Which of the following would cause the force of kinetic friction to increase? a. a decrease in k b. an increase in s c. a decrease in the normal force d. an increase in the normal force

Four potential forces can act on the ball. which combination of forces will keep the ball in static equilibrium? the length of the arrows represents the magnitude of the force.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.