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

Author Question: A heat engine ________. a. converts work into heat energy b. needs a temperature difference to be ... (Read 116 times)

tth

  • Hero Member
  • *****
  • Posts: 579
on: Jul 28, 2018
A heat engine ________.
 a. converts work into heat energy
  b. needs a temperature difference to be able to work
  c. can be 100 efficient in the absence of friction
  d. needs electricity to be able to run

Question 2

A hunter wishes to cross a river that is 1.5 km wide and flows with a velocity of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 12 km/h with respect to the water. What is the minimum time for crossing?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

0.14 h


tth

  • Member
  • Posts: 579
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Difference between Asian (left) and African (right) elephant ears. Difference between Asian (left) and African (right) elephant ears.
The immune system has several different components that work in concert. The immune system has several different components that work in concert.
Body Temperature Responses Body Temperature Responses
Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer
Kinetic versus Potential Energy Kinetic versus Potential Energy
Gravitational Potential Energy Gravitational Potential Energy
Video: Exercise and cardiac output & Definition of stroke volume

For a complete list of videos, visit our video library