Awheelbarrow can be used to lift a load, such as a pile of dirt, and then push the load across a distance.

which simple machines make up a wheelbarrow?

a pulley and an inclined plane
a wheel and axle and a lever
a pulley and a wheel and axle
a lever and a wedge

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

The strong nuclear force acts over a small distance than the electrostatic force. true or false