PLEASE HELP 50 POINTS 9TH GRADE PHISICS ANYONE FROM K12 OR IF YOU HAVE DONE THIS PROJECT CAN YOU HELP ME WITH THE SECOND PART ON PULLEYS PLEASE HELP.

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.