subject
Physics, 02.03.2021 06:40 michellecr20057

1. A sailboat moves north for a distance of 20.0 km when blown by a wind from the exact southwest with a force of 3.50 x 10^4 N. The sailboat travels the distance in 2.5 h. a) How much work was done by the wind? b) What was the wind’s power? Your response should include all of your work and a free-body diagram. 2. A worker applies 170 N of force on a lever to lift a 1250 N crate 0.10 m. a) If the lever is 100% efficient, how far does he need to push his side? Your response should include all of your work.

3. A sailor pushes a 160.0 kg crate up a ramp that is 2.50 m high and 15.0 m long onto a loading dock. He exerts a 620.0 N force parallel to the ramp. a) What is the mechanical advantage of the ramp? b) What is the efficiency of the ramp? Your response should include all of your work and a free-body diagram.

ansver
Answers: 2

Other questions on the subject: Physics

image
Physics, 21.06.2019 22:30, blessing5266
Distinguish between a transverse wave and a longitudinal wave.
Answers: 1
image
Physics, 22.06.2019 06:30, bluevibe
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
image
Physics, 22.06.2019 10:30, jadenp23
Which two particles are found in the center of an atom
Answers: 1
image
Physics, 22.06.2019 13:30, brsglover8355
6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
You know the right answer?
1. A sailboat moves north for a distance of 20.0 km when blown by a wind from the exact southwest wi...

Questions in other subjects:

Konu
Social Studies, 02.07.2019 03:30
Konu
English, 02.07.2019 03:30
Konu
Biology, 02.07.2019 03:30