Three masses are rigidly attached to a light board in the xy-plane. A 2kg mass is at (-4m, 2m), a 3kg mass is at (0,-6m) and a 5kg mass is at (3m, 0). If it is rotated about the y-axis at 1.4rad/s, then what is its rotational kinetic energy?

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

It's time for santa to deliver his presents. assuming he delivers presents all over the world, he has to travel about 75,000,000 miles. if he travels east to west, he can use the time zones to make christmas day last 31 hours. what speed, in miles per hour, must santa fly to get all of his presents delivered?