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
miv72 [106K]
3 years ago
11

The flash unit in a camera uses a special circuit to "step up" the 3.0 V from the batteries to 290 V, which charges a capacitor.

The capacitor is then discharged through a flashlamp. The discharge takes 10 μs, and the average power dissipated in the flashlamp is 1.0×105 W. What is the capacitance of the capacitator?
Physics
2 answers:
Margaret [11]3 years ago
3 0

Answer:

Therefore the capacitance of the capacitor is 2.38 * 10⁻⁵F

Explanation:

We apply the concepts related to Power and energy stored in a capacitor.

By definition we know that power is represented as

P = \frac{E}{t}

Where,

E= Energy

t = time

to find the Energy we have,

E = P*t

P = 1*10^5Wt = 10*10^{-6}s

E= (1*10^5)(10*10^{-6})E = 1.0J

With the energy found we can know calculate the Capacitance in a capacitor through the energy for capacitor equation, that is

E=\frac{1}{2}CV^2

C = \frac{2E}{V^2}\\\\\\\frac{2\times 1 }{290^2 - 3^2\\} \\= 2.38 \times 10^-^5F

Therefore the capacitance of the capacitor is 2.38 * 10⁻⁵F

Salsk061 [2.6K]3 years ago
3 0

Answer:

24 μF.

Explanation:

Given:

Time, t = 10 μs

P = 1.0×105 W

V1 = 3 V

V2 = 290 V

Power, P = Energy/time

Energy = 1/2 × C × V^2

1 × 10-5 × 1 × 10^-5 = 1/2 × C × (290^2 - 3^2)

C = 2/84091

= 2.38 × 10^-5 F

= 24 μF

You might be interested in
Kalea throws a baseball directly upward at time t = 0 at an initial speed of 13.7 m/s. How high h does the ball rise above its r
Trava [24]

Answer:

h = 9.57 seconds

Explanation:

It is given that,

Initial speed of Kalea, u = 13.7 m/s

At maximum height, v = 0

Let t is the time taken by the ball to reach its maximum point. It cane be calculated as :

v=u-gt

u=gt

t=\dfrac{u}{g}

t=\dfrac{13.7}{9.8}

t = 1.39 s

Let h is the height reached by the ball above its release point. It can be calculated using second equation of motion as :

h=ut+\dfrac{1}{2}at^2

Here, a = -g

h=ut-\dfrac{1}{2}gt^2

h=13.7\times 1.39-\dfrac{1}{2}\times 9.8\times (1.39)^2

h = 9.57 meters

So, the height attained by the ball above its release point is 9.57 meters. Hence, this is the required solution.

7 0
3 years ago
I forgot this someone help
dexar [7]

Answer:

A. water + carbon dioxide + sunlight = oxygen + <u>glucose </u><u>!</u>

6 0
2 years ago
Forces and pres
Sliva [168]

Answer:

A.  It is zero.

Explanation:

D Later in the day, more power is developed in lifting each box. 12 A manometer is used to indicate the pressure in a steel vessel, as shown in the diagram. What value does the liquid manometer give for the pressure in the vessel? It is zero

5 0
1 year ago
How much wood could a wood chuck chuck if a wood chuck could chuck wood
krek1111 [17]

Answer:

As much wood as a woodchuck could chuck, If a woodchuck could chuck wood.

Explanation:

3 0
2 years ago
A cannon, positioned on a hill, shoots a cannonball horizontally at 23 m/s. The cannonball hits the stone wall 1.96 m below the
irina [24]

Answer: 14. 49 m

Explanation:

We can solve this problem with the following equations:

x=V_{o} cos \theta t (1)

y-y_{o}=V_{o} sin \theta t-\frac{1}{2}gt^{2} (2)

Where:

x is the horizontal distance between the cannon and the ball

V_{o}=23 m/s is the cannonball initial velocity

\theta=0\° since the cannonball was shoot horizontally

t is the time

y=0 is the final height of the cannonball

y_{o}=1.96 m is the initial height of the cannonball

g=9.8 m/s^{2} is the acceleration due gravity

Isolating t from (2):

t=\sqrt{-\frac{2(y-y_{o})}{g}} (3)

t=\sqrt{-\frac{2(0 m-1.96 m)}{9.8 m/s^{2}}} (4)

t=0.63 s (5)

Substituting (5) in (1):

x=(23 m/s) cos(0\°) 0.63 s (6)

Finally:

x=14.49 m

5 0
2 years ago
Other questions:
  • The direction of the magnetic field is parallel to the field line at any point in space. A small compass will point in a directi
    7·1 answer
  • A. Telephone signals are often transmitted over long distances by microwaves. What is the frequency of microwave radiation with
    5·1 answer
  • Which list correctly identifies each particle?
    12·2 answers
  • A material's ability to allow heat or electricity to flow through it...
    14·1 answer
  • A 7382 N piano is to be pushed up a(n) 2.16 m frictionless plank that makes an angle of 22.7 ◦ with the horizontal. Calculate th
    13·1 answer
  • When a wave enters a medium at an angle, leading to a change in the wave, this is an example of what phenomenon?
    14·1 answer
  • The function​ s(t) represents the position of an object at time t moving along a line. Suppose s (2 )equals 146and s (6 )equals
    9·1 answer
  • Help plssssss would be highly appreciate ❤️❤️
    12·2 answers
  • A 3m plank AB of mass 20kg has a center of gravity 2m from end A and rests on supports R1 and R2 both 0,5m from either end. It a
    12·1 answer
  • The rotor in a certain electric motor is a flat, rectangular coil with 80 turns of wire and dimensions 2.50 cm by 4.00 cm . The
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!