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

Author Question: An object having a fixed emissivity of 0.725 radiates heat at a rate of 10 W when it is at an ... (Read 94 times)

RRMR

  • Hero Member
  • *****
  • Posts: 557
on: Jul 29, 2018
An object having a fixed emissivity of 0.725 radiates heat at a rate of 10 W when it is at an absolute temperature T. If its temperature is doubled to 2T, at what rate will it now radiate?
 
  A) 20 W
  B) 40 W
  C) 80 W
  D) 160 W
  E) 320 W

Question 2

A tennis ball bounces on the floor three times, and each time it loses 23.0 of its energy due to heating. How high does it bounce after the third time, if we released it from the floor?
 
  A) 180 cm
  B) 18 cm
  C) 180 mm
  D) 240 cm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Moriaki

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

A


RRMR

  • Member
  • Posts: 557
Reply 2 on: Jul 29, 2018
Excellent

kjohnson

  • Member
  • Posts: 330
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The average adult has about 21 square feet of skin.

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?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

A nurse adjusts the rate of a client’s IV. A nurse adjusts the rate of a client’s IV.
Spot the hidden object Spot the hidden object
A gasoline testing kit, including an insulated container where water at 100°F is used to heat a ... A gasoline testing kit, including an insulated container where water at 100°F is used to heat a ...
Instruct recipient on giving you feedback immediately if heat becomes too intense. Remind the person ... Instruct recipient on giving you feedback immediately if heat becomes too intense. Remind the person ...
Bidirectional replication from several fixed origins (O) on a linear eukaryotic chromosome Bidirectional replication from several fixed origins (O) on a linear eukaryotic chromosome
The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p
Video: Hierarchical Sequencing Method - Sequence Tagged Sites

For a complete list of videos, visit our video library