HELP!! Which two units of measurement are commonly
used to measure heat?
A. calorie and joule
B. joule and degree Celsius
C. calorie and degree Celsius
D. degree Celsius and degree Fahrenheit

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Ahockey player of mass 82 kg is traveling north with a velocity of 4.1 meters per second he collides with the 76 kg player traveling east at 3.4 meters per second if the two players locked together momentarily in what direction will they be going immediately after the collision how fast will they be moving