Physics, 13.09.2019 00:30 quynhnguyen7454
Alice drops a rock down from a 40 meter tall building (valice, i = 0) at the same time that bob (lying on the ground) throws a rock straight upwards from the ground with vbob, i = 20 m/s. at what height do the rocks pass each other?
Answers: 3
Physics, 22.06.2019 11:30
A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
Answers: 2
Physics, 22.06.2019 12:00
Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter
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Physics, 22.06.2019 17:40
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Alice drops a rock down from a 40 meter tall building (valice, i = 0) at the same time that bob (lyi...
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