A scientist observed two basketballs roll and collide with each other. One was a 2.0 kg basketball traveling at a speed of 0.60 m/s north and the other was a 4.0 kg basketball traveling south at a speed of 0.90 m/s. After the collision, the final velocity of the 4.0 kg basketball is 0.50 m/s north, find the final velocity of the 2.0 kg basketball?

What is the frequency of a light wave with a wavelength of 620nm

Matter that emits no light at any wavelength is called

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j