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
Vladimir [108]
3 years ago
9

What is the number of electrons that move past a point in a wire carrying 500 A of current in 4.0 minutes

Physics
1 answer:
mr Goodwill [35]3 years ago
3 0
The current is defined as the amount of charge Q that passes through a given point of a wire in a time \Delta t:
I= \frac{Q}{\Delta t}
Since I=500 A and the time interval is
\Delta t=4.0 min=240 s
the charge is
Q=I \Delta t=(500 A)(240 s)=1.2 \cdot 10^5 C

One electron has a charge of q=1.6 \cdot 10^{-19}C, therefore the number of electrons that pass a point in the wire during 4 minutes is
N= \frac{Q}{q}= \frac{1.2 \cdot 10^5 C}{1.6 \cdot 10^{-19}C}=7.5 \cdot 10^{23} electrons
You might be interested in
What is the anode in an alkaline battery?
andrew-mc [135]

For instance, in an alkaline battery, the anode is typically made of zinc, and manganese dioxide acts as the cathode. And the electrolyte between and inside those electrodes contains ions. ... These free electrons congregate inside the anode (the bottom, flat part of an alkaline battery)

Hope this helps:)

3 0
3 years ago
Read 2 more answers
The net force on an object moving with constant speed in circular motion is in which direction
ipn [44]

Answer:

the net force is the same direction as the acceleration

Explanation:

so toward the center of the circle about which the object is constantly moving.

7 0
2 years ago
You drop a batitin a stationary elevator and the ball hits the floor in o 50 s. How long does it take for the ball to hit the fl
solmaris [256]

Answer:

option (a) 0.61 s

Explanation:

Given;

Time taken by the ball to reach the ground  = 0.50 s

Let us first calculate the distance through which the ball falls on the ground

from the Newton's equation of motion, we have

s=ut+\frac{1}{2}at^2

where,  

s is the distance

a is the acceleration

t is the time

here it is the case of free fall

thus, a = g = acceleration due to gravity

u =  initial speed of the ball = 0

on substituting the values, we get

s=0\times 0.50+\frac{1}{2}\times9.8\times0.50^2

or

s = 1.225 m

Now,

when the elevator is moving up with speed of 1.0 m/s

the initial speed of the ball = -1.0 m/s   (as the elevator is moving in upward direction)

thus , we have

s=ut+\frac{1}{2}at^2

or

1.225=-1.0\times\ t+\frac{1}{2}\times9.8t^2

or

4.9t^2 - t  - 1.225 = 0

or

t = 0.612 s

hence, the correct answer is option (a) 0.61 s

4 0
3 years ago
1) The energy held in the molecules that your lunch is composed of
Rasek [7]

Answer:

Chemical energy

Explanation:

The energy held in the foods molecules a lunch pack is composed of is chemical energy.

They occur within food substances which originates from plants and animals as giant organic molecules.

  • Since food is often derived from plants and animals.
  • Plants produce their own food by producing macromolecules from simple inorganic substances in the environment.
  • Animals takes up these food and build their own body through it.
  • Plants and animal parts constitutes organic molecules in which chemical energy is duly stored.
  • When the molecules are broken down, they released their chemical potential energy into heat energy.
4 0
3 years ago
Put the steps in the media cycle in the order in which they occur. W. The powers that be communicate to the masses through vario
strojnjashka [21]

One of the most important aspects of civilization is communication.

People need one another, and in order for them to communicate and understand one another, they must be able to understand one another. The communication cycle explains how the mechanism of message transmission and comprehension works.

Although different cycles may have slightly varied phases and descriptions, the fundamental components are often the same:

Sender: the sender of communication is a person or an organization.

Message: The details the sender wants to share

Encoding is the process the sender uses to transform the message into one that can be sent.

The channel is the method used to send the message.

recipient: the individual or thing to whom the communication is

Decoding: How the communication is interpreted and comprehended by the recipient

Feedback: the reaction of the recipient

Learn more about communication here brainly.com/question/14698212

#SPJ4.

3 0
2 years ago
Other questions:
  • Is this a chemical or physical change
    9·1 answer
  • How does an electric field change due to voltage?
    8·1 answer
  • What distance will a vehicle travel before coming to a complete stop from a speed of 70 mph, (a) When the vehicle is traveling o
    8·1 answer
  • A certain part of an aircraft engine has a volume of 1.4 ft^3. (a) Find the weight of the piece when it is made of lead. (b) If
    8·1 answer
  • A person desires to reach a point that is 2.17 km from her present location and in a direction that is 29.6° north of east. Howe
    15·1 answer
  • Give the abbreviation for the unit which is equivalent to (kgm)/s2.
    15·1 answer
  • The free-fall acceleration at the surface of planet 1 is 22 m/s^2. The radius and the mass of planet 2 are twice those of planet
    5·1 answer
  • 90% of people marry their 7th-grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine
    12·2 answers
  • Which of the following cart configurations could produce the X versus T graph shown
    5·1 answer
  • Question: A car (assumed to be a Ford Taurus) is traveling around a turn that is banked at 7 degrees. The turn has a radius of 2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!