Karen and Randy are playing with a toy car and track. They set up the track on the floor, where the apparatus on the far left is used to launch the car forward by pressing down on the top portion. After the car is launched, it follows the track and continues upward, leaving the track. If the car has a mass of 211 g and it reaches a maximum vertical height of 2.67 m above the floor, what was the speed of the car while it was moving along the floor? Ignore the effects of friction and air resistance. m/s
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An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices
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Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?
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An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
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Karen and Randy are playing with a toy car and track. They set up the track on the floor, where the...
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