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
yaroslaw [1]
3 years ago
5

How many electrons flow through a point in a wire in 7.00 s if there is a constant current of I = 4.35 A?

Physics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

1.90×10²⁰ Electrons

Explanation:

From the question,

Q = It.................... Equation 1

Where Q = charge flowing through the wire, I = current, t = time

Given: I = 4.35 A, t = 7.00 s

Substitute these values into equation 1

Q = 4.35(7.00)

Q = 30.45 C.

But,

1 electron contains 1.6×10⁻¹⁹ C

therefore,

30.45 C = 30.45/1.6×10⁻¹⁹  electrons

= 1.90×10²⁰ Electrons

You might be interested in
A horizontal force of 400 N is exerted on a 2.0-kg ball as it rotates (at
frutty [35]

Answer:

the speed of the ball is 10 m/s

Explanation:

Given;

magnitude of exerted force, F = 400 N

mass of the ball, m = 2 kg

radius of the circle, r = 0.5

The speed of the ball is calculated by applying centripetal force formula;

F = \frac{mv^2}{r} \\\\v^2 = \frac{Fr}{m}\\\\v = \sqrt{\frac{Fr}{m}}\\\\ v = \sqrt{\frac{400*0.5}{2}}\\\\v = 10 \ m/s

Therefore, the speed of the ball is 10 m/s

6 0
3 years ago
Read 2 more answers
What is the Force acting on a ball if the mass of the ball is 2 kg and the acceleration of the ball is 5 m/s2?
hjlf

Answer:

please find attached file

Explanation:

5 0
3 years ago
WILL GIVE BRILLIANTIST
sleet_krkn [62]
Answer: A. foliated

Explanation: took the test!

7 0
2 years ago
Read 2 more answers
A car drives 16 miles south and then 12 miles west. What is the magnitude of the car’s displacement?
Lorico [155]
20miles (16^2+12^2)^1/2=20
7 0
3 years ago
In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how large wou
Evgesh-ka [11]

Answer:

size of popcorn seed may meet the scaled earth size of x = 0.07312 in.  

Explanation:

Given:-

- The diameter of actual sun, Ds = 1.3927 * 10^6 km

- The diameter of model sun ball, ds = 8 in

- The diameter of the actual earth, De = 12,742 km

Find:-

How large would be the earth model

Solution:-

- We can use the actual diameters of the earth and sun to develop the ratio of earth diameter to that of sun. The direct ratio can be used to model the diameter of earth for the scale model

                                          Sun                   Earth

                     Actual :     1392700 km     12,742 km

                      Scale :           8 in                    x

- Use direct relations and solve for x:

                               x = (8 in)*(12,742 km ) / ( 1392700 km )

                              x = 0.07312 in.

- From the given options apple, grapefruit and marble diameters are larger than 1 inch. So only the size of popcorn seed may meet the scaled earth size of x = 0.07312 in.  

4 0
3 years ago
Read 2 more answers
Other questions:
  • A loaf of bread is removed from an oven and is left sitting in the kitchen to cool. Its temperature t minutes after being remove
    12·1 answer
  • The higher heat capacity of water compared to rock or sediment means that for the same seasonal variation in insolation the land
    5·1 answer
  • One major advantage of alternating current over direct current is that you can use alternating current with a device known as a
    11·1 answer
  • The increase in height as a tsunami approaches shore is due to
    9·2 answers
  • The shuttles main engine provides 154,360 kg of thrust for 8 minutes. If the shuttle accelerated at 29m/s/s, and fires for at le
    14·1 answer
  • Please helpppp<br> Can you tell me which constellations are in the North, West, East, and, South?
    8·1 answer
  • Starting from zero, the electric current takes 2 seconds to reach half its maximum possible value in an RL circuit with a resist
    11·1 answer
  • Your car is initially at rest when your hit that gas and the car begins to accelerate at a rate of 1.464 m/s/s. The acceleration
    6·1 answer
  • An ideal pendulum is often discussed when studying simple harmonic motion. What are the conditions needed for an ideal pendulum?
    10·2 answers
  • Question 7 of 10 A permanent magnet picks up an iron nail, magnetizing the nail. How is this system different from an electromag
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!