at which point should a researcher inform the respondents about the use of deception in a psychological study ? ?

a.
at the start of the study
b. at the end of the study
c. after publishing the study
d. during the course of the study

How is it possible that the same amount of work could be done pushing identical objects two different distances?

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane

Refrigerant 134a enters a well-insulated nozzle at 160 lbf/in.2, 220f, with a velocity of 110 ft/s and exits at15 lbf/in.2 with a velocity of 1350 ft/s. for steady-state operation, and neglecting potential energy effects, determine the exit temperature, in f.