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1. Suppose it is a very hot summer day and you want to cool your kitchen. Unfortunately the windows and doors in your kitchen cannot be opened. You have either a fan or a refrigerator to cool the kitchen. Which do you believe would be more effective to cool the room? (Hint: think about how a refrigerator works. Heat does not magically go away when the refrigerator is cooling the foods inside of it.)
2. Explain your answer then try testing your theory.
The mass of a certain planet is 6.93×1023 kg, and its radius is 1111 km. What is the acceleration due to gravity on the planet's surface
A spring stretches 0.150 when a 0.300 kg mass is hung from it. The spring is then stretched horizontally 0.100m from its equlibirum point and released. determine maximum acceleration of mass
A large wooden turntable in the shape of the flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3 {rm rad}/{rm s} about a vertical axis through its center.
Assume 2500J of heat are added to 2.2mol of argon gas at a constant pressure of 120 kPa. Suppose that the argon can be treated as an ideal monatomic gas. Discover the change in internal energy. 1247J wrong
Use the MaxwellBoltzmann equations for a diatomic molecule and attempt to predict the coefficients of the first two terms (i.e., 0.3598 and 47.81) of the equation-
one end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft of depth 85.0m . the rope
An 11.2 kg box is pulled at a constant velocity across a rough level floor by a 317 N force F directed 23.5o above the horizontal, through a displacement x of 5.65 m. How much net work is done on the box
suppose you throw a 0.053-kg ball with a speed of 11.3 ms and at an angle of 31.5deg above the horizontal from a
The mass density of an object is 16.0 g/cc, and its mass is determined to be 134 g. What is the volume of the object
a 100 muf capacitor wired in a simple series rc circuit is initially charged to 10 muc and then discharged through a 10
a charge of 18 nc is uniformly distributed along a straight rod of length 3.0 m that is bent into a circular arc with a
A uniform electric field of magnitude 290 V/m is directed in the positive x direction. Determine what the change in the potential energy of the charge field system
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