In order for an object to conserve it's total mechanical energy it is absolutely necessary that?

Visible light is an example of a. chemical energy. b. electrical energy. c. electromagnetic energy. d. nuclear energy.

Find the change in internal energy of a system which receives 70 J of heat from its environment and does 20 J of work. Select one: a. 90 J b. 50 J c. Zero d. - 70 J

you are trying to figure out the voltage of a battery when you know the current and the resistance. the current (i) is 25 Amps, and the resistance (R) is 10 ohms. Use the right form of I=VIR

How can I feel pain when I hit a table with my bare hands (Physics)

Which of the following is not an advantage that attractive people enjoy in interpersonal relationships? A. being perceived as more popular B. being perceived as more intelligent C. being perceived as more honest D. being perceived as more successful

Why are galaxies visible

I hockey puck slides across an ice rink more easily than it does across a rough concrete surface why is this

Sodium-22 Sodium-25 # of protons # of neutrons # of electrons

As the particles of a solid undergo sublimation, they A: lose energy B: move closer to one another C: change temperature D: move farther apart from one another

the math club must order 35 new uniform shirts. There are 5 more girls than twice the number of boys in the club. How many of each uniform type should the club order