How does acceleration measure. A. change in speed over time B. Change in displacement overtime
C. Change in distance over time
D. Change in velocity over time

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.