Two astronauts push on a satellite. One pushes in the positive x-direction with a force of 42N, and the other pushes in the positive y-direction. If the net force is at an angle of 15° above the positive x axis, what is the magnitude of the second astronaut’s force? Write the known and unknown from the problem, the formula, then solve.

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

What object a collides with object b and bounces back its final momentum is?