Two liquids are mixed and bubbles form. Is this a chemical or physical change? Explain.

A person consumes a snack containing 14 food calories (14kcal). what is the power this food produces if it is to be "burned off" due to exercise in 6 hours? (1 cal=4.186 J). A. 9763 W B. 2.7 W C. 0.6 W D ...0027 W

At what location in the refrigerator is the most thermal energy removed?

Which device transforms electrical energy to mechanical energy A. generator B. motor C. transformer D. magnet

Which one of these can be classified as an animal A) Bacteria B) Yeast C) Protozoan

What air pollution is and its rate of spreading worldwide?

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.