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A 150g copper bowl contains 220g of water, both at 20 degrees Celsius. A very hot 300g copper cylinder is dropped into the water, causing the water to heat, by 5g being converted to steam. The final temperature of the system is 100 degrees Celsius. Neglect energy transfers by the environment. (c) What is the original temperature of the cylinder?
A 40 kg skateboarder (Ms) on a 3 kg board (Mb) is training with two 5 kg weights (Mw). How fast is he propelled in the opposite direction after the weights are thrown
An ideal refrigerator maintains a temperature of 8c inside it, whereas in the kitchen the temperature is 25c. find te energy ejected into the kitchen
At what distance along the central axis of a ring of radius R = 0.100 m and uniform charge is the magnitude of the electric field due to the ring's charge maximum
Ball bearings are made by letting spherical drops of molten metal fall inside a tall tower -- called a shot tower -- and solidify as they fall. If a bearing needs 3.1 s to solidify enough for impact, how high must the tower be
Your new super power Heat-O-Matic insulated blender has both a violent chopping blade and a heating element, what amount of heat flowed into the water from the heating element
Water flows through a 4 cm diameter pipe at 4 m/s and with a gauge pressure of 2 atm. what will be the pressure in the narrower pipe
A beam of light strikes a sheet of glass at an angle of 57.0deg. with the normal in air. You observe that red light makes an angle of 38.1 degrees with the normal in the glass, What are the speeds of red and violet light in the glass
question an aluminum baseball bat has a length of 0.81 m at a temperature of 20degc. when the temperature of the bat is
At high noon, the Sun delivers 1.10-kW to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature?
A coil is wrapped with 300 turns of wire on the perimeter of a circular frame (radius = 8.0 cm). Each turn has the same area, equal to that of the frame. A uniform magnetic field is turned on perpendicular to the plane of the coil.
A potential difference of 5.80 V will be applied to a 35.00 m length of 18-gauge tungsten wire, Calculate the rate at which thermal energy will appear in the wire
A particle moves along the x axis according to the equation x = 50t + 10t2, where x is in meters and t is in seconds. (a) Calculate the average velocity of the particle during the first 3.0 s of its motion. ? m/s (b) Calculate the instantaneous veloc..
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