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A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Each cylinder has a radius of 0.29 cm. A compressive force of F = 6250 N is applied to the right end of the brass cylinder. Find the amount by which the length of the stack decreases.
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
Two runners start simultaneously from the same point on the circular 200 m track and run in opposite directions. One runs at a constant speed of 6.14 m/s and the other runs at a constant speed of 5.43m/s. When they first meet, for how long a time ..
You have been asked to design a "ballistic spring system" to measure the speed of bullets. Find an expression for the bullet's initial speed
A little league player balances a bat 57.0 cm from one end. She then hangs her 0.540-kg batting helmet on that end of the bat, Determine the mass of the bat
A human can be electrocuted if a current of 0.053 A passes near the heart. If a human is considered to be a resistor in a circuit with a resistance of 2039 ?,
Young's modulus for earth can be approximated by 5.5*10^5 MN/m^2 and the corresponding shear modulus by 2.0*10^5 MN/m^2. How far from the station did the earthquake take place
If the ropes supporting the rings are attached to ceiling directly above, what is the tension in each rope.
A skateboarder, with an initial speed of 2.0 m/s, rolls virtually friction free down a straight incline of length 18m in 3.3s. At what angle is the incline oriented above the horizontal
Four vectors A,B,C ,D and are shown (not to scale). Vector A has magnitude 23.0 and acts at an angle of 14.7 degrees with respect to the positive x axis. find the magnitude and direction of the resultant vector R
A building has two open doors facing the bay. The walls of the building absorb sound well, so multiple reflections can be ignored. Two people are standing a distance L = 150 m from the wall with the open doors, as pictured.
If the spring is pulled until it stretches 2.40cm and the pack remains at rest, what is the force of friction exerted on the backpack by the table
Calculate the magnitude and direction of net electric field. what is the efficiency of the engine under those conditions.
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