Author Question: A heat pump will have an efficiency (heat out to electrical in) of about ________. a. 35 b. 50 c. ... (Read 26 times)

CQXA

  • Hero Member
  • *****
  • Posts: 546
A heat pump will have an efficiency (heat out to electrical in) of about ________.
 a. 35 b. 50 c. 75 d. 100 e. 200

Question 2

A track star in the broad jump goes into the jump at 12 m/s and launches himself at 20 above the horizontal. How long is he in the air before returning to Earth?



tandmlomax84

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

e

Answer to Question 2

0.84 s



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

For a complete list of videos, visit our video library