PLEASE ANSWER CORRECTLY! Suppose you are using a system of units based on the centimeter (cm) for length, the gram (g) for mass, and the second (s) for time.

The kinetic energy that an object has because of its motion is equal to half its mass times its speed squared, or KE = 1/2 mv2.

In this system of units, what units would be used to express KE?

A. g. cm/s
B. g. cm/s
C. kg. cm² /s^2
D. g. cm² /s^2​

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒