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

Author Question: A 2-kg ball is held 4 m above the ground. Relative to the ground its potential energy is A) 6 J. ... (Read 94 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jul 29, 2018
A 2-kg ball is held 4 m above the ground. Relative to the ground its potential energy is
 
  A) 6 J.
  B) 8 J.
  C) 32 J.
  D) 80 J.
  E) more than 80 J.

Question 2

A clerk can lift cylindrical packages 1 meter vertically, or can roll them up a 2-meter-long ramp to the same elevation. With the ramp, the applied force required is about
 
  A) half as much.
  B) the same.
  C) twice as much.
  D) four times as much.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jadwiga9

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


skymedlock

  • Member
  • Posts: 561
Reply 2 on: Jul 29, 2018
Gracias!

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Whenever a vehicle is raised off the ground, a safety stand should be placed under the frame, axle, ... Whenever a vehicle is raised off the ground, a safety stand should be placed under the frame, axle, ...
The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ... The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ...
Meiosis involves two complete divisional operations forming four potential sex cells. Meiosis involves two complete divisional operations forming four potential sex cells.
Energy Energy
Effect of a catalyst on activation energy Effect of a catalyst on activation energy
A soccer ball is released from rest at the top of a grassy incline. After 8.6 seconds, the ball ... A soccer ball is released from rest at the top of a grassy incline. After 8.6 seconds, the ball ...
Video: Hierarchical Sequencing Method - Sequence Tagged Sites

For a complete list of videos, visit our video library