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
statuscvo [17]
3 years ago
10

Calculate the de Broglie wavelength of an electron traveling at 2.0 x 10^8 m/s (me = 9.1*10^-31 kg).

Physics
1 answer:
timofeeve [1]3 years ago
4 0

Answer:

\lambda=3.64\times 10^{-12}\ m

Explanation:

We have,

Speed of an electron is 2\times 10^8\ m/s

It is required to find the De Broglie wavelength of electron. The formula for the De- Broglie wavelength is given by :

\lambda=\dfrac{h}{mv}

h is Planck's constant

m is mass of an electron

Plugging all the values we get :

\lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-31}\times 2\times 10^{8}}\\\\\lambda=3.64\times 10^{-12}\ m

So, the De-Broglie wavelength of an electron is 3.64\times 10^{-12}\ m

You might be interested in
Question 6 of 10
sergejj [24]
The answer is C.89,866. I multiplied 262x343.
3 0
2 years ago
According to gay-lussac’s law: select one:
DaniilM [7]
Gay-Lussac's Law states
P1 / T1 = P2 / T2
So the answer is b

8 0
2 years ago
Read 2 more answers
A block of mass 20 kg sits on a ramp with an angle of 31 degrees above the horizontal. Assuming no friction, how fast will the b
Artyom0805 [142]

Answer:

2.98 m/s^2

Explanation:

I have done this before and it was a question on my physics test

4 0
3 years ago
Read 2 more answers
The frequency of a wave is 200 Hz. The wavelength is 0.1 m. What is the period of the wave?
Aleks04 [339]
The formula for the period of wave is: wave period is equals to 1 over the frequency.waveperiod=\frac{1}{frequency}
To get the value of period of wave you need to divide 1 by 200 Hz. However, beforehand, you have to convert 200 Hz to cycles per second. So that would be, 200 cyles per second or 200/s.
By then, you can start the computation by dividing 1 by 200/s. Since 200/s is in fractional form, you have to find its reciprocal form and multiply it to one which would give you 1 (one) second over 200. This would then lead us to the value 0.005 seconds as the wave period.

wave period= 1/200 Hz
Convert Hz to cycles per second first
200 Hz x 1/s= 200/second
Make 200/second as your divisor, so:

wave period= 1/ 200/s

get the reciprocal form of 200/s which is s/200

then you can start the actual computation:

wave period= 1 x s divided by 200

this would give us an answer of 0.005 s. 
6 0
2 years ago
What do fuel cells, batteries and, solar cells have in common A.the all produce static electricity B. they are all sources of di
Vaselesa [24]
The correct answer is B :)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Two children playing on a frictionless garden gate invent a new game called "gate". The idea is that they will get on opposite s
    10·1 answer
  • Write an equation that expresses the following relationship. u varies jointly with p and d and inversely with w In your equation
    5·1 answer
  • Scientists estimate the rate of a wildebeest running at full speed to be 66 feet per second. Write a function rule to describe t
    5·2 answers
  • If standard household voltage is 120 volts, what is the current through the stove?
    5·1 answer
  • To work on your car at night, you use an extension cord to connect your work light to a power outlet near the door. How would th
    5·1 answer
  • Which of the following statements is true vibrations ?
    5·1 answer
  • The force an ideal spring exerts on an object is given by , where measures the displacement of the object from its equilibrium p
    6·1 answer
  • Two runners start at the same point and jog at a constant speed along a straight path. Runner A starts at time t = 0 s, and Runn
    8·1 answer
  • A body of mass 11 kg is subjected to a net force of 20 N East for 30 s. Calculate the change in
    10·1 answer
  • Using the information from the previous problem (A 2kg ball rotates on the end of a 1.4m long string. The ball makes 5 revolutio
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!