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
NARA [144]
4 years ago
14

An electron is moving through a magnetic field whose magnitude is 83 x 10-5 T. The electron experiences only a magnetic force an

d has an acceleration of magnitude 34 x 10+13 m/s2. At a certain instant, it has a speed of 72 x 10+5 m/s. Determine the angle (less than 90°) between the electron's velocity and the magnetic field.
Physics
1 answer:
storchak [24]4 years ago
5 0

Answer:

the angle between the electron's velocity and the magnetic field is 19⁰

Explanation:

Given;

magnitude of the magnetic field, B = 83 x 10⁻⁵ T

acceleration of the electron, a = 34 x 10¹³ m/s²

speed of the electron, v = 72 x 10⁵ m/s

mass of electron, m = 9.11 x 10⁻³¹ kg

The magnetic force experienced by the electron is calculated as;

F = ma = qvB sinθ

where;

q is charge of electron = 1.602 x 10⁻¹⁹ C

θ is the angle between the electron's velocity and the magnetic field.

sin(\theta ) = \frac{ma}{qvB} \\\\sin(\theta ) = \frac{(9.11\times 10^{-31})(34\times 10^{13})}{(1.602\times 10^{-19})\times (72\times 10^5) \times (83 \times 10^{-5})} \\\\sin(\theta ) = 0.3235\\\\\theta  =sin^{-1}(0.3235)\\\\\theta  =18.9^0

\theta \approx 19^ 0

Therefore, the angle between the electron's velocity and the magnetic field is 19⁰

You might be interested in
A rock is dropped from the top of a tall building. The rock's displacement in the last second before it hits the ground is 46 %
olasank [31]

Answer:

height is 69.68 m

Explanation:

given data

before it hits the ground =  46 % of entire distance

to find out

the height

solution

we know here acceleration and displacement that is

d = (0.5)gt²     ..............1

here d is distance and g is  acceleration and t is time

so when object falling it will be

h = 4.9 t²   ....................2

and in 1st part of question

we have (100% - 46% ) = 54 %

so falling objects will be there

0.54 h = 4.9 (t-1)²       ...................3

so

now we have 2 equation with unknown

we equate both equation

1st equation already solve for h

substitute h in the second equation and find t

0.54 × 4.9 t² = 4.9 (t-1)²  

t = 0.576 s and  3.771 s

we use here 3.771 s because  0.576 s is useless displacement in the last second before it hits the ground is 46 % of the entire distance it falls

so take t = 3.771 s

then h from equation 2

h = 4.9 t²

h = 4.9 (3.771)²

h =  69.68 m

so height is 69.68 m

6 0
4 years ago
Express force in terms of base units​
denis-greek [22]

Answer:

F = [MLT⁻²]

Explanation:

Force = ma

m (mass) = [M]

a (acceleration) = [LT⁻²]

F(force) = m x a = [MLT⁻²]

3 0
3 years ago
Which statement best expresses the central idea of the text?
Ainat [17]

Answer: A.Math plays a vital role in scientists’ search for alien life as it helps them determine where and when life might exist and communicate with it.

Explanation:

this is the only one i had found that was better than  all of them....i hope it's correct, let me know if it isn't.

7 0
3 years ago
Name on contact force and one field force acting on you right now
kati45 [8]

Answer:

Contact forces are forces that require the actual contact (touching) of two pieces of matter. There are a variety of contact forces. A very common one is friction. Anytime that two surfaces are in contact with one another, there is friction between the two surfaces. A field force is a force that works at a distance. No touching is required. Gravity is a good example of a field force, because it works whether or not an object is touching something or touching nothing at all.

8 0
3 years ago
What is the order of the types of nuclear radiation from lowest to highest
tangare [24]
The best and most correct answer to the question is :
Alpha particles
Beta particles
Gamma rays
Cosmic radiation
Neutrons
Hope this helped you :)
8 0
3 years ago
Other questions:
  • A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f
    11·1 answer
  • Which transactions can increase the balance in a checking account? Check all that apply.
    5·2 answers
  • Assume the light waves start out as unpolarized white light. How do light waves incident on the Polarizer and Analyzer behave at
    15·1 answer
  • Performing Metric Unit Conversions
    9·2 answers
  • How much force is needed to provide a 3m/s squared acceleration to a 1 kg object?
    15·1 answer
  • The rare earth elements include
    7·1 answer
  • Questions:
    8·1 answer
  • If a penny is dropped from rest from a tower takes 2 seconds to hit the ground, how far did it travel?
    12·1 answer
  • you want to describe the harmonic motion of a swing. you find out that it takes 2 seconds for the swing to complete one cycle. w
    9·1 answer
  • Which of the following is the definition of Specific Heat? Which of the following is the definition of Specific Heat? The moveme
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!