Trevor is pulling his younger brother in a wagon. he pulls the wagon 50 m to the corner with a force that is a parallel with the ground. he then turns the wagon around and pulls it 50 m back to the starting point with the same force at an angle of 30 degrees with respect to the ground. how does the amount of work trevor performs going to the corner compare with the amount of work he performs coming back?
a) they are the same because he uses the same amount of force
b) they are the same because he travels the same distance
c) he does less work coming back because the force moving the wagon is only 50cos30
d)he does more work coming back because the force moving the wagon is only 50cos60
Answers: 3
Another question on Physics
Physics, 23.06.2019 02:30
If jason ii needs 15 kw of power at 300 volts to operate, what amperage of current must flow through the cable?
Answers: 2
Physics, 23.06.2019 03:00
Suppose the house in question 3 is located in cleveland where the annual average solar flux is 160 w/m2 . if 10 m2 of solar panels operating at 20 percent efficiency were installed on this house to collect and store solar energy in the form of hot water:
Answers: 2
Physics, 23.06.2019 09:00
Why did thomson's results from experimenting with cathode rays cause a big change in specific thought about atoms ?
Answers: 2
Physics, 23.06.2019 13:30
Tsunamis are fast-moving waves often generated by underwater earthquakes. in the deep ocean their amplitude is barely noticeable, but upon reaching shore they can rise to an astonishing height of a six-story building. one tsunami generated off the aleutian islands in alaska, had a wavelength of 897km and traveled a distance of 3280km in 4.18h. (a) what was the speed (in m/s) of the wave? find the waves (b) frequency and (c) period.
Answers: 1
You know the right answer?
Trevor is pulling his younger brother in a wagon. he pulls the wagon 50 m to the corner with a force...
Questions
Mathematics, 29.08.2020 22:01
Geography, 29.08.2020 22:01
Computers and Technology, 29.08.2020 22:01
