Apan of water is placed on the stove and heated. the initial temperature of the water is 20 degree celsius. the final temperature is 42. how much energy is required to heat 100 g of water if water has a specific heat of 4.190 j/gk?

Which accurately compares concave and convex lenses?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

The total amount of energy contained in an object