A lawnmower engine running for 20 min does 4,560,000 J of work. What is the power output of the engine? (Power: P = W/t)

3800 W

228,000 W

91,200,000 W

547,200,000 W

When the lymphocytes are overwhelmed by a large amount of pathogens, what is the result? a. Lymph glands become swollen. b. More lymphocytes are released. c. The patient develops a fever. d. Phagocytosis is initiated.

A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. if the primary windings have 700 turns, how many turns are in the secondary windings? (voltage and number of turns are directly proportional.)

In useful fusion, smaller nuclei fuse together into larger nuclei and also produce : black hole entropy energy from vacuum fluctuations energy from excess mass free quarks

In the stable food chain shown below, what would you expect to happen initially if you were to suddenly double the population of rabbits?

Suchita sees this symbol shown in a circuit diagram. What is the purpose of the component represented by the symbol? to measure current to measure voltage to provide electrical energy to use electrical energy

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.

Does sound move as a longitudinal or transverse wave in a medium?