16. In single-slit diffraction, the central band gets thicker as the distance to the screen increases. True False

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?