An apple is kept inside a glass jar. The lid of the jar is screwed on tightly and tape is stuck along the edge of the lid, sealing the jar. The jar (with the apple) is weighed and the weight (W1) is noted. It is kept on a table undisturbed. After a week, the apple has rotted and has shrunk. Now the jar (with the apple) is weighed again (W2). Which of the following is true about the two weights of the jar with the apple, i. e. W1 and W2? * (1 Point) O 1.Both weights(W1 and W2) are the same.

2. Weight taken before rotting (W1) is less than the weight taken after rotting.

3. Weight taken before rotting (W1) is more than the weight taken after rotting.

4. We cannot say unless we know the actual values.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential

Which type of energy is transferred by convection currents?