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

Author Question: A spherical hot air balloon of diameter 20. meters just floats (hovers) when the hot air inside has ... (Read 42 times)

humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
A spherical hot air balloon of diameter 20. meters just floats (hovers) when the hot air inside has been heated to a density of 1.00 kg/m3.
 
  What is the weight of the balloon and cargo (not including the air inside) if the surrounding air has a density of 1.30 kg/m3?

Question 2

A charged particle moves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves
 
  A) upward at an angle of 45 above the horizontal.
  B) straight upward.
  C) straight downward.
  D) horizontally.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jamesnevil303

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

1.2  104 Newtons (weight of 1.3  103 kg)

Answer to Question 2

D


humphriesbr@me.com

  • Member
  • Posts: 550
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

aruss1303

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

This is the first portrait of George Washington, painted by John Gadsby Chapman. Washington’s right This is the first portrait of George Washington, painted by John Gadsby Chapman. Washington’s right
The primary windings are inside the secondary windings on this General Motors coil. The primary windings are inside the secondary windings on this General Motors coil.
Shown is the electronic circuit inside a ceramic disc MAP sensor used on many Chrysler engines. The ... Shown is the electronic circuit inside a ceramic disc MAP sensor used on many Chrysler engines. The ...
Movie Inside Out Movie Inside Out
US Airways Flight 1549 floats in New York’s Hudson River after collisions with geese incapacitated ... US Airways Flight 1549 floats in New York’s Hudson River after collisions with geese incapacitated ...
Parasites inside and out. Parasites inside and out.
Video: The Nerve Impulse

For a complete list of videos, visit our video library