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.
Answers: 2
Physics, 22.06.2019 22:00
If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?
Answers: 1
Physics, 22.06.2019 22:30
An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. what is the voltage in the circuit? a.1.4 volts b.0.71 volts c.14 volts d.46 volts
Answers: 2
Physics, 22.06.2019 23:30
Forms of meditation hail from which traditions a ) eastern traditions b ) western traditions c ) eastern and western traditions d ) neither eastern nor western traditions
Answers: 1
1. A sailboat moves north for a distance of 20.0 km when blown by a wind from the exact southwest wi...
Mathematics, 06.07.2019 14:20
History, 06.07.2019 14:20
English, 06.07.2019 14:20
Mathematics, 06.07.2019 14:20
Biology, 06.07.2019 14:20
Mathematics, 06.07.2019 14:20
Biology, 06.07.2019 14:20
Biology, 06.07.2019 14:20