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

Author Question: If you put 100 watts of power into a machine that produces 75 watts of power, the efficiency of the ... (Read 192 times)

oliviahorn72

  • Hero Member
  • *****
  • Posts: 579
on: Jul 21, 2018
If you put 100 watts of power into a machine that produces 75 watts of power, the efficiency of the machine is ____ percent.
 
 

a. 25 c. 75
  b. 50 d. 125



Question 2

Which item performs work using a wheel and pulley system?
 
 

a. elevator c. train
  b. ramp d. inclined plane



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fauacakatahaias

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 21, 2018
Answer to Question 1

C

Answer to Question 2

A


oliviahorn72

  • Member
  • Posts: 579
Reply 2 on: Jul 21, 2018
Great answer, keep it coming :)

laurnthompson

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Mixing bacterial genotypes produces rare recombinants Mixing bacterial genotypes produces rare recombinants
Faulty outlooping produces lambda phage containing bacterial DNA Faulty outlooping produces lambda phage containing bacterial DNA
The Power and Control Wheels of Abusive Relationships When one person in a relationship repeatedly ... The Power and Control Wheels of Abusive Relationships When one person in a relationship repeatedly ...
The Tōhoku earthquake: shaking Japan’s trust in nuclear power The Tōhoku earthquake: shaking Japan’s trust in nuclear power
The Power of Classical Conditioning The Power of Classical Conditioning
Video: The primary factors that affect circulation - MABP, CO and SVR

For a complete list of videos, visit our video library