The Y component of the vector 22/km at 50 degrees is: A). 16km
B). 26km
C). 15km
D). 14km

Please show work

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?