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A Styrofoam cup holding 90 g of hot water at 95°C cools to room temperature, 23.0°C. What is the change in entropy of the room? Neglect the specific heat of the cup and any change in temperature of the room.
One particle has a mass of 2.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
You have decided to make a large cooler to store meat. Calculate the net rate of heat flow per second out of the cooler if the interior temperature is 5 C and the exterior temperature can be 45 C
A golf ball strikes a hard, smooth floor at an angle of 20.6 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0298 kg, and its speed is 34.6 m/s just before and after striking the floor. What is the magnitude of t..
A solid, horizontal cylinder of mass 10.5 kg and radius 1.14 m rotates with an angular speed of 7.23 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
Two moles of an ideal gas undergo a reversible isothermal expansion from 3.10×10^?2m^{3} to 5.00×10^?2m^{3} at a temperature of 27.0C. What is the change in entropy DeltaS of the gas
The eye is most sensitive to light having a frequency of 5.45 1014 Hz, which is in the green–yellow region of the visible electromagnetic spectrum. What is the wavelength of this light? m
The electron and positron have the same velocity. What is the kinetic energy of the electron
If the coefficient of static friction between your coffee cup and the horizontal dashboard of your car is µs = 0.800, how fast can you drive on a horizontal roadway
An unbanked circular highway curve on level ground makes aturn of 90 degrees. What is the minimum length of the curve in miles
The flywheel of an engine has a moment of inertia 2.80 {rm kg} cdot {rm m} ^ {2} about its rotation axis. What is its final kinetic energy.
If atmospheric pressure is 29.5 feet of water, what is the pressure in bars at the bottom of a 3 meter deep swimming pool
An object 0.520cm tall is placed 17.0cm to the left of the vertex of a CONVEX spherical mirror having a radius of curvature of 24.0cm. Calculate the size of the image
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