Think of a time you had trouble falling asleep. Why do you think you were having trouble? Brainstorm 2 strategies to help yourself fall asleep when you’re having trouble.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

How many times did thomas edison mess up the light bulb

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?