« previous next »

Author Question: The efficiency of a light bulb is the ratio of the: a. heat plus electricity produced to the ... (Read 32 times)

asan beg

  • Hero Member
  • *****
  • Posts: 570
on: Jul 28, 2018
The efficiency of a light bulb is the ratio of the:
 a. heat plus electricity produced to the electrical input
  b. voltage output of the bulb to the power input
  c. energy into the bulb to the energy out of the bulb
  d. light output to the electrical energy input

Question 2

A carnival Ferris wheel has a 15-m radius and completes five turns about its horizontal axis every minute. What is the acceleration of a passenger at his lowest point during the ride?
 a. 5.7 m/s2 downward
  b. 4.1 m/s2 upward
  c. 14 m/s2 downward
  d. 4.1 m/s2 downward
  e. 19 m/s2 downward


Danny Ewald

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 28, 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?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Nitrogenous wastes produced by different animal groups. Nitrogenous wastes produced by different animal groups.
Electricity made easy Electricity made easy
When both sides of the back have been massaged, redrape the back. With light to moderate force, use ... When both sides of the back have been massaged, redrape the back. With light to moderate force, use ...
Apply light stroking with the palms from hip to ankles as a connecting and finishing technique. ... Apply light stroking with the palms from hip to ankles as a connecting and finishing technique. ...
The X/A ratio determines gene transcription and transcript splicing pattern The X/A ratio determines gene transcription and transcript splicing pattern
Light-independent reactions in C4 plants Light-independent reactions in C4 plants
Video: Acids and bases - definition

For a complete list of videos, visit our video library