Author Question: A heat pump will have an efficiency (heat out to electrical in) of about ________. a. 35 b. 50 c. ... (Read 46 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?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

For a complete list of videos, visit our video library