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 264 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
Gracias!

LVPMS

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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.

Frank Gehry and Vlado Milunić, Rasin Building (a.k.a. the "Dancing House" or ... Frank Gehry and Vlado Milunić, Rasin Building (a.k.a. the "Dancing House" or ...
J. M. W. Turner, The Upper Falls of the Reichenbach. J. M. W. Turner, The Upper Falls of the Reichenbach.
Receptors in the autonomic nervous system: (a) Sympathetic pathway: Ach is released at the ganglia ... Receptors in the autonomic nervous system: (a) Sympathetic pathway: Ach is released at the ganglia ...
Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ... Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ...
Human activity has released carbon from sequestration in long-term reservoirs Human activity has released carbon from sequestration in long-term reservoirs
Endogenous Analgesic Compounds Released After Pain Stimuli Endogenous Analgesic Compounds Released After Pain Stimuli
Video: Role of ATP in muscle movement

For a complete list of videos, visit our video library