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 23 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
Great answer, keep it coming :)

parshano

  • Member
  • Posts: 333
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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.

Range of Motion of the Hip Joint, Flexion with Knee Straight Range of Motion of the Hip Joint, Flexion with Knee Straight
Use strong leg muscles, keeping back straight, when lifting. Use strong leg muscles, keeping back straight, when lifting.
Preparing Slides Preparing Slides
Always connect an exhaust hose to the tailpipe of a vehicle to be run inside a building. Always connect an exhaust hose to the tailpipe of a vehicle to be run inside a building.
(A) Thumb slides to forehead in 2–3 rows, and along the eyebrow to the outer edge. (B) Press into ... (A) Thumb slides to forehead in 2–3 rows, and along the eyebrow to the outer edge. (B) Press into ...
How much heat is released when 115 g of steam at 100.0C is cooled to ice at -15.0C? The ... How much heat is released when 115 g of steam at 100.0C is cooled to ice at -15.0C? The ...
Video: Mutations and translation

For a complete list of videos, visit our video library