Classify each of the following changes as chemical or physical: crushing physical rock adding antifreeze to a car radiator scorching butter chemical physical

When 56 J of heat are added to 11 g of a liquid, its temperaturerises from 10.4oC to 12.7oC. What is the heat capacityof the liquid?

137 kJ to Calories.

Which has the greater kinetic energy, Object 1 with a mass of 2.9 kg and a velocity of 0.71 m/s or Object 2 with a mass of 1.3 kg and a velocity of 2.2 m/s? KE of Object 1 = J KE of Object 2 =| J |has greater kinetic energy. Object 1 Object 2 Retny Entire Groun O more aroun attempts remaining

Consider the two spheres shown here, one made of silver andthe other of aluminum. (a) What is the mass of each spherein kg? (b) The force of gravity acting on an object is F = mg,where m is the mass of an object and g is the acceleration ofgravity (9.8 m/s2). How much work do you do on each sphereit you raise it from the floor to a height of 2.2 m? (c) Does theact of lifting the sphere off the ground increase the potentialenergy of the aluminum sphere by a larger, smaller, orsame amount as the silver sphere? (d) If you release thespheres simultaneously, they will have the same velocitywhen they hit the ground. Will they have the same kineticenergy? If not, which sphere will have more kinetic energy?[Section 1.4]

Kinetic energy is best characterized by heat transferred from a hot object to a cool one O energy contained in a chemical compound energy stored in a battery O relative position of particles a 99+

how many calories correspond to 28.4 J?

If calorie raises the temperature of 1ml of water by 1ºC, how many calories are needed to raise the temperature of 50 ml of water by 1ºC?

3. The "Farmhand Cut" of prime rib at Farmer Browns Steak House weighs in at 20 ounces, of which 6.0 ounces is good old Nebraska beef fat. A person on a 2400 calorie per day diet should not consume more than 800 calories from fat. If fat contains 9.0 calories per gram, is this steak within the 800 calorie limit?

if a candy bar co0ntain 345 calories how many kcal is this