a horizontal force of 300.0N is required to push a 900.0 N crate across the floor at a constant speed. Find the coefficient of sliding friction.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

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