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 230 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
YES! Correct, THANKS for helping me on my review

ecabral0

  • Member
  • Posts: 310
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

The planes of the body. The sagittal plane is vertical from front to back, the frontal plane is vert The planes of the body. The sagittal plane is vertical from front to back, the frontal plane is vert
Water vapor is supplied to the atmosphere by local evaporation or horizontal transport (advection). Water vapor is supplied to the atmosphere by local evaporation or horizontal transport (advection).
Stretching the shoulder muscles with arm in horizontal flexion. Stretching the shoulder muscles with arm in horizontal flexion.
A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ... A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30 below the horizontal ...
The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ... The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...
Write equilibrium constant expressions for the following reactions in terms of concentration: Write equilibrium constant expressions for the following reactions in terms of concentration:
Video: Central Nervous System Animation

For a complete list of videos, visit our video library