Rank in decreasing order the pressure that the italicized objects exert on the surface. I. A person standing with bare feet on the floor II. A person in skis standing on snow III. A person in Rollerblades standing on a road IV. A person in ice skates standing on ice Consider a person to be the same for each of the cases. Assume that skis, Rollerblades, and ice skates are massless.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate

What ia the energy of an object because of its potential and kinetic energies