Answer:
False.
Explanation:
No. Voltage does not alternate between zero and positive or negative. In non return signaling (NRZ) voltage at zero represents the 0 bit and at the positive represent the 1 bit. NRZ is one of the signal levels of uni polar Scheme in which the signal does not return to zero at the middle of it. For example 10110. That is why it named as the non return signaling.
the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
Asteroids do this because of Newton's Third Law. When a asteroid hits something, it will keep on moving (spinning) until it hits something else.
-12 = 6.2*t - 4.9*t² → t = 2.32 sec (quadratic formula)
<span>V = Vi -g*t = 6.2 - 9.8*2.32 = -16.5 m/s</span>
