1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Usimov [2.4K]
3 years ago
15

In 1995 a research group led by Eric Cornell and Carl Wiemann at the University of Colorado successfully cooled Rubidium atoms t

o the 20-200 nK temperature range. Assuming (incorrectly) that the Rubidium atoms behave like particles of a classical ideal gas, calculate the RMS speed of a Rubidium atom at a temperature of 85.0 nK. In the experiments one particular isotope of Rubidium was used, Rubidium-87. The molar mass of this isotope is 86.91 g/mol.
Physics
1 answer:
saveliy_v [14]3 years ago
6 0

Answer:

0.00493 m/s

Explanation:

T = Temperature of the isotope = 85 nK

R = Gas constant = 8.341 J/mol K

M = Molar mass of isotope = 86.91 g/mol

Root Mean Square speed is given by

v_r=\sqrt{\dfrac{3RT}{M}}\\\Rightarrow v_r=\sqrt{\dfrac{3\times 8.314\times 85\times 10^{-9}}{86.91\times 10^{-3}}}\\\Rightarrow v_r=0.00493\ m/s

The Root Mean Square speed is 0.00493 m/s

You might be interested in
Why is physics important for high school students to learn?
Bond [772]

It is important for people to learn physics so that they can better understand the basic laws of the universe, and most importantly, so we can look at things with common sense, for you my friend i recommend watching <em>mythbusters</em>, they teach physics and make learning fun they teach you to look at the world with common sense. hope i helped!!! have a good day.


7 0
3 years ago
If the object is released from rest at point p,what is the kinetic energy at the lowest point Q of its swing.
marta [7]

Answer:

50%

Explanation:

3 0
3 years ago
Difference between diurnal and annual motion in two points​
Valentin [98]

Answer:

Explanation below:

Explanation:

Annual motion describes the changes in motion of the earth around the sun. Diurnal motion can be better understood as the change in motion caused by Earths rotation at the poles.

This might not be the answer you were looking for, your question is very vague.

5 0
2 years ago
7. What can be done to prevent such devastating destruction as seen in the earthquake in Haiti? correct me if im wrong on the su
Alex787 [66]
Well, there would have to major supports on every building that was tall even though we have very strong foundation the foundation doesn't do anything except no give us dirt as a floor.but a really strong structure to use is a triangle formation.
Hope this helped
3 0
2 years ago
You and a friend each carry identical boxes from the first floor of a building to a room located on the second floor, farther do
melamori03 [73]

Answer:

Work done in both the cases will be same

Explanation:

As we know that the work done against gravity is given as

W = F_g .d

here we know that gravitational force is a conservative force and the work done against gravitational force is independent of the path

So here the work done by person to move the object between two different heights will be independent of the path they choose

So for the first person and second person will be same in both the cases because the height through which the boxes are transferred will be same in both the cases

8 0
3 years ago
Other questions:
  • An object in circular motion has velocity that is constantly changing. The direction of the acceleration is
    15·1 answer
  • If a weather system is moving from the Pacific coast to North Carolina,
    8·1 answer
  • How Antman can breathe when his size is smaller then oxygen molecules?​
    10·1 answer
  • A passenger jet flies from one airport to another 1293 miles away in 2.1hours . Find average speed
    11·1 answer
  • A block is initially at position x = 0 and in contact with an uncompressed spring of negligible mass. The block is pushed back a
    13·1 answer
  • Plateau period are times in life when
    13·1 answer
  • Two boys on skateboards are facing each other. They push off, the first boy (mass: 43.8 kg) traveling backward at 2.1 m/s. If th
    6·1 answer
  • What happens when a cold front meets a warm front?
    9·2 answers
  • In a posteroanterior (pa) projection of the chest being used for cardiac evaluation, the heart measures 14.7 cm between its wide
    8·1 answer
  • A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other an
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!