« previous next »

Author Question: A transformer is used to step up the voltage to a power line. If the stepped-up voltage is 10 times ... (Read 37 times)

stock

  • Hero Member
  • *****
  • Posts: 573
on: Jul 28, 2018
A transformer is used to step up the voltage to a power line. If the stepped-up voltage is 10 times the original value, by how much will the power loss in the line decrease?
 a. more than 95
  b. between 10 and 20
  c. between 20 and 95
  d. There will be no change since the power into a transformer equals the power out.

Question 2

When two sound waves are out of phase by _____, destructive interference will occur.
 a. 90
  c. 540
  b. 270
  d. 720


meryzewe

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

stock

  • Hero Member
  • *****
  • Posts: 573
Reply #2 on: Jul 28, 2018
Thank you!


meryzewe

  • Sr. Member
  • ****
  • Posts: 346
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

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?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Continuous, Absorption Line, and Emission Line Spectra Continuous, Absorption Line, and Emission Line Spectra
Line immunoassay (LIA), also recombinant immunoblot assay (RIBA) and Immuno-stripe, is similar to a ... Line immunoassay (LIA), also recombinant immunoblot assay (RIBA) and Immuno-stripe, is similar to a ...
OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ... OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ...
Using the same hand position as in Step 3, apply circular friction along paraspinal muscles of the ... Using the same hand position as in Step 3, apply circular friction along paraspinal muscles of the ...
Modern Hydroelectric Power Uses Modern Hydroelectric Power Uses
Bright-Line Spectra of Hydrogen and Helium Bright-Line Spectra of Hydrogen and Helium
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library