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SVETLANKA909090 [29]
3 years ago
15

An ideal parallel plate capacitor is charged by connecting it to a battery. The battery is then removed so that charges may no l

onger enter onto or exit from the plates of the capacitor. There is nothing between the capacitor plates. As the plates are moved closer together, the magnitude of the electric field between them:_________
a. decreases
b. increases
c. remains the same
Physics
1 answer:
OLga [1]3 years ago
5 0

Answer:

c. remains the same

Explanation:

The capacitance of a capacitor is can be represented as;

C = Q/V

There will be no charge flow from the battery to the capacitor or vice versa if the battery is disconnected.

Due to energy conservation, the energy contained and stored in a capacitor will continue to retain and be the same, since an increase in capacitance reduces the voltage, resulting in the same final energy stored.

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A truck initially traveling at a speed of 22 m/s increases at a constant rate of 2.4 m/s^2 for 3.2s. What is the total distance
FinnZ [79.3K]

Answer:

82.7 m

Explanation:

u= 22m/s

a= 2.4 m/s^2.

t= 3.2 secs

Therefore the distance travelled can be calculated as follows

S= ut + 1/2at^2

= 22 × 3.2 + 1/2 × 2.4 × 3.2^2

= 70.4 + 1/2×24.58

= 70.4 + 12.29

= 82.7 m

Hence the distance travelled by the truck is 82.7 m

6 0
3 years ago
A 1.5-kilogram cart initially moves at 2.0 meters per second. It is brought to rest by a constant net force in 0.30 second. What
AnnZ [28]
Acceleration = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning.

The cart's acceleration is

                               (0 - 2 m/s) / (0.3 sec)

                           = ( -2 / 0.3 ) (m/s²)  =  -(6 and 2/3) m/s² .

Newton's second law of motion says

                             Force = (mass) x (acceleration) .

For this cart:      Force = (1.5 kg) x ( - 6-2/3 m/s²)

                                       = ( - 1.5 x 20/3 ) (kg-m/s²)

<span>                                       =      </span>- 10 newtons .

<span>The force is negative because it acts opposite to the direction </span>
<span>in which the cart is moving, it causes a negative acceleration, </span>
<span>and it eventually stops the cart.</span>
6 0
3 years ago
A baseball is thrown at an angle of 40.0° above
monitta
Vector trigonometry can be used for this problem. Since the horizontal component is 12 meters per second, this is technically the hypotenuse (actual initial velocity) multiplied to cosine of 40 degrees. Therefore, to find the hypotenuse, we must divide 12 by cosine 40degrees. cos(40)= 0.766, and 12/0.766 = approximately 15.664, therefore our answer is (3) 15.7 m/s
7 0
4 years ago
Read 2 more answers
What is weightlessness ? Mention its condition​
kolbaska11 [484]

Answer:

Weightlessness, condition experienced while in free-fall, in which the effect of gravity is canceled by the inertial (e.g., centrifugal) force resulting from orbital flight. The term zero gravity is often used to describe such a condition.

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3 years ago
Haley is trying to pull an object upward. The below forces are acting on the object.
worty [1.4K]

Answer:

↓ 500N

Explanation:

3 0
3 years ago
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