Physics, 24.02.2021 03:20 Enewton4454
A 40-kg girl is running through the supermarket and jumps onto a stationary cart full of groceries that has a total mass of 80-kg. They roll away at a speed of 7 m/s. How fast must she have been running before the collision?
Answers: 1
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?
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Physics, 22.06.2019 12:00
In an experiment, how can i change human errors? be specific.
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Physics, 22.06.2019 15:00
Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost
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Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
A 40-kg girl is running through the supermarket and jumps onto a stationary cart full of groceries t...
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