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A train traveling at v0 = 20.0 m/s begins to brake by applying a velocity-dependent instantaneous acceleration a(v) = ? /(v u) m/s2, where ? = – 24.0 m2/s3, v is the instantaneous velocity of the train, and u = 0.5 m/s. Decide the distance traveled by the train until it comes to a complete stop.
A sample of liquid has an initial volume of 1.5L. The volume is reduced by 0.2mL, when the pressure increases by 140kPa. What is the bulk modulus on the liquid
The bulk modulus for helium is 1.01x105 N/m2 and its density is 0.179 kg/m3. How many times the speed of sound in air (331m/s) is the speed of sound in helium?
The distance to the Andromeda Galaxy is estimated at about 2 ´ 106 light years. A light year is distance travelled by light in one year; if the speed of light is 3 ´ 108 m/s, about how far is it from our galaxy to Andromeda? (1 year = 3.15 ´ 107 s..
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 13 complete swings in a time of 35.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.
question11 the molecular mass of helium is 4 gmol boltzmannrsquos constant is 1.38066 times 10minus23 jk universal gas
Your suitcase has not slid all the way down the slope andis going around at a constant speed on a circle (r =12.0 m) as the carousel turns. How much time is required for your suitcase to go around once
you are keeping pace with another runner at 6 minutes per mile but are 10 m behind her when she is 100m from the finish
Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of ei..
A medium sized home may have a roof with a surface area of 120m2. Find the total amount of solar energy incident on the roof in one day
An amazing parent pushes their child's sled (total mass = 65kg) so that the sled is moving at 5 m/s at the top at the sledding hill which makes a 20 degree angle with the horizontal. calculate the speed of the sled
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
A flat uniform circular disk (radius = 2.40 m, mass = 1.00 x 10^2 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 45.0 kg person, standing 0.95 m fro..
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