Explain why machine can"t be

100% efficient practically?

Is the viscosity of air at North Pole = to it's viscosity at the equator? explain your answer.

An 800 kg car is moving at 32 m/s. What magnitude force is needed to bring that car to a stop in 30 seconds?

Hy would you expect sodium (Na) to react strongly with chlorine (Cl) ?

Question 10 2.5 pts Which example identifies a change in motion that produces acceleration? a speed skater moving at an increasing speed on a straight track a vehicle moving down a straight street at a steady speed a particle moving in a vacuum at

Which principle was a part of Aristotle's explanation of motion that Galileo corrected? The earth is flat Net force is equal to mass times acceleration Jupiter has moons Heavier objects fall faster than lighter ones

Which of the following describes a characteristic of a series circuit? There is more than one path for the electrons to take. There is at least one power source and at least one receiver. All parts of the circuit are connected one after the next.

If you push against a stationary brick wall for several minutes, you do no work A. on the wall. B. at all. C. Both of the above. D. None of the above.

Awave is traveling through X. What can be known about X? It is empty space. It is any medium. It is a solid It is a liquid.

Who wrote the mayflower compact?

In the formula for specific heat, which quantity is measured in units of J/g•°C? a - c b - Q c - T d - m