Physics
Physics, 16.04.2020 23:18, greend0719

3. A 420-kg piano slides 3.25 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Determine: a. The force exerted by the man. (10pts) b. The work done on the piano by the man. (10pts) c. The work done on the piano by the force of gravity. (10pts) d. The net work done on the piano. Ignore friction. (10pts)

answer
Answers: 1

Other questions on the subject: Physics

image
Physics, 21.06.2019 17:40, blythephillips2734
Sarah and michelle work at a tech company that designs exercise apps. sarah tells michelle she has heard that james, their supervisor, interviewed with a competitor and may be leaving the company, which would open up a management position. what kind of power is sarah exerting?
Answers: 1
image
Physics, 21.06.2019 19:30, Fangflora3
11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?
Answers: 1
image
Physics, 22.06.2019 11:10, axxpjr12
Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.
Answers: 3
image
Physics, 22.06.2019 13:30, kuddlebugsmommy
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Do you know the correct answer?
3. A 420-kg piano slides 3.25 m down a 30° incline and is kept from accelerating by a man who is pus...

Questions in other subjects:

Konu
Spanish, 04.02.2020 18:47
Konu
Biology, 04.02.2020 18:47