A crane accelerates a 15 kg load upward. The tension in the cable is 640 n. Find the magnitude and direction of the elevator's acceleration. thank yo~

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.