21. Whether or not a scientists hypothesis is supported or contradicted, the scientists still has to explain what exactly happened in an experiment when this situation occurs the scientist is described as being

a. untruthful
b. pseudo
c objective
d. horrible

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

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