normal scalar component of acceleration is 1.5m/s squared?
*April 24, 2013 by aimi najwa*

**Physics**

A jetliner, travelling northward, is landing with a speed of 79 m/s. Once the jet touches down, it has 710 m of runway in which to reduce its speed to 7.4 m/s. Compute the the average accelaration (magnitude and direction) of the plane during landing.
*September 20, 2013 by Cam*

**Chemistry**

Find the enthalpy of combustion of magnesium using Hess' law given the following data (assume that exactly 100.0 mL of HCl was used in each trial and that HCl is in excess) Magnesium/HCl reaction: Grams of Mg= 0.244g Initial temp= 32.2 degrees celsius Final temp= 21.3 degrees ...
*July 21, 2014 by Liz*

**Physics**

A rock of mass m and a rock of mass 2m are both released from rest at the same height and fee no air resistance as they fall. Which statements about these rocks are true? (there may be more than one!) EXPLAIN HOW YOU KNOW THEY ARE TRUE AND EXPLAIN WHY THE OTHERS ARE WRONG!!!(a...
*March 24, 2011 by Sam Potter*

**Physics**

A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.74c and the exploration vehicle approaching at a speed of 0.98c. What is the speed of the exploration vehicle relative to ...
*July 20, 2012 by Beth*

**Physics**

A 14000 kg railroad car travels alone on a level frictionless track with a constant speed of 24.0 m/s. A 6500 kg additional load is dropped onto the car. What then will be the car's speed?
*February 1, 2012 by Yaya*

**physics**

a car of mass 'm'starts from rest and is driven with constant power.after some time it covers a distance 'x'.what should be the speed of car?how we can find the speed of car?
*April 25, 2012 by muhammad*

**Physics **

Use 5.98 × 10 24 kg as the mass of the Earth. A 2350 kg meteorite has a speed of 143 m/s just before colliding head-on with the Earth. Determine the recoil speed of the Earth. Answer in units of m/s
*December 2, 2012 by Emily*

**Science**

Goldie goldfish a speed swimmer loves to race around the parks poud which is .5 miles around. If she can swim 20 laps around the track in 2 hours, what is her average speed?
*December 18, 2013 by Nikki*

**Physics**

Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at 5.60 m/s. After the collision, the orange disk ...
*March 5, 2010 by Ana*

**Physics**

A person with a mass of 76 kg is moving at a constant speed in a vertical circle on a Ferris wheel with a radius of 37.6 meters. If the difference between his normal force at the bottom (FNB) and the normal force at the top (FNT) of the circle is one third of his weight (FNB-...
*October 21, 2011 by Rick*

**Math**

Scientists use the Beaufort wind scale to approximate wind speed. The formula is B= 1.69 sqrt(s+4.45) -3.49 where B is the Beaufort number and s is the speed in miles per hour. To the nearest mile per hour, what is the approximate wind speed if the Beaufort number is 6?
*December 31, 2011 by Mallory*

**Algebra**

during the first part of a canoe trip the canoe travels 71 miles at a certain speed. The canoe travels 7 miles on the second part of the trip at a speed 5mph slower. The total time of the trip is 3 hours. what are the speed in each part of the trip?
*February 10, 2012 by julie*

**Chemistry**

Determination of the solubility product of PbI2. From the experimental data we obtain [I-] directly. To obtain Ksp for PbI2, we must calculate [Pb2+] in each equilibrium system. This is most easily done by constructing an equilibrium table. We first find the initial amount of ...
*April 7, 2011 by Laura*

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...
*February 8, 2011 by Emily*

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...
*February 8, 2011 by Emily*

**math **

The University of Oregon girls club soccer team is raffling off a bicycle to raise money for new equipment. If they charge 2 dollars per ticket, they will sell 600 tickets. For each 50 cent increase in ticket price, they will sell 30 fewer tickets. What ticket price should ...
*February 12, 2015 by Sam*

**Math**

A person standing close to the edge on the top of a 160-foot building throws a baseball vertically upward. The quadratic function s(t) = -16t^2 +64t + 160 models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. After how many seconds does the ...
*October 18, 2011 by Nicole *

**MATH URGENT!!!!**

With the given model: h=-0.045d^2+2d where h is the height of the ball from the ground(in yards) and d is the horizontal distance of the ball(in yards) from its starting point. A.)Pat is standing on the 17-yard line when the football passes over his head. How high up is the ...
*April 8, 2011 by Melisa*

**Physics**

Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object is fired directly ...
*June 28, 2012 by Anna*

**help!!!!!!!! Physics**

A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are listed in kilometers per hour. What is...
*September 29, 2013 by Mary*

**algebra**

The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 48 feet is a function of time in seconds given by h(t) = −16t2 + 32t + 48. (a) Find the maximum height of the projectile. ft (b) Find the time t when the projectile...
*December 12, 2014 by Barb*

**Physics**

Two 75.0-kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 140 degrees, what is their speed after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of player 2 be at an ...
*April 4, 2011 by Aestas*

**physics**

An airplane flies from Boston to San Francisco (a distance of 5000 km) in the morning, then immediately returns to Boston. The speed of the plane relative to the air is 240 m/s. The wind is blowing at 41 m/s from west to east, so it is "in the face" of the plane on the way to ...
*October 4, 2012 by Garcia*

**physics**

A boat’s speed in still water is vBW = 1.85 m/s. If the boat is to travel directly across a river whose current has speed vWS = 1.20 m/s, at what upstream angle must the boat head?
*November 15, 2011 by ahmed*

**Algebra 2**

An airplane flies 1050 km with the wind. In the same amount of time, it can fly 750 km against the wind. The speed of the plane in the still air is 200 km/h. Find the speed of the wind.
*April 12, 2012 by Nancy*

**Physics**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...
*February 8, 2011 by Emily*

**Physics**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...
*February 8, 2011 by Em*

**physic**

A spacecraft of mass = 4673 kg with a speed 5.0 10 m/s approaches Saturn which is moving in the opposite direction with a speed 9.6 10 m/s. After interacting gravitationally with Saturn, the spacecraft swings around Saturn and heads off in the opposite direction it approached...
*October 26, 2013 by Anonymous*

**physics**

A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h in the same direction. 1.What is the name of the physical process that would occur if both vehicles kept moving at constant speed? 2. How long would...
*December 2, 2008 by Sandhya*

**physics**

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...
*October 15, 2010 by Sarah*

**physics**

38. A rock of mass 0.400 kg is released from the surface and sinks in the ocean. As the rock descends it is acted upon by three forces: gravity, buoyancy, and drag. The buoyancy is an upward force equal to half its weight. Drag from the water can be modeled by F = kv, where k...
*February 17, 2015 by Danny*

**College Physics**

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...
*October 14, 2010 by Jordan*

**physics**

During a snowball ght, your opponent distracts you by throwing a snowball at you with a high arc. She throws snowballs with a speed of 26.5 m/s and the first is thrown at 70.0 degrees. As you are watching the first snowball, she throws a second at a lower angle. (a) If both ...
*August 6, 2011 by waqas*

**physics**

a high speed sander has a disk of 2.74 cm in radius that rotates its disks about the axis at a constant rate of 503 rev/min. determine the linear speed of a point 2.33 cm from the disk's center. answer in units of m/s
*October 18, 2007 by Will*

**physics**

A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for crossing?
*October 18, 2010 by john*

**physics**

A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for crossing?
*October 18, 2010 by john*

**physics**

A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for crossing?
*October 18, 2010 by john*

**math...?**

to save fuel on the 240 km trip to the cottage, the Nakamura family reduce their usual average speed by 20 km/h. this lengthens their journey by 1 hour. what is the slower average speed? i was told this question is not complete to answer? is that true?
*March 21, 2011 by dawn*

**algebra**

A pilot heading his polane due north finds the actual direction of travel to be 5.2 NE. The planes's air speed is 315 mi/h, and the wind is from die west. Find the plane's ground speed and the velocity of the wind.
*November 2, 2011 by Arielle*

**dynamics**

12. A car travels around a horizontal circular track of radius 45m.If the car increases its speed at a constant rate of 1.2m/s2 starting from rest, determine the time needed for it to reach an acceleration of 1.4m/s2. What is its speed at this instant?
*August 3, 2012 by shivankar*

**math**

a car travels around a horizontal circular track of radius 45m. if the car increases its speed at a constant rate of 1.2m/s starting from rest, determine the time needed for it to reach an acceleration of 1.4m/s. What is its speed at this instant?
*August 4, 2012 by raj*

**Dynamics**

A car travels around a horizontal circular track of radius 45m.If the car increases its speed at a constant rate of 1.2m/s2 starting from rest, determine the time needed for it to reach an acceleration of 1.4m/s2. What is its speed at this instant?
*August 6, 2012 by ROHIT*

**Calculus - Optimization **

The cost of fuel for a boat is one half the cube of the speed on knots plus 216/hour. Find the most economical speed for the boat if it goes on a 500 nautical mile trip.
*March 20, 2013 by Sam*

**Physics**

A 1.40 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force that varies with position as F = 3x^2 - 2x. If the block's speed passing through the origin was 3.80 m/s, with what speed (in meters/second) does it pass the point x...
*April 18, 2013 by CPhy*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
*June 5, 2013 by DANNY*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
*June 6, 2013 by Danny*

**Physics**

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
*June 6, 2013 by Danny*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
*June 6, 2013 by Danny*

**Physics**

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
*June 6, 2013 by Danny*

**physics/precalculus**

3) A wind with a speed of 60 km/h is directed TOWARDS the SE. A plane, flying due NORTH has an airspeed of 280 m/s. What is the speed (in compass notation) the plane is actually travelling as seen by an air traffic controller on the ground?
*December 16, 2013 by Emma*

**Physics**

On a curved roadway of radius 100 m, the suggested speed limit is 35 mph (approximately 16 m/s). What must the coefficient of friction be between a car’s tires and the road for the car to safely negotiate the curve at the posted speed?
*January 30, 2014 by Tom *

**math**

A boat traveling downstream a distance of 39 miles then came right back.If the speed of the current was 12 mph and the total trip took 4 hours 20 minutes,find the average speed of the boat relative to the water.
*February 1, 2014 by russ*

**English**

1. At school, I enjoy chatting with my close friends. 2. At school, I enjoy cleaning with other classmates. 3. At school, I enjoy playing soccer in the playground. 4. At school, I enjoy eating cookies at the school shop. 5. At school, I enjoy playing basketball in the gym. 6. ...
*November 30, 2012 by rfvv*

**algebra**

The speed of a passenger train is 18mph faster than the speed of a freight train. The passenger train travels 260 miles in the same it takes the same time it takes the freight train to travel 170 miles. Find the speed of each train.
*June 1, 2012 by plz hlp*

**Linear Programming Homework Problem **

An investment firm hired you to manage one of their new mutual funds. The fund invests in two main companies/stocks, Pittsburg Steel (X1) and IMB(X2). Pittsburg Steel is currently trading at $40.00 per share and IMB at $30.00 per share. Your goal is to maximize the return on ...
*October 15, 2014 by bobmarely23*

**Physics**

Analyzing Roller Coaster Performance Using Conservation of Mechanical Energy At the beginning of a roller coaster ride, the car is lifted to the top of a large hill and released. The speed of the car at the top of the hill is small, so we will assume it to be zero. The car ...
*November 30, 2013 by Angie*

**PHYSICS**

When a particle moves on a circle at constant speed, its acceleration vector: a) is zero m/s^2 b) points toward the center of the circle. c) points parallel to its velocity vector. It's zero m/s^2 since it's moving at a constant speed, right? No. Remember, acceleration is a ...
*February 18, 2007 by Technoboi11*

**Physics 141**

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 93.0 kg. The mass of the rock is 0.320 kg. Initially the wagon is rolling forward at a speed of 0.520 m/s. ...
*March 11, 2014 by dakota22*

**Math**

The paddle wheel of a boat measures 16 feet in diameter and is revolving at a rate of 20 rpm. The maximum depth of the paddle wheel under water is 1 foot. Suppose a point is located at the lowest point of the wheel at t=0. 1. Write a cosine function with phase shift 0 for ...
*May 29, 2009 by sophie*

**physics**

A bird wants to rech its nest that is located 53 meters (35 degrees south of west) from where it is perched. If the maximum speed that the bird can fly with respect to the air is 12m/s and there is a wind blowing from a direction of east 35 degrees south at a speed of 8.1 ...
*March 24, 2013 by Kate *

**Chemistry 30**

Calculate the molar heat of reaction for the NaOH(aq) using the data obtained from this experiment. (this is a neutralization question) H2so4 Volume= 30ml Concentration=1.0mol/l Initial temp. = 29.9 NAOH Volume= 50ml C = 1.0 mol/L Initial temp. = 29 Final temp of the two ...
*June 2, 2010 by Marium*

**Science**

What forces act on a ball rolling down a slope?
*January 28, 2007 by Wandi*

**biology**

what is the hollow ball of cells formed during cleavage?
*October 11, 2007 by jack*

**6th grade**

Why does a bouncy ball bounce in spite of gravity?
*December 11, 2008 by Ashlee*

**Physics**

the energy of a ball rolling up an inclined place plane is?
*June 7, 2010 by Mary*

**science**

A ball having a weight of 1.5 N is dropped from a height of 4 meters
*December 3, 2010 by Anonymous*

**science**

what is the volume of a 6.o-kg aluminum ball having a density of 2700 kg/m3?
*January 26, 2011 by tony*

**physics**

if you raise a ball 1m and it has a mass of 50g, how much work was done?
*February 15, 2011 by mackenzee*

**history**

who was john ball and his connection to the peasants data (1381)....
*June 14, 2011 by claire*

**5th grade comprehension**

what is the spot from which a ball is snapped in football?
*September 8, 2011 by Alexia*

**physics**

How much work must be done on a 8.0 kg ball to give it a velocity of 36 m/s?
*November 30, 2011 by Anonymous*

**english**

how can i fix this sentence? “A glove and ball is the required gear.”
*January 17, 2012 by aran*

**science**

what is ways of changing the direction of moving billard ball.
*February 5, 2012 by kaith mira*

**English**

We laughed at the colorful ball. Is this sentence structurally ambiguous?
*February 8, 2012 by JoJo*

**integrated algebra **

What is the rebound height of a ball dropped from 275 cm
*March 6, 2013 by cayla*

**Geometry**

what is the radius of the ball of string to the nearest tenth of a foot? A. 3.3 B. 6.6 C. 13.2 D. 20.75
*September 29, 2013 by George*

**Civics Still**

mena placed an order to purchase 12 soccer uniforms for her sons team. she paid for the uniforms, and they should have been delivered within 2 weeks. The uniforms were never delivered, and the company refuses to refund her money. Mena contacts a lawyer to file a lawsuit ...
*January 11, 2015 by Me*

**Physics **

You are a general in the Napoleonic wars. An enemy fort 10m tall is located 1000m from your cannon. Your cannon expert is insisting that you will get the best results at an angle of 25 above the horizontal. Your cannon is located on a hill 10m tall. You have soldiers storming ...
*February 19, 2014 by Michelle*

**Physics**

You are a general in the Napoleonic wars. An enemy fort 10m tall is located 1000m from your cannon. Your cannon expert is insisting that you will get the best results at an angle of 25 above the horizontal. Your cannon is located on a hill 10m tall. You have soldiers storming ...
*February 22, 2014 by Michelle*

**physics**

A 15.0 kg stone and a 150 kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial gravitational ...
*February 22, 2011 by andrea*

**Algebra**

A business owner opens one store in town A. The equation p(x)=10,000(1.075)^t represents the anticipated profit after t years. The business owner opens a store in town B six months later and predicts the profit from that store to increase at the same rate. Assume that the ...
*July 11, 2014 by Junior*

**Chemistry **

Because of the changing color of the solution as the following reaction proceeds, the rate law can be determined by measuring the rate of disappearance of the permanganate ion (MnO4-). 2MnO4-(aq)+ 5H2C2O4(aq) + 6H+(aq) -> 2Mn2+(aq) + 10CO2(g) + 8H2O(l) The following initial...
*February 5, 2015 by Freddy*

**Physics**

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 97.0 kg. The mass of the rock is 0.320 kg. Initially the wagon is rolling forward at a speed of 0.540 m/s. ...
*October 14, 2012 by Sara*

**physics**

A 12100 kg railroad car travels alone on a level frictionless track with a constant speed of 20.5 m/s. A 5850 kg load, initially at rest, is dropped onto the car. What will be the car's new speed?
*March 11, 2010 by Anonymous*

**physics**

The driver of a car traveling at 30 m/s needs to quickly reduce the car’s speed to 20m/s to round a curve in the highway. If the car’s deceleration has a magnitude of 6.0 m/s2, how far does it travel while reducing its speed?
*October 9, 2010 by lee*

**physics**

The speed -time graph of a particle moving along a fixed direction is shown below.obtain the distance travelled by the particle between t=0 and t=10 s.what is the average speed of the particle over this interval?
*October 23, 2010 by soya.*

**Physics**

A hockey puck is hit on a frozen lake and starts moving with a speed of 13.80 m/s. Exactly 6.7 s later, its speed is 7.10 m/s. a) what is the puck's average acceleration? b) what is the coefficient of kinetic friction between the puck and the ice?
*January 22, 2013 by wendlen*

**Physics**

A stone is thrown straight upward with a speed of 12 m/s from the edge of a 70 m high cliff. How long is the stone in the air? What is the speed just before it hits the ground? What is the total distance the stone traveled?
*September 12, 2012 by Katie*

**Physics**

A 12100kg railroad car travels alone on a level frictionless track with a constant speed of 15.0m/s . A 6100kg load, initially at rest, is dropped onto the car. What is the car's new speed?
*October 14, 2013 by Ivana*

**Physics **

A hockey puck is hit on a frozen lake and starts moving with a speed of 13.80 m/s. Exactly 5.1 s later, its speed is 7.80 m/s. (a) What is the puck's average acceleration? m/s2 (b) What is the coefficient of kinetic friction between the puck and the ice?
*December 8, 2014 by Anonymous*

**Physics**

A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 8 rotations in 20.7 seconds when twirled. What is the block's tangential (linear) speed? What is the block's angular speed?
*February 16, 2015 by Anonymous *

**Physics**

A group of students observes that a wooden block (m = 0.40 kg) on the end of a string with a radius of 0.7 meters makes 9 rotations in 20.7 seconds when twirled. a)What is the block's tangential (linear) speed? b)What is the block's angular speed?
*February 16, 2015 by phys 220 *

**physics**

A 5.00kg stone and a 50.0kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial gravitational potential...
*December 12, 2014 by Mike*

**Chemistry**

On more than one occasion when our kids were small, we would come inside from playing in the snow and I would make hot chocolate by heating the chocolate milk in the microwave. Invariably, I would get the milk too hot for at least one of them. One time, rather than adding more...
*January 11, 2013 by Breanne *

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