1 point A constant electric field is (4.5 x
105 N/C)ý. In which direction is
the force on a -20 nC charge
placed in this field? *

What is magnetic flux? explain faraday's law of induction.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

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