Here is my question in physics : I have the info about frequency of pendulum, and its maximum angle.
How do I calculate the speed of the ball in the pendulum?

Awind turbine is initially spinning at a constant angular speed. as the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.173 rad/s2. after making 2870 revolutions, its angular speed is 132 rad/s. (a) what is the initial angular velocity of the turbine? (b) how much time elapses while the turbine is speeding up?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount