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
FrozenT [24]
4 years ago
6

How many electrons are contained on the negatively-charged side of a capacitor when it is fullycharged if it is connected to a 1

.5 V battery, the capacitor’s square plates are 0.25 cm x 0.25 cm, and the plates’ separation is 1 mm?
A. 1.8 x 10^9
B. 3.8 x 10^8
C. 2.5 x 10^7
D. 5.2 x 10^5
E. 7.5 x 10^4
Physics
2 answers:
motikmotik4 years ago
5 0

Answer:

D. 5.2 x 10^5

Explanation:

Given:

voltage of the battery connected, V=1.5\ V

sides of square capacitor, s=0.0025\m

separation between the plates, d=10^{-3}\ m

<u>Now the total charge on the parallel plate capacitor is given as:</u>

Q=V.A\frac{\epsilon_o}{d}

where:

A= area of each plate

\epsilon_0= permittivity of free space

Q=1.5\times (0.0025^2\times 8.85\times 10^{-12}\times\frac{1}{10^{-3}} )

Q=8.3\times 10^{-14}\ C

Now the no. of electrons:

n=\frac{Q}{e}

where:

e=1.6\times 10^{-19}\ C is the charge on an electron

n=\frac{8.3\times 10^{-14}}{1.6\times 10^{-19}}

n\approx5.2\times 10^{5}

AVprozaik [17]4 years ago
3 0

Answer:

Explanation:

Capacitance of the capacitor

C = ε₀ A / d

(8.85 x 10⁻¹² x .25² x 10⁻⁴) / 1 x 10⁻³

C = .553125 x 10⁻¹³ F

Charge = capacitance x volt

= .553125 x 10⁻¹³ x 1.5

= .8296875 x 10⁻¹³ C

no of electrons

= charge / charge on one electron

= .8296875 10⁻¹³/ 1.6 x 10⁻¹⁹

= 5.2 x 10^5

You might be interested in
What are 2 factors affect air resistance on an object
inessss [21]

friction and the density of the air.

5 0
3 years ago
The correctly balanced equation for H2O2 → H2O + O2 is
Citrus2011 [14]

Answer:2H2O2 → 2H2O + O2

Explanation:

For a chemical equation to be balanced, the number of moles of each element at the reactant must be equal to that of the product.

According to the equation given

H2O2 → H2O + O2

There are two hydrogen atoms with two oxygen atoms at the reactant and 2hydrogen and 3oxygen at the product which shows the equation is not balanced. To balance this,

We will add 2 moles to H2O2 at the reactant and 2 moles to H2O at the product to give;

2H2O2 → 2H2O + O2 (Balanced equation)

As we can see that we now have 4 moles of Hydrogen and 4 moles of oxygen at both reactant and product making the equation balanced.

8 0
3 years ago
Kate wants to know which foil paper keeps bread fresher. She wraps three identical
mars1129 [50]

Answer:

hi

Explanation:

The answer is Responding Variables Hope this helps :D

6 0
3 years ago
A Ping-Pong ball moving East at a speed of 4 m/s collides with a stationary bowling ball. The Ping-Pong ball bounces back to the
In-s [12.5K]

Answer:

They experience the same magnitude impulse

Explanation:

We have a ping-pong ball colliding with a stationary bowling ball. According to the law of conservation of momentum, we have that the total momentum before and after the collision must be conserved:

p_i = p_f\\p_p + p_b = p'_p+p'_b

where

p_p is the initial momentum of the ping-poll ball

p_b is the initial momentum of the bowling ball (which is zero, since the ball is stationary)

p'_p is the final momentum of the ping-poll ball

p'_f is the final momentum of the bowling ball

We can re-arrange the equation as follows

p_p - p'_p = p_b'-p_b

or

-\Delta p_p = \Delta p_b

which means

|\Delta p_p | = |\Delta p_b| (1)

so the magnitude of the change in momentum of the ping-pong ball is equal to the magnitude of the change in momentum of the bowling ball.

However, we also know that the magnitude of the impulse on an object is equal to the change of momentum of the object:

I=\Delta p (2)

Therefore, (1)+(2) tells us that the ping-pong ball and the bowling ball experiences the same magnitude impulse:

|I_p| = |I_b|

4 0
4 years ago
In a real system of levers, wheels, or pulleys, the AMA is less than the IMA because _____.
grandymaker [24]
In a real system of levers, wheel or pulleys, the AMA (actual mechanical advantage) is less than the IMA (ideal mechanical advantage) because of the presence of friction.

In fact, the IMA and the AMA of a machine are defined as the ratio between the output force (the load) and the input force (the effort):
IMA= \frac{F_{out}}{F_{in}}
however, the difference is that the IMA does not take into account the presence of frictions, while the AMA does. As a result, the output force in the AMA is less than the output force in the IMA (because some energy is dissipated due to friction), and the AMA is less than the IMA.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The magnitude of the vectors f~ is 27 n, the force on the right is applied at an angle 58◦ and the the mass of the block is 54 k
    11·1 answer
  • In Thomson's experiments with electron beams, when the magnetic force FM balanced the force of the electric field Fe, the veloci
    11·1 answer
  • Please help in finding the Total Resistence, Total Current, Req Current Center of Parallel and V40 olms
    14·1 answer
  • An inductor with an inductance of 3.00 H and a resistor with a resistance of 14.0 Ω are connected to the terminals of a battery
    6·2 answers
  • How do warm ocean currents affect the weather?
    12·1 answer
  • A train's velocity is slowly decreasing as it approaches a station. About 1 km before it reaches the station, several stowaways
    5·1 answer
  • You want to calculate how long it takes a ball to fall to the ground from a height of 20 m. Which equation can you use to calcul
    11·1 answer
  • A gazelle is running at a constant speed of 19.3 m/s toward a motionless hidden cheetah. At the instant the gazelle passes the c
    8·1 answer
  • Answer 4 and I’ll give brainlist
    13·1 answer
  • A dart is thrown from 1.50 m high at 10.0 m/s toward a target 1.73 m from the ground. At what angle was the dart thrown?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!