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
LUCKY_DIMON [66]
3 years ago
8

The terminals of a 1.30 mF parallel-plate vacuum capacitor is connected to a battery that keeps a voltage of 29.6 V across the p

lates. Then, without disconnecting the battery, a piece of material with dielectric constant of 3.51 is inserted between the plates. After inserting the dielectric, how much energy (in Joules) is stored in the capacitor?

Physics
2 answers:
lapo4ka [179]3 years ago
3 0

Answer:

The energy stored in the capacitor after replacing the dielectric material = 2.00 J

Explanation:

The energy stored in a capacitor is given by

E = ½CV²

where C = capacitance of the capacitor; initially with vacuum as dielectric material is equal to 1.30 mF

V = voltage across the capacitor = 29.6 V

The capacitance of a capacitor is also given as

C = (Aε/d)

A = Cross sectional Area of the capacitor

d = distance between the plates of the capacitor

ε = permissivity of material between the plates of the capacitor

ε = kε₀

k = relative permissivity

ε₀ permissivity of vacuum.

If the Cross sectional Area of the capacitor and the distance between the plates of the capacitor are constant, it is evident that the capacitance of the capacitor is directly proportional to the permissivity of the dielectric material.

C₀ = (Aε₀/d) = 1.30 mF

C = (Aε/d) = (kAε₀/d) = kC₀

For the is question, the relative permissivity = 3.51

C = 3.51 × 1.30 mF = 4.563 mF = 0.004563 F

Energy stored in a capacitor is still

E = ½CV²

C = 4.563 mF = 0.004563 F

V = 29.6 V

E = (1/2)(0.004563)(29.6²)

E = 1.99895904 J = 2.00 J

Hope this Helps!!!

Ludmilka [50]3 years ago
3 0

Answer:

Energy stored in capacitor with new dielectric is 1.998 joules approximately 2 joules

Explanation:

Detailed explanation and calculation is shown in the image

You might be interested in
A boy of mass 50 kg exerts a pressure of 25000 pa calculate the area
gtnhenbr [62]

Answer: A = 0.02 m²

Explanation: Solution:

Pressure is expressed in the formula:

P = F / A       where F = mg

  = mg /A

  = 50 kg ( 9.8 m/s²) / 25000 Pa

  =  0.02 m²

3 0
2 years ago
use the exploration to explain the difference between observed motion, when force is applied in a direction which is same direct
Anika [276]

Answer:

When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement. If you throw a ball, you are pushing on it to start its movement. If you drop an object, the force of gravity causes it to move.Answer:
When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement. If you throw a ball, you are pushing on it to start its movement. If you drop an object, the force of gravity causes it

Explanation:

5 0
2 years ago
2.
koban [17]

The question is not well presented.

There is  ______ shift in sound  frequency for observers towards  whom the source is approaching.

Answer:

The  gap should be filled with an apparent upward

Explanation:

The Doppler effect (also referred to as the Doppler shift) is the difference in frequency of a wave when related to an observer who has a relative movement to the wave source

The Doppler effect can be observed to occur with all types of waves - most notably water waves, sound waves, and light waves

The Doppler effect describes sound as an effect which is produced from a moving source of wave.

According to the Doppler effect;

When the source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching.

3 0
3 years ago
A car traveling 85 km/h is 250 m behind a truck<br> traveling 73 km/h.
amm1812

Time needed = t = 20.83 s

<h3>Further explanation</h3>

Given

car speed = 85 km/h

truck speed = 73 km/h

Required

the time it takes for the car to reach the truck

Solution

When the car reaches the truck, the distance between them will be the same

x car - 250 m = x truck

General formula for distance (d) :

d = v.t

So the equation becomes :

85t-250 = 73t

12t=250

t = 20.83 s

8 0
3 years ago
The nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to about 4.1 x 103 Calories. If a
Luba_88 [7]

Answer:

t = 70.13 hours

Explanation:

As we know that 1 lb fat can be used to expend 4.1 k Calorie of energy

so here we know that we have to use 7.56 lb of body fat

so here the total energy that is to be utilized is given as

Q = (4.1 \times 10^3)(7.56)

so we will have

Q = 30996 Calorie

now we know that runner expends the energy at rate of 1850 kJ/h

so we have

E = 1850 \times 10^3 kJ/h

so it is

E = 0.44 \times 10^3 calorie/h

now we know that time to burn this energy is given as

t = \frac{Q}{E}

t = \frac{30996}{0.44 \times 10^3}

t = 70.13 hours

5 0
3 years ago
Other questions:
  • Assume the population of a large city like New York City is about 4 × 10^6 people, with about 1.97 people per household. Approxi
    13·1 answer
  • An electron moving at 3.94 103 m/s in a 1.23 T magnetic field experiences a magnetic force of 1.40 10-16 N. What angle does the
    12·1 answer
  • What is the path of an electron moving at 4 000 m/s perpendicular to a magnetic field of 1.5 T? (me = 9.11 x 10^-31kg)
    13·1 answer
  • What’s the correct answer
    15·1 answer
  • PLEASE HELP An object is thrown upward with an initial velocity of 32.1 m/s. What is its velocity in 4.0 s? (use g = 9.81 m/s2).
    7·1 answer
  • ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.
    6·2 answers
  • In order for a satellite to move in a stable circular orbit of radius 6588km at a constant speed, its centripetal acceleration m
    14·1 answer
  • A man pushes a lawn mower with a force of 25 newtons. The lawn mower has a mass of 17 kilograms and the handle makes an angle of
    6·1 answer
  • ____ is the study of things getting faster as they move.
    5·2 answers
  • A spacecraft has a momentum of 20,000 kg-m/s, and a mass of 250 kg. What is the magnitude of its velocity?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!