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A 1/2 kg block of aluminum is heated to 200 C. It is quickly placed in an insulated tub of water at 0 C and sealed. It all comes to equilibrium at 20 C. What is the mass of the water? Specific heats of Al is 900 J/kg C and water is 4186 J/kg C.
A 4.0 kg ball is on the end of a 1.6 m rope which is fixed at O. The ball is held at point A, with the rope horizontal, and is given an initial downward velocity. What is the initial velocity of the ball
A monatomic gas is adiabatically compressed to 0.500 of its initial volume. How do each of the following quantities change The molar specific heat at constant volume
an insulated wire of diameter 1.0mm and negligible resistance is wrapped tighly around a cylindrical core of radius
A 100-g piece of metal initially at 100 C is placed in a 250 gof water contained in a 300-g aluminum vessel initially at 20.o C. what is the specific heat of the unknown piece of metal
A baseball outfielder throws a 0.150-kg baseball at a speed of 40.4 m/s, What is the kinetic energy of the baseball at the highest point of its trajectory
Stone with a mass of 0.800 {rm kg} is attached to one end of a string 0.900 {rm m} long. The string will break if its tension exceeds 65.0 {rm N}. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string rem..
A bat, moving at 5.56m/s, is chasing a flying insect where the speed of sound is assumed to be 340m/s. what is the speed of the insect
A solid has a volume of 8cm3. When weighed on a spring scale calibrated in grams, the scale indicates 20g. What does the scale indicate if the object is weighed as immersed in a liquid of density 2g/cm3.
What is volume concentration
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
a car sits in an entrance ramp to a freeway waiting for a break in the traffic. the driver sees a small gap between a
200 Btu are transported into a system via a work mode and 75 Btu are removed via heat transfer mode. Determine the net energy gain for this system
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