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A 1.9-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the spring/mass system is 2.5 J. What is the elastic potential energy of the system when the 1.9-kg block is replaced by a 6.7-kg block?
1. you are hired by an industry that owns a building with a floor area of 6 m by 10 m and a ceiling height of 4 m. the
Determine the new planets mass density to earth mass density
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.4. find the resulting angular speed of the student and the stool
Two charged objects experience a mutual repulsive force of 0.71 N. If the charge of one of the objects is reduced by half and the distance separating the objects is quadrupled, what is the new force? (Enter the magnitude of the force.)
A curling stone, with a mass of 20.0 kg, slides across the ice at 1.50 m/s. It collides head on with a stationary 0.160-kg hockey puck. What is the stone's final velocity
A long rope is suspended from the ceiling. Waves are started from the bottom traveling up the rope, Do they get faster or slower? Explain why this occurs
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 75.1 dB. What is the total intensity level
A sledge loaded with bricks has a total mass of 17.2 kg and is pulled at constant speed by a rope inclined at 20.3° above the horizontal. What is the mechanical energy lost due to friction
a wooden box on a wooden table is pulled at constant speed by a 10n force at a 30 degree angle. what is the mass of the
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.0 g, which includes fuel mass of 12.3 g. What is the average exhaust speed of the engine
element 118 was reportedly synthesized in 1999 but the claim was later retracted. as a consequence of that experiment
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
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