This topic contains a solution. Click here to go to the answer

Author Question: A 1200 W toaster does enough work in 10 seconds to raise an 80 kg man to a height of 15 meters. ... (Read 78 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
A 1200 W toaster does enough work in 10 seconds to raise an 80 kg man to a height of 15 meters.
 
  What will be an ideal response?

Question 2

Heat exchangers are important. Explain their use in power plants, including large scale solar power plants.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stano32

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

To raise an 80 kg man 15 meters takes 80 kg x 10 m/s2 x 15 m = 12,000 J of
work. In 10 s the 1200 W toaster does 1200 W x 10 s = 12.000 J of work. These are the
same, so the statement is true.

Answer to Question 2

The working fluid of the power plant may be water or some other fluid. At the
final stage, the working fluid is usually water or steam that turns the turbine blades. Many
power plants use working fluids at high pressure (as, for example, nuclear pressurized water
reactors or solar towers). In order to get from the high-pressure working fluid to water or
steam, at least one heat exchanger is necessary.




jazziefee

  • Member
  • Posts: 505
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it


Jossy

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

For a complete list of videos, visit our video library