As you take your leisurely tour through the solar system, you come across a 1.45 kg rock that was ejected from a collision of asteroids. your spacecraft's momentum detector shows a value of 1.93 x 108 kg. m/s for this rock. what is the rock's speed?

What happens to atoms and chemical bonds during a reaction?

Afixed electric space heater wired by a cable with an ampacity of 30 a should draw a maximum current of a. 30 a. b. 24 a. c. 15 a. d. 27 a.

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?