A student attaches a rope to a brick and pulls the brick across a rough surface at a constant speed. The forces that should be included in a free body diagram for the brick are: A) force of friction
B)normal force
C) gravity
D) tension force

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

Which atomic model was proposed as a result of j. j. thomson’s work?

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