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love history [14]
3 years ago
8

What does the air of the air capacitor represent in an electrical capacitor?

Physics
1 answer:
Luda [366]3 years ago
6 0
The parallel conducting plates
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A 0.50 kilogram ball is held at a height of 20 meters. What is the kinetic energy of the ball when it reaches halfway after bein
Margarita [4]
Potential energy at any point is (M G H). On the way down, only H changes. So halfway down, half of the potential energy remains, and the other half has turned to kinetic energy. Half of the (M G H) it had at the tpp is (0.5 x 9.8 x 10) = 49 joules.
6 0
3 years ago
Read 2 more answers
Please help me and answer these questions.
jeka57 [31]

Answer:

Answer 2 is iron.

Answer 3 is magnetic induction.

Explanation:

I hope it's helpful!

3 0
3 years ago
Blue light of wavelength 450 nm passes through a diffraction grating with a slit spacing of 0.001 mm and makes an interference p
IceJOKER [234]

Answer:

5 fringes option C

Explanation:

Given:

- The wavelength of blue light λ = 450 nm

- The split spacing d = 0.001 mm

Find:

How many bright fringes will be seen?

Solution:

- The relationship between the wavelength of the incident light, grating and number of bright fringes seen on a screen is derived by Young's experiment as follows:

                                   sin(Q) = n* λ / d

Where, n is the order of bright fringe. n = 0, 1, 2, 3, ....

- We need to compute the maximum number of fringes that can be observed with the given condition and setup. Hence we will maximize our expression above by approximating sin(Q).

                                   sin(Q_max) = 1

                                   Q_max = 90 degree

- Hence, we have:

                                    n = d / λ

- plug values in            n = 0.001 *10^-3 / 450*10^-9

                                    n = 2.222

- Since n order number can only be an integer we will round down our number to n = 2.

- Hence, we will see a pair of bright fringes on each side of central order fringe.

- Total number of fringes = 2*2 + 1 = 5 fringes is total ... Hence, option C

8 0
3 years ago
A box is at rest at the top of a frictionless inclined plane. As the box slides down the ramp where along the ramp would the box
Yuliya22 [10]

Answer:

I would say near the end of the slide.

3 0
3 years ago
A 1.23 x 10^3 kilogram car is traveling east at 25 meters per second. The brakes are applied and the car is brought to rest in 5
ahrayia [7]

Answer:

\text{Magnitude: }30,000\:\text{Ns},\\\text{Direction: opposite direction of car's movement}}

Explanation:

*Edit: The original question states a mass of 1.23\cdot 10^3\:\text{kg}. Since the, the poster has corrected it to 1.20\cdot 10^3\:\text{kg} and therefore the answers have been change to account for the typo.

The impulse-momentum theorem states that the impulse on a object is equal to the change in momentum of the object.

Therefore, we have the following equation:

F\Delta t=\Delta p, where F\Delta t is impulse (another way to find impulse) and \Delta p is change in momentum.

Because the car is being slowed to a rest, its final velocity will be zero, and therefore its final momentum will also be zero. Since momentum is given as p=mv, the car's change in momentum is 1.20\cdot 10^3\cdot 25-0=1230\cdot 25=30,000\:\text{kgm/s}.

As we wrote earlier, this is also equal to the magnitude of impulse on the object. The time it takes to stop the car is actually irrelevant to finding the total impulse. However, if we were to calculated the average applied force on the car, we would need how long it takes to bring it to rest (refer to F\Delta t).

The direction of the impulse must be exactly opposite to the car's direction, since we are slowing it to a stop.

Therefore, the impulse on the car is \boxed{30,750\:\text{Ns, opposite direction of car's movement}}.

3 0
3 years ago
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