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

Author Question: A cubic box with sides of 20 cm contains 2 1023 molecules of helium with a root-mean-square (rms) ... (Read 41 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jul 27, 2018
A cubic box with sides of 20 cm contains 2  1023 molecules of helium with a root-mean-square (rms) speed of 200 m/s. The mass of a helium molecule is 3.4  10-27 kg.
 
  What is the average pressure exerted by the molecules on the walls of the container? A) 3.39 kPa
  B) 1.13 kPa
  C) 570 Pa
  D) 2.26 kPa
  E) 9.1 Pa

Question 2

The velocity of propagation of a transverse wave on a 2.0 m long string fixed at both ends is 200. m/s. Which one of the following is not a resonant frequency of this string?
 
  A) 50 Hz
  B) 200 Hz
  C) 25 Hz
  D) 100 Hz


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

guyanai

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


Arii_bell

  • Member
  • Posts: 596
Reply 2 on: Jul 27, 2018
Gracias!

cam1229

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Products of the Root's Primary Meristems Products of the Root's Primary Meristems
the fatty acid molecules expose the smallest possible hydrophobic surface area the fatty acid molecules expose the smallest possible hydrophobic surface area
Creating Complex Molecules Creating Complex Molecules
Kazimir Malevich, Black Square. Kazimir Malevich, Black Square.
Apply L stroke on both sides of the neck, from below the ear to just above the upper trapezius with ... Apply L stroke on both sides of the neck, from below the ear to just above the upper trapezius with ...
The inverse-square law and its effects. Doubling your distance away from a radioactive material ... The inverse-square law and its effects. Doubling your distance away from a radioactive material ...
Video: Enzyme structure - Properties of enzymes

For a complete list of videos, visit our video library