7. A bob of mass 200 gram is whirled in a horizontal circle of radius 50 cm by a string inclined at 30°. Calculate tension on the string and speed of bob.​

Identify the forces that contribute to the centripetal force on the object in each of the following examples: a. a bicyclist moving around a flat, circular track b. a bicycle moving around a flat, circular track c. a racecar turning a corner on a steeply banked curve

What object a collides with object b and bounces back its final momentum is?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?