« previous next »

Author Question: Five boxes, each having weight 100 N, are stacked up. The bottom box is the fifth from the top. What ... (Read 54 times)

EY67

  • Hero Member
  • *****
  • Posts: 531
on: Jul 28, 2018
Five boxes, each having weight 100 N, are stacked up. The bottom box is the fifth from the top. What is the magnitude of the normal force upward exerted by the third box from the top on the second box from the top?
 a. 100 N
  c. 300 N
  b. 200 N
  d. 400 N

Question 2

If the drag force on a car is F at a moderate highway speed v, at what speed would the drag force be doubled?
 a. 1.2v
  c. 1.7v
  b. 1.4v
  d. 2.0v


chevyboi1976

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

EY67

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 28, 2018
Thanks


chevyboi1976

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Compression Occurs in vertebrae subjected to extreme stresses, as when one falls and lands on his or Compression Occurs in vertebrae subjected to extreme stresses, as when one falls and lands on his or
The biped’s foot bears more weight than the quadruped’s and so the bones are stouter. The biped’s foot bears more weight than the quadruped’s and so the bones are stouter.
View of the bottom surface of the human brain. View of the bottom surface of the human brain.
Compression ratio is the ratio of the total cylinder volume (when the piston is at the bottom of ... Compression ratio is the ratio of the total cylinder volume (when the piston is at the bottom of ...
Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ... Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ...
Recommended Weight Gain during Pregnancy Recommended Weight Gain during Pregnancy
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library