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

Author Question: When you blow some air above the upper face of a paper strip, the paper rises. This occurs because ... (Read 102 times)

charchew

  • Hero Member
  • *****
  • Posts: 579
on: Jul 29, 2018
When you blow some air above the upper face of a paper strip, the paper rises. This occurs because
 
  A) the air above the upper face of the paper moves faster, which makes the pressure lower than at the lower face.
  B) the air above the upper face of the paper moves faster, which makes the pressure higher than at the lower face.
  C) the air above the upper face of the paper moves slower, which makes the pressure lower than at the lower face.
  D) the air above the upper face of the paper moves faster but the pressure remains constant.
  E) the air above the upper face of the paper moves slower, which makes the pressure higher than at the lower face.

Question 2

Two objects, one of mass m and the other of mass 2 m, are dropped from the top of a building. When they hit the ground:
 
  A) both will have the same kinetic energy.
  B) the heavier one will have twice the kinetic energy of the lighter one.
  C) the heavier one will have four times the kinetic energy of the lighter one.
  D) the heavier one will have half the kinetic energy of the lighter one.
  E) the heavier one will have one-fourth the kinetic energy of the lighter one.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jayson

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

B


charchew

  • Member
  • Posts: 579
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

deja

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

« previous next »
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Vapocoolant spray application while passively stretching the paracervical muscles. Take care to prot Vapocoolant spray application while passively stretching the paracervical muscles. Take care to prot
Men’s work? Women’s work? Customs in other societies can blow away stereotypes. As is common ... Men’s work? Women’s work? Customs in other societies can blow away stereotypes. As is common ...
The Upper Troposphere: Rossby Waves The Upper Troposphere: Rossby Waves
Cat paw mobilizing of shoulders toward the feet. Press downward along upper trapezius muscle from ... Cat paw mobilizing of shoulders toward the feet. Press downward along upper trapezius muscle from ...
Immune-to-brain signaling occurs in response to infection, injury, and inflammation that occur in pe Immune-to-brain signaling occurs in response to infection, injury, and inflammation that occur in pe
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library