Physics, 10.09.2021 01:00 kennedy3076

24. You and two friends apply a force of 425 N to push a piano up a 2.0 m long ramp.
a. Work How much work, in joules, has been
done when you reach the top of the ramp?
b. Power If you make it to the top in 5.0 s,
what is your power output in watts?
c. Mechanical Advantage If lifting the piano
straight up requires 1,700 N of force, what is
the mechanical advantage of the ramp?

Answers: 3

Show answers

Another question on Physics

Physics, 21.06.2019 18:20

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Answers: 1

Answer

Physics, 21.06.2019 18:20

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter 1.8 mm. (a) determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of 550 w. the pellet has an absorptivity 0.3 and emissivity 0.8.

Answers: 2

Answer

Physics, 22.06.2019 06:00

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

Answers: 1

Answer

Physics, 22.06.2019 17:40

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

Answers: 2

Answer

You know the right answer?

24. You and two friends apply a force of 425 N to push a piano up a 2.0 m long ramp.
a. Work...

Questions