With simple harmonic motion, the reciprocal of the period is called the frequency. The frequency, given by f = 1/period represents the number of cycles (or oscillations) that are completed per unit time. The units used to describe frequency are Hertz, where 1 Hz = 1 cycle per second. In one country, the voltage of the alternating current coming through an electrical outlet can be modeled by the function V = 240 sin (130πt), where t is measured in seconds and V in volts. What is the frequency of the voltage?

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.