Which qualities should an experiment have to be replicable and valid? Check all that apply

A. clearly detailed results

B. a well cited research paper

C. one tested variable

D. trials conducted in a laboratory

E. a list of the steps taking in the experiment

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

In a system, when potential energy decreases, then entropy also decreases. true false