What is the spring constant for a spring that stretches by 27 cm when a load of 200 N is suspended from it? 0.135 N/m
54 N/m
740 N/m
O 7.4 N/m

Abug is 12 cm from the center of a turntable that is rotating with a frequency of 45 rev/min . what minimum coefficient friction is required so that the bug stays on the turntable?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?