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A metal container, which has a mass of 8.4 kg contains 15.3 kg ofwater. A 2.1-kg piece of the same metal, initially at a temperatureof 160.0°C, is dropped into the water. The container and thewater initially have a temperature of 15.4°C and the final temperature of the entire system is 17.4°C. Calculate the specific heat of the metal.
A box of bananas weighing 44.0N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.500, and the coefficient of kinetic friction is 0.300.
electrons produced by a certain device are observed to travel in a circular path with a radius of 2.0 cm when placed in
describe the various ways that you encounter and utilize different em radiation in your daily life.original work
A nonuniform, horizontal bar of mass 3.43 is supported by two massless wires against gravity. The left wire makes an angle 36.6 , with the horizontal, and the right wire makes an angle 62.9 .
A copper wire is 10.00 m long and has a cross-sectional area of 1.00 x10-4 m2. This wire forms a one turn loop in the shape of a square and is then connected to the battery that applies a potential difference of 0.200 V.
A grinding wheel in the shape of a solid disk is0.240 {\rm m} in diameter and has a massof 2.50 {\rm kg}. The wheel is rotating at2050 {\rm rpm} about an axis through itscenter. What is its kinetic energy?
A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 m/s2. what is the mass of the lamp
On a brisk walk, a person burns about 380 Cal/h. At this rate, how many hours of brisk walking would it takes to lose a pound ofbody fat? ( A pound of body fat stores an amount of chemical enegy equivalent to 3500 Cal.)------h
Consider a single electron, with a mass of 9.1×10?31kg , subject to a single force equal to the weight of a penny, 2.5×10?2N
An unknown element of mass 0.250 kg, initially at 95.0°C, is dropped into 0.400 kg of water (c = 4186 J/(kg•°C)) at 20.0°C contained in an insulated cup of negligible mass and specific heat
A farsighted person uses glasses with a refractive power of 3.3 diopters. What is this person's near point when not wearing glasses
a 25-kg iron cannonball is fired with speed 220 m/s. If it hit a concrete wall, how much does the temperature of the cannonball increase
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