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Basile [38]
3 years ago
14

What is the electric field at the center of the metal ball due only to the charges on the surface of the metal ball? (Express yo

ur answer in vector form.) < Entry field with incorrect answer -244800 , Entry field with correct answer 0 , Entry field with correct answer 0 > N/C
Physics
1 answer:
FrozenT [24]3 years ago
8 0

Answer:

The electric field is zero inside the metal sphere

Explanation:

Gauss's law says: the net flow on any enclosed surface is equal to the value of the charge inside divided by the electrical permittivity

     E = Q / ε

Where Q is thec charge into the surface.

If we apply this to the metal sphere, all the charge is on the surface, so there is no charge inside, therefore, the electric field is zero

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The driver of a car travels at 90 km / h, observes some children playing on the road 50 m away, and applies the brakes, managing
Orlov [11]

Answer:

13,750 N

Yes

Explanation:

Given:

v₀ = 90 km/h = 25 m/s

v = 0 m/s

t = 4 s

Find: a and Δx

a = Δv / Δt

a = (0 m/s − 25 m/s) / (4 s)

a = -6.25 m/s²

F = ma

F = (2200 kg) (-6.25 m/s²)

F = -13,750 N

Δx = ½ (v + v₀) t

Δx = ½ (0 m/s + 25 m/s) (4 s)

Δx = 50 m

6 0
3 years ago
An object 4 cm high is placed 20 cm in front of a convex lens of focal length 12 cm. What is the position and height of the imag
aleksandrvk [35]
It would be 12cm

hope this helps

6 0
3 years ago
If a cars velocity is slowing down is it considered a positive or negative acceleration?
Natali [406]

Answer:

Negative

Explanation:

Observe that the object below moves in the positive direction with a changing velocity. An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).

4 0
3 years ago
_____ is a disorder that results from damage to the brain's motor centers, causing difficulty with motor control so that speech
anygoal [31]

Answer:

Cerebral palsy

Explanation:

Cerebral palsy - it is referred to that disorder which is related to damages that caused permanent disorder in the functioning of body parts.  it affects the proper functioning of muscles thus cause the coordination problem.

it is caused due to abnormalities in the brain that result in the coordination of the body. As it is related to abnormalities in the brain thus it also causes a problem in vision, speaking, hearing, etc

7 0
3 years ago
Sue and jenny kick a soccer ball at exactly the same time. sue's foot exerts a force of 57.6 n to the north. jenny's foot exerts
Alika [10]
It is 17.58 my friennnd
8 0
3 years ago
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