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A 2.7-kg copper block is given an initial speed of 2.5 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest.
a) If the block absorbs 85% of its initial kinetic energy as internal energy, compute its increase in temperature.
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg•m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N. Find out the effe..
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 x104 m/s, and the radius of the orbit is5.05 x 106 m. Asecond satellite also has a circular orbit around this same planet. The orbit of this second satell..
A Projectile (Mass M) is launched at an angle (theta) with an initial speed u. Write expressions for angular momentum (L) and torque vectors (T) about the launch point. hence show that dL/dt = T. Assumptions: No Air Resistance and constant gravity
a small conductive rod of length 1.5 m moves with a constant velocity v14 ms in a direction parallel to a long wire
An irregularly shaped piece of metal has a weight of 8.840 N. It is suspended from a scale, which reads 7.320 N when the piece is submerged in water
q1. a rectangular container measuring 23 cm 51 cm 65 cm is filled with water. what is the mass of this volume of water
Water in a pipe runs down a 20 m high hill. If the speed of the water on the top of the hill is 5.0 m/s and its pressure is 150 kPa, what is the pressure of the water at the bottom of the hill
Consider a stack of paper 3.0 meters high. each sheet of paper is the stack has a thickness of 0.01 centimeter
Mary Healy, the young woman with severe vaginal bleeding, is admitted to emergency room. She is three months pregnant, and physician is concerned about the volume of the blood she is losing.
1 there are two charges q1 0.00010c and q2 -0.00010c both located on the x axis at -0.10m 0.00m notation x position y
A solar water heater for domestic hot-water supply uses solar collecting panels with a collection efficiency of 47.0% in a location where the average solar-energy input is 200 W/m^2...... If the water comes into the house at 15.0C and is to be heated..
A proton is located at the origin, and a second proton is locatedon the x-axis at x = 5.12 fm (1 fm = 10-15 m). Use conservation of energy to calculate the speed of the alphaparticle at infinity.
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