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

Author Question: Two blocks are released from the top of a building. One falls straight down while the other slides ... (Read 291 times)

Awilson837

  • Hero Member
  • *****
  • Posts: 509
on: Jul 28, 2018
Two blocks are released from the top of a building. One falls straight down while the other slides down a smooth ramp. If all friction is ignored, which one is moving faster when it reaches the bottom?
 a. The block that went straight down.
  b. The block that went down the ramp.
  c. They both will have the same speed. d. Insufficient information to work the problem.

Question 2

A heat engine exhausts 4000 J of heat while performing 2000 J of useful work. What is the efficiency of the engine?
 a. 15
  c. 40
  b. 33
  d. 60


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

heyhey123

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


Awilson837

  • Member
  • Posts: 509
Reply 2 on: Jul 28, 2018
:D TYSM

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

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?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for
Building competency in patient centered care Building competency in patient centered care
Building competency in safety Building competency in safety
How much heat is released when 125.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The ... How much heat is released when 125.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The ...
In Falls, Energy Is Transmitted Along the Skeletal System In Falls, Energy Is Transmitted Along the Skeletal System
Polyps of a reef-building coral Polyps of a reef-building coral
Video: T cell receptors

For a complete list of videos, visit our video library