This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A water pump draws about 4.4 A when connected to 240 V. What is the cost (with electrical energy at ... (Read 19 times)

fnuegbu

  • Hero Member
  • *****
  • Posts: 539
on: Jul 28, 2018
A water pump draws about 4.4 A when connected to 240 V. What is the cost (with electrical energy at 9 cents per kWh) of running the pump for 10 h?
 a. 82 cents
  c. 95 cents
  b. 8.0 cents
  d. 15 cents

Question 2

A ventilation fan with a moment of inertia of 0.034 kgm2 has a net torque of 0.11 Nm applied to it. If it starts from rest, what angular momentum will it have 9.0 s later?
 a. 0.88 kgm2/s
  c. 2.0 kgm2/s
  b. 0.99 kgm2/s
  d. 3.25 kgm2/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

swimkari

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


fnuegbu

  • Member
  • Posts: 539
Reply 2 on: Jul 28, 2018
:D TYSM

blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

A pteridophyte stem with tracheophyte adaptations for transporting and conserving water. A pteridophyte stem with tracheophyte adaptations for transporting and conserving water.
Some energy interconversions in living organisms Some energy interconversions in living organisms
Energy Transfer Processes: Free Convection Energy Transfer Processes: Free Convection
Two water pipes together can fill a certain tank in 6 h Two water pipes together can fill a certain tank in 6 h
Dramatic growth of algae in water treated with phosphate Dramatic growth of algae in water treated with phosphate
Food choices vs. energy choices Food choices vs. energy choices
Video: Definition of heart rate

For a complete list of videos, visit our video library