A block weighing 50.0 newtons is on a ramp inclined at 45.0° to the horizontal. A 20.0-newton force of friction, F1, acts on the block as it is pulled up the ramp at constant velocity v with a force F2 that is parallel to the ramp, as shown in the diagram below. What is the magnitude of force F2?

A. 49.5 N
B. 55.4 N
C. 367 N
D. 486 N

this is a good question! i'll do some research and come back when i have the answer!

i think the answer would be reserve.

snell's law

refractve index = sin incidence / sin refraction

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation