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

Author Question: A constant horizontal pull acts on a sled on a horizontal frictionless ice pond. The sled starts ... (Read 211 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jul 29, 2018
A constant horizontal pull acts on a sled on a horizontal frictionless ice pond. The sled starts from rest. When the pull acts over a distance x, the sled acquires a speed v and a kinetic energy K.
 
  If the same pull instead acts over twice this distance: A) The sled's speed will be 2v and its kinetic energy will be 2K.
  B) The sled's speed will be 2v and its kinetic energy will be K .
  C) The sled's speed will be v and its kinetic energy will be 2K.
  D) The sled's speed will be v and its kinetic energy will be K .
  E) The sled's speed will be 4v and its kinetic energy will be 2K.

Question 2

A 4.0-kg cylinder of solid iron is supported by a string while submerged in water. What is the tension in the string? The density of iron is 7860 kg/m3 and that of water is 1000 kg/m3.
 
  A) 24 N B) 40 N C) 20 N D) 2.5 N E) 34 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yasmina

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

E


ec501234

  • Member
  • Posts: 573
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

A reindeer sled, Arkhangelsk, Russia. Late nineteenth-century photochrom. A reindeer sled, Arkhangelsk, Russia. Late nineteenth-century photochrom.
For this bimolecular reaction, the rate constant k is second order For this bimolecular reaction, the rate constant k is second order
Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ... Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ...
Shoulder Stretch by Horizontal Flexion of Arm. Shoulder Stretch by Horizontal Flexion of Arm.
Horizontal stroking to thigh from superior to inferior. Lift tissues as hands cross over top of ... Horizontal stroking to thigh from superior to inferior. Lift tissues as hands cross over top of ...
Fingertip rake over pectoralis major from sternum to shoulder. Pull arm out from the body to access ... Fingertip rake over pectoralis major from sternum to shoulder. Pull arm out from the body to access ...
Video: Mendel's Principles of Inheritance (Father of Genetics)

For a complete list of videos, visit our video library