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

Author Question: Since the rate of heat transfer by conduction is proportional to the T, what percent savings in your ... (Read 28 times)

K@

  • Hero Member
  • *****
  • Posts: 608
on: Jul 28, 2018
Since the rate of heat transfer by conduction is proportional to the T, what percent savings in your heating bill would you expect if you turned the thermostat down from 75 to 65F, and the outside temperature is 25F?
 a. 10 b. 20 c. 30 d. 40 e. 50

Question 2

An artillery shell is fired with an initial velocity of 300 m/s at 55.0 above the horizontal. It explodes on a mountainside 42.0 s after firing. If x is horizontal and y vertical, find the (x, y) coordinates where the shell explodes.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

huda

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

7.22 km, 1.68 km


K@

  • Hero Member
  • *****
  • Posts: 608
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


huda

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Exercise increases the heart rate. Exercise increases the heart rate.
Factors that Influence Pulse Rate Factors that Influence Pulse Rate
Impulse conduction via a myelinated axon. Impulse conduction via a myelinated axon.
Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ... Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ...
Effect of Increasing the Investment Rate on the Steady State Effect of Increasing the Investment Rate on the Steady State
Proportional reasoning word problems Proportional reasoning word problems
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library