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 125 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
Gracias!

31809pancho

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Measuring Temperature Using a Heat-Sensitive Wearable Thermometer Measuring Temperature Using a Heat-Sensitive Wearable Thermometer
This severely corroded water pump could not circulate enough coolant to keep the engine cool. As a ... This severely corroded water pump could not circulate enough coolant to keep the engine cool. As a ...
A typical oil pump mounted in the front cover of the engine that is driven by the crankshaft. A typical oil pump mounted in the front cover of the engine that is driven by the crankshaft.
A Painter At Work A Painter At Work
Climate models the flow of mass and energy Climate models the flow of mass and energy
China has relied on cheap coal to meet its demand for energy China has relied on cheap coal to meet its demand for energy
Video: Hormonal feedback loop components

For a complete list of videos, visit our video library