Asimple pendulum has a period of 15 seconds. what is the length of the pendulum in meters?

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Why do astronauts in the space shuttle weigh less?