A150 w driveway light produces 9.3 × 104
j of light energy
over a 4.0 h period. if the l...
Physics, 22.09.2019 10:30, seasmarie75
A150 w driveway light produces 9.3 × 104
j of light energy
over a 4.0 h period. if the light uses 2.06 × 106
j of energy in
the 4.0 h, then what is its efficiency? show all your work.
Answers: 1
Physics, 22.06.2019 17:00, griffinkiley22
Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?
Answers: 2
Physics, 23.06.2019 13:20, toxic12396green24
Paul and ivan are riding a tandem bike together. they’re moving at a speed of 5 meters/second. paul and ivan each have a mass of 50 kilograms. what can paul do to increase the bike’s kinetic energy?
Answers: 2
Physics, 23.06.2019 18:30, trinitymarielouis
What is required to bring about a phase change 1.an increase or decrease in pressure 2.an increase or decrease in energy 3.an increase in energy only 3.a decrease in energy only
Answers: 1
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