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two batting robot sliding on a frictionless surface. Robot A, with a mass 20 kg, initially moves at 2.0 m/s parallel to the x-axis. It collides with robot B, whch has a mass of 12 kg and is initially set to rest. After the collision, robot A is moving 1.0 m/s in a direction that makes an angle of approximately 30 degrees with its initial direction. What is the final velocity of robot B?
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The truck accelerates forward on level ground. What is the maximum acceleration the truck can have so that the crate does not slide relative to the truck's flatbed
A Styrofoam cup holding 122 g of hot water at 1.00 102°C cools to room temperature, 21.0°C. What is the change in entropy of the room
A rifle with a weight of 35 N fires a 5.0-g bullet with a speed of 250 m/s, If a 675-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
Calculate the electrical resistivity of a sample length of wire given the following data: length =.80 meter, diameter= .003 meter and resistance =.266 ohms
You can launch the proton from the surface of a sphere of with charge Q and radius R, from the center of a ring of charge Q and radius R, or from the center of a disk of charge Q and radius R. Which is the best choice.
A block with mass = 5.00 slides down a surface inclined 36.9 to the horizontal (the figure (Figure 1) ). The coefficient of kinetic friction is 0.26. A string attached to the block is wrapped around a flywheel on a fixed axis at . The flywheel has..
q1. a jetliner can fly 5.32 hours on a full load of fuel. without any wind it flies at the speed of 220 ms. the plane
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 37.0kg and diameter 71 cm. The power is off for 27.0s and during this time the flywheel slows due to friction in its axle bearings...
At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. Find the maximum downward acceleration experienced by the crewman
A simple harmonic oscillator is undergoing oscillations with an amplitude A. How far is it from its equilibrium position when the kinetic and potential energies are equal?
How much work is done on the toboggan by the tension force? Explain how much work is done if the same tension is directed parallel to the snow?
An elephant's legs have a reasonably uniform cross section from top to bottom, and they are quite long, An elephant has legs that stretch 2.3 m from its shoulders to the ground. How much time is required for one leg to swing forward after completin..
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