A particular lever can lift a load with 80 percent efficiency. If 40 N of effort is applied 2.5 meters from the fulcrum, then what is the maximum load that can be lifted 1.5 m from the fulcrum?

A) 5333 N

B) 1920 N

C) 66.7 N

D) 53.3 N

What is gravity's role in friction

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Sustained exercise can increase the blood flow rate of the heart by a factor of five with only a modest increase in blood pressure. This is a large change in flow.

If the ball passes out of the field across the assistant referees and of a touchline and immediately returns to the field and play continues the assistant referee should signal by doing which of the following

One of the harmonics of a column of air in a tube that is open at one end and closed at the other has a frequency of 448 Hz, and the next higher harmonic has a frequency of 576 Hz. What is the fundamental frequency of the air column in this tube? a.

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A toll booth on a turnpike is open from 8:00 AM until midnight. Vehicles start arriving at 7:45 AM at a uniform rate of 6 veh/min. At 8:15 AM the rate drops to 2 veh/min.

A tornado lifts a truck 252 m above the ground. As the storm continues, the tornado throws the truck horizontally. It lands 560 m away from where it was picked up.

The force of attraction between 2 objects is called gravity. Why do you think that an object, like your notebook, pulled towards you? Explain your reasoning. I don't need the answer I just don't understand what this question is asking.

Two planes leave wichita at noon. One planes flies east 30m/h faster than the other plane, flying east at what time will they be 1200 mi apart?