An object is positioned in front of the focal point of a concave mirror. Choose the ray diagram that shows the proper positioning of the image.

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in