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Two blocks of ice, one four times as heavy as the other, are at rest on a frozen lake. A person pushes each block the same distance . Ignore friction and assume that an equal force is exerted on each block.Which of the following statements is true about the kinetic energy of the heavier block after the push?
You are standing on the ground at the origin of a coordinate system. An airplane flies over you with constant velocity parallel to the x axis and at a constant height of 7.05 103 m. At t = 0, the airplane is directly above you so that the vector l..
Illustrate what is the uniform speed of a gondola when the Ferris wheel is running at full speed?
A car of mass 1530 kg traveling at 24 m/s is at the foot of a hill that rises 110 m in 3.8 km. Find the average power delivered by the car's engine
The drum of the photocopying machine in the problem above has a length of 48 cm and a diameter of 9 cm. What is the total charge on the drum
A container of volume 23 cm3 is initially filled with air. The container is after that evacuated at 0oC to a pressure of 30 mPa. How many molecules are in the container after evacuation if we suppose that air is an ideal gas.
A jeweler working awith a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 C, what mass of water at 25 C is needed to lower the rings temperature to 38 c.
A vertical spring (spring constant =175 N/m) is mounted on the floor. A 0.470-kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. Obtain the frequency (in Hz) of the motion
The fastest recorded pitch in Major League Baseball was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, How fast was Ryan's pitch
Calculate the force a piano tuner applies to stretch a steel piano wire 7.70 mm, if the wire is originally 0.850 mm in diameter and 1.30 m long
Two steel juggling balls each carry a charge of 2.75 %u03BCC. What is the distance between the centers of the two balls?
An athlete at a gymnasium holds a 3.0kg steel ball in his hand. His arm is 70cm long and has a mass of 4.0kg. Calculate the magnitude of the torque about his shoulder if he holds his arm
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
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