Which of the following woud be expected to have the greatest impact on primary productivity? a chemical energy b nutrient availability c solar energy d water availability

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?