Assume that the comet has a total mass of 4.2×1012 kilograms. what is its total kinetic energy? (hint: the kinetic energy is equal to 12mv2, where m is the comet's mass and v is its speed. if you use mass in kilograms and velocity in m/s, the answer for kinetic energy will have units of joules.)

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

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?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?