« previous next »

Author Question: My battery charger uses 12. watts. At 6.0 cents per kilowatt-hour, how much does it cost to charge ... (Read 263 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
on: Jul 27, 2018
My battery charger uses 12. watts. At 6.0 cents per kilowatt-hour, how much does it cost to charge batteries for 24. hours?
 
  A) 0.28 cents
  B) 1.4 cents
  C) 0.74 cents
  D) 1.7 cents
  E) 2.3 cents

Question 2

The second law of thermodynamics leads us to conclude that
 
  A) the total energy of the universe is constant.
  B) disorder in the universe is increasing with the passage of time.
  C) it is theoretically possible to convert heat into work with 100 efficiency.
  D) the average temperature of the universe is increasing with the passage of time.


blfontai

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Jacob Lawrence, You can buy bootleg whiskey for twenty-five cents a quart, from the Harlem Series. Jacob Lawrence, You can buy bootleg whiskey for twenty-five cents a quart, from the Harlem Series.
To use a battery charger, make sure the charger is connected to the battery before plugging in the ... To use a battery charger, make sure the charger is connected to the battery before plugging in the ...
Cost of Laptops Cost of Laptops
In the drawing of acetaldehyde, CH3CHO, the largest partial negative charge (-) occurs on In the drawing of acetaldehyde, CH3CHO, the largest partial negative charge (-) occurs on
Three point charges lie on the x x axis. Charge 1 (+9.9 μC μ C ) is at the origin, ... Three point charges lie on the x x axis. Charge 1 (+9.9 μC μ C ) is at the origin, ...
The charge for telephone calls T is partly constant and partly varies with the number N of ... The charge for telephone calls T is partly constant and partly varies with the number N of ...
Video: Brief Summary on Photosynthesis - Animation

For a complete list of videos, visit our video library