A simple pendulum with length L is swinging freely with small angular amplitude. As the pendulum passes its central or equilibrium position, its cord is suddenly and rigidly clamped at its midpoint. In terms of the original period of the pendulum T, what will the new period be?

The air that we breath is made mostly of which gaseous molecule

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:

2. circled insects have mutations, or changes to their dna. how many of the offspring insects in this generation have mutations?