Adisa pulls a 35.0-N crate up a 4.00-m-long inclined plane at a constant velocity. If the plane is inclined at an angle of 39.0° to the horizontal and there is a constant force of friction of 13.0 N between the crate and the surface, what is the net change in potential energy of the crate?
a. 88 J
b. ?88 J
c. 109 J
d. ?109 J
e. None of these
a
You might also like to view...
A ring and a disk both at rest roll down a hill together. Which rolls slower?
A) ring B) disk C) depends on the masses D) both roll at the same speed E) need more information
A future use of space stations may be to provide hospitals for severely burned persons. It is very painful for a badly burned person on Earth to lie in bed. In a space station, the effect of gravity can be reduced or eliminated
With what period of rotation would a doughnut-shaped hospital of 200. m radius have to rotate, if persons on the outer perimeter are to experience 1/10 the gravity effect of Earth? A) 91. min B) 1.5 min C) 8.7 min D) 4.6 min E) 0.011 min
Which temperature scale has the smallest sized degrees?
A) Fahrenheit B) Celsius C) Kelvin D) none of the above
A 10-A current flows through a wire for 2.0 min. (e = 1.60 × 10-19 C)
(a) How much charge has passed through this wire? (b) How many electrons have passed any point in the wire? What will be an ideal response?