Heat engine uses thermal energy flowing from a heat source that is 225 K to a cold sink that is 50 K. What is the approximate efficiency of the heat engine?

When you exercise, an area of the brain called the pituitary gland releases chemicals into your bloodstream called

Where is the sun rays strike earth most directly and least directly

Do you get the same answer if you drive 1.0x10²km at each of the two speeds

Describe how the sun provides the energy that causes convection in the atmosphere and produces winds

Which of the following restricts the movement of charge

3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law