Physics, 11.07.2019 05:10 abbygriffin2009
A0.300 kg balloon is filled with helium until the volume of the balloon is 1.50m^3. the density of the contained helium is 0.178 kg/m^3, and the density of the surrounding air is 1.29 kg/m^3. what downward force must be applied to the balloon to prevent it from rising?
Answers: 1
Physics, 21.06.2019 16:30
Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer
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Physics, 22.06.2019 02:30
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?
Answers: 1
Physics, 22.06.2019 14:30
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
Answers: 2
Physics, 22.06.2019 15:50
The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?
Answers: 2
A0.300 kg balloon is filled with helium until the volume of the balloon is 1.50m^3. the density of t...
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