a ball is swung in a vertical circle at the end of a string. Assuming that the total energy in the ball-earth system remains constant, show that the tension in the string at the bottom is greater than the tension at the top by 6 times the weight of the ball. Note that the radius of the circle does not affect this answer

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is