Abox at rest on a ramp is in equilibrium, as shown.
what is the force of static friction acting on the box?
round your answer to the nearest whole number.
n
what is the normal force acting on the box? round your
answer to the nearest whole number.
n
20
f = 735 nk

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

What are similarities and differences between refraction, reflection, diffraction and absorption?

Use the information presented in the graph to answer the questions. which segments show acceleration? which segment indicates that the object is slowing down? what is the velocity of segment b? what is the acceleration of segment b?