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
Lady bird [3.3K]
3 years ago
5

An electron initially at rest is accelerated over a distance of 0.210 m in 33.3 ns. Assuming its acceleration is constant, what

voltage was used to accelerate it
Physics
1 answer:
Elodia [21]3 years ago
7 0

Answer:

V = 451.47 volts

Explanation:

Given that,

Distance, d = 0.21 m

Initial speed, u = 0

Time, t = 33.3 ns

Let v is the final velocity. Using second equation of motion as :

d=ut+\dfrac{1}{2}at^2

a is acceleration, a=\dfrac{v-u}{t} and u = 0

So,

d=\dfrac{1}{2}(v-u)t

v=\dfrac{2d}{t}\\\\v=\dfrac{2\times 0.21}{33.3\times 10^{-9}}\\\\v=1.26\times 10^7\ m/s

Now applying the conservation of energy i.e.

\dfrac{1}{2}mv^2=qV

V is voltage

V=\dfrac{mv^2}{2q}\\\\V=\dfrac{9.1\times 10^{-31}\times (1.26\times 10^7)^2}{2\times 1.6\times 10^{-19}}\\\\V=451.47\ V

So, the voltage is 451.47 V.

You might be interested in
Assuming all object are moving with the same velocity, witch statement describes the object with the largest intertia?
Kisachek [45]

Answer:

Mass is the quantitative measure of inertia of any object.

Explanation:

The object that have largest mass will   have largest inertia as well as largest momentum.

3 0
3 years ago
How much time would be saved if the delicious chicken breast were thawed on the kitchen counter instead, given that room tempera
Art [367]
The time that would be saved if the delicious chicken breast were thawed on the kitchen counter instead, given that room temperature is around 69 F could be calculated by :
tf - ti  = 5.7

hope this helps

5 0
3 years ago
3. Read this sentence from the text: "Most of the solar radiation is absorbed by the atmosphere
Semmy [17]
I think the answer is A
6 0
4 years ago
A charge of -8.5 µC is traveling at a speed of 9.0 106 m/s in a region of space where there is a magnetic field. The angle betwe
Sindrei [870]

Answer:

The magnitude of the magnetic field is 9.3\times 10^{-5}\ T.

Explanation:

Given that,

Charge, q=-8.5\ \mu C=-8.5\times 10^{-6}\ C

Speed of the charged particle, v=9\times 10^6\ m/s

The angle between the velocity of the charge and the field is 56°.

The magnitude of force, F=5.9\times 10^{-3}\ N

We need to find the magnitude of the magnetic field. When a charged particle moves in the magnetic field, the magnetic force is experienced by it. The force is given by :

F=qvB\ \sin\theta

B is the magnetic field.

B=\dfrac{F}{qv\ \sin\theta}\\\\B=\dfrac{5.9\times 10^{-3}}{8.5\times 10^{-6}\times 9\times 10^6\ \sin(56)}\\\\B=9.3\times 10^{-5}\ T

So, the magnitude of the magnetic field is 9.3\times 10^{-5}\ T. Hence, this is the required solution.

4 0
4 years ago
A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the
Sergio039 [100]

Answer:

W = 1.06 MJ

Explanation:

- We will use differential calculus to solve this problem.

- Make a differential volume of water in the tank with thickness dx. We see as we traverse up or down the differential volume of water the side length is always constant, hence, its always 8.

- As for the width of the part w we see that it varies as we move up and down the differential element. We will draw a rectangle whose base axis is x and vertical axis is y. we will find the equation of the slant line that comes out to be y = 0.5*x. And the width spans towards both of the sides its going to be 2*y = x.

- Now develop and expression of Force required:

                                             F = p*V*g

                                             F = 1000*(2*0.5*x*8*dx)*g

                                             F = 78480*x*dx

- Now, the work done is given by:

                                             W = F.s

- Where, s is the distance from top of hose to the differential volume:

                                             s = (5 - x)

- We have the work as follows:

                                            dW = 78400*x*(5-x)dx

- Now integrate the following express from 0 to 3 till the tank is empty:

                                           W = 78400*(2.5*x^2 - (1/3)*x^3)

                                           W = 78400*(2.5*3^2 - (1/3)*3^3)

                                           W = 78400*13.5 = 1058400 J

 

5 0
4 years ago
Other questions:
  • A ball is dropped from rest from the top of a 6.15-m-tall building, falls straight downward, collides in-elastically with the gr
    10·1 answer
  • Which of the following has the largest momentum?
    9·1 answer
  • Desert sand is very hot in the day and very cool at night. what does this indicate about its specific heat capacity?
    13·1 answer
  • Electrons flow in the wire from a(n) terminal to a(n) terminal
    10·1 answer
  • A compact car has a mass of 1300 kg . When empty, the car bounces up and down on its springs 1.5 times per second. What is the c
    12·1 answer
  • How does the configuration of the electric field occur between a "parallel plate" setup in a lab?What is the effect of conductor
    6·1 answer
  • If the mass of a material is 41 grams and the volume of the material is 8 cm^3, what would the density of the material be?
    7·1 answer
  • Why are force fields used to describe magnetic force? A. Magnetic force acts between two objects that are not touching. B. Magne
    5·1 answer
  • Quick please I'll give you brainliest.
    12·1 answer
  • What kind of electromagnetic waves are used by an FM radio?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!