Calculate the total heat content of 10 kg of ice at -23°C. (Hint: A substance at absolute zero, -273° C, has O heat content.) Be mindful of significant figure rules for both multiplication and addition.
115 kcal
1400 kcal
1500 kcal
1300 kcal

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.

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.

Properties seen when one one substance changes to another are known as properties