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

Author Question: A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous ... (Read 88 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Jul 28, 2018
A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous medium. What is the change in mechanical energy caused by the force the viscous medium exerts on the sphere during this descent?
 a. -6.1 J
  b. -4.6 J
  c. -5.3 J
  d. -6.8 J
  e. -2.7 J

Question 2

A 1.5-kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring (k = 200 N/m) which has its other end fixed. If this system is displaced 20 cm horizontally from the equilibrium position and released from rest, the block first reaches the equilibrium position with a speed of 2.0 m/s. What is the coefficient of kinetic friction between the block and the horizontal surface on which it slides?
 a. 0.34
  b. 0.24
  c. 0.13
  d. 0.44
  e. 0.17


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

otokexnaru

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


viki

  • Member
  • Posts: 525
Reply 2 on: Jul 28, 2018
Excellent

sarah_brady415

  • Member
  • Posts: 328
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Moving box Moving box
Effleurage as a finishing and transition technique. Finish the left side with effleurage moving back ... Effleurage as a finishing and transition technique. Finish the left side with effleurage moving back ...
Rhythmic compression to gluteal muscles using the fist. Press into the large gluteal muscles moving ... Rhythmic compression to gluteal muscles using the fist. Press into the large gluteal muscles moving ...
Apply light circular friction over the wrist using your thumbs. Observe the skin moving over the ... Apply light circular friction over the wrist using your thumbs. Observe the skin moving over the ...
Endogenous Analgesic Compounds Released After Pain Stimuli Endogenous Analgesic Compounds Released After Pain Stimuli
A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp
Video: Central Nervous System Animation

For a complete list of videos, visit our video library