If a 0.6kg object hanging from a spring stretches it by 0.15 m, then by how much will the spring be stretched(in m) if a 1.2 kg object is suspended from it?

In a series circuit the __ is the same at every point

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Photons with the highest energy have the longest period