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

Author Question: When an inflated balloon is released with its end unsealed and takes off across the room, how is ... (Read 59 times)

EAugust

  • Hero Member
  • *****
  • Posts: 550
on: Jul 28, 2018
When an inflated balloon is released with its end unsealed and takes off across the room, how is momentum conserved?
 a. Momentum is conserved because the balloon is displacing atmosphere molecules from the air around it.
  b. Momentum is conserved because the balloon is getting smaller.
  c. Momentum is conserved because the balloon is getting larger.
  d. Momentum is conserved because the air molecules inside the balloon are moving out in the opposite direction from the balloon's movement.
  e. Momentum is conserved because the air from the balloon pushes the air behind it.

Question 2

In this photo, a fire extinguisher provides the impulse for a hallway rocket cart. Which is NOT true about the motion of the rocket cart and person?
 a. The momentum of the cart and person is equal in magnitude and opposite in direction to the momentum of the expelled gas.
  b. The cart and person are propelled as a result of gas from the fire extinguisher pushing against air in the room.
  c. The force of the gas on the cart and person is equal and opposite to the force of the person and cart on the expelled gas.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

batool

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

b


EAugust

  • Member
  • Posts: 550
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

miss.ashley

  • Member
  • Posts: 371
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken
Bill Viola. Room for St. John of the Cross. 1983. Bill Viola. Room for St. John of the Cross. 1983.
Receptors in the autonomic nervous system: (a) Sympathetic pathway: Ach is released at the ganglia ... Receptors in the autonomic nervous system: (a) Sympathetic pathway: Ach is released at the ganglia ...
Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ... Thick-walled barrel-shaped arthrospores on thin glass like hyphae; the room-temperature form of ...
Subsurface mining takes place in underground tunnels Subsurface mining takes place in underground tunnels
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library