10) The weight of an object can be described as the pull, or force, of gravity on it. This force is given by the mass of the
object times the acceleration due to gravity, F=mg. The acceleration due to gravity, g, is a constant with a value of
9.81 m/s?. Calculate the weight due to gravity in Newtons of an object that is 4.69 lbs.
A)
0.217 N
B)
11.5 N
20.9 N
Х
D)
46.0 N

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

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 ⇒

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia