Asperm whale can accelerate at about 0.110 m/s20.110 m/s2 when swimming on the surface of the ocean. how far will a sperm whale travel if it starts at a speed of 0.800 m/s0.800 m/s and accelerates to a speed of 2.05 m/s2.05 m/s ? assume the whale travels in a straight line.

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Would it be correct to say the doppler effect is the apparent change in the speed of a wave due to the motion of the source? be sure to fully explain your position using at least 3 complete content related sentences.