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
kaheart [24]
3 years ago
6

Two spherical objects are separated by a distance that is 1.08 x 10-3 m. The objects are initially electrically neutral and are

very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 3.89 x 10-21 N. How many electrons did it take to produce the charge on one of the objects
Physics
1 answer:
Alla [95]3 years ago
8 0

Answer:

the charge on the object is 71.043×10^-20 C and the number of electron is 4.44

Explanation:

from coulumbs law, The force that is acting over both charge can be computed as

F=( kq1q2)/r^2..............eqn(1)

Where

F=electrostatic force= 3.89 x 10-21 N

k= column constant= 9 x 10^9 Nm^2/C^2

q1 and q2= magnitude of the charges

r= distance between the charges= 1.08 x 10-3 m.

Since both charges are experiencing the same force, eqn(1) can be written as

F=( kq^2)/r^2.

We can make q subject of the formula

q= √(Fr^2)/k

= √[(3.89 x 10^-21× (1.08 x 10^-3)^2]/8.99 x 10^9

q= 71.043×10^-20 C

Hence, the charge is 71.043×10^-20 C

From quantization law, the number of electron can be computed as

N=q/e

Where

N= number of electron

q= charges

=1.6×10^-19C

N=71.043×10^-20/1.6×10^-19

=4.44

Hence, the charge on the object is 71.043×10^-20 C and the number of electron is 4.44

You might be interested in
A toy rocket fires its engines to launch it straight up from rest. After a short time, the engine turns off and the
madreJ [45]

Answer:

at 10 seconds.. b/c that's when the velocity stops increasing..

Explanation:

8 0
3 years ago
The temperature inside a vehicle can rise ____ degrees higher than the outside temperature.
Elis [28]

Answer:

Generally, 40 to 50 degrees

Explanation:

About the heat-up over time, whether the windows of a vehicle are locked or partially open makes very little difference. In both situations, in an internal temperature of a vehicle, even at an outside temperature of only 72 ° F, it may exceed approximately 40 ° F within one hour. This happens mainly due to the greenhouse effect that is the heat inside the car is trapped and not allowed to escape. Thus, raising the temperature of the vehicle.

3 0
3 years ago
Push the plunger in the two syringes. Is your prediction correct? Why?​
4vir4ik [10]

Answer:

This is worded strangely.

4 0
3 years ago
The Fitness Gram push-up test is a measure of
Morgarella [4.7K]

Answer:

The answer is B.

Explanation:

I meant B. not C so sorry

6 0
3 years ago
A construction worker drags a box across the floor. If the frictional force between the floor and the box is 12.2 newtons, how m
victus00 [196]

The work done is 140.3 J

Explanation:

  • The work done is defined as the amount of force required or used to move an object over a particular distance. Hence, work done is the product of force in Newton and the distance in which the object moved in meters.
  • Here, in the question, it is given that there is a frictional force acting on the box by the floor and the distance it moves. Hence, to get the answer to multiply frictional force and the distance. So, will get the work done as 140.3 J.
8 0
3 years ago
Other questions:
  • When applying the process of science which of theseis tested 1.a question, 2.an observation, 3.a conclusion, 4.a prediction
    14·2 answers
  • A spring has a spring constant of 113 N/m . How much elastic potential energy is stored in the spring when it is compressed by 0
    13·2 answers
  • A steam engine absorbs 4 x 105 J and expels 3.5 x 105 J in each cycle. What is its efficiency?
    14·1 answer
  • A pendulum of mass 0.8 kg has 20 joules of potential energy at the top of its path. It’s kinetic energy at the bottom of its swi
    15·2 answers
  • Explain where most of the mass of an atom is located. Also, explain why some particles that make up the atom do not contribute m
    14·2 answers
  • If we take away a lot of energy from a liquid what phase will it change to ?
    7·1 answer
  • When the gun fires a projectile with a mass of 0.040 kg and a speed of 380 m/s, what is the recoil velocity of the shotgun and a
    12·1 answer
  • In an electric motor, electrical energy is converted into
    9·1 answer
  • A 06-C charge and a .07-C charge are apart at 3 m apart. What force attracts them?
    8·1 answer
  • consisting of an electric coil on a small paddle held over an area of the brain, __________ deactivates areas of the brain, allo
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!