Physics, 28.10.2020 16:50 shongmadi77
A playground merry-go-round has a radius R and a rotational inertia I. When the merry-go-round is at rest, a child with mass m runs with speed v along a line tangent to the rim and jumps on. The angular velocity of the merry-go-round is then:
Answers: 3
Physics, 22.06.2019 21:30
Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
Answers: 3
Physics, 23.06.2019 14:50
When oxygen reacts with hydrogen, it has the capacity to release 29 kilojoules of energy. inside a fuel cell, oxygen reacts with hydrogen to produce 23 kilojoules of useful energy. the rest of the energy is lost as heat. what's the efficiency percentage of the fuel cell?
Answers: 1
Physics, 23.06.2019 20:30
Aspacecraft left earth to collect soil samples from mars. which statement is true about the strength of earths gravity on the moving spacecraft? a.) it decreases b.) it increases c.) it remains the same d.) it doesnโt affect the spacecraft
Answers: 1
Physics, 23.06.2019 22:50
10 pts. if an electromagnetic wave has a frequency of 8 โ
10^14 h z , what is its wavelength? use ฮป=v/f. the speed of light is 3 โ
10^8 m/s.
Answers: 1
A playground merry-go-round has a radius R and a rotational inertia I. When the merry-go-round is at...
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