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ASHA 777 [7]
3 years ago
5

Two pieces of plas- tic, a full ring and a half ring, have the same radius and charge density. Which electric field at the cente

r has the greater magnitude? Discuss and defend your answer.
Physics
1 answer:
wlad13 [49]3 years ago
7 0

Answer: The magnitude of the Electric Field at the centre of both plastic would be equal to Zero {i.e E =0}

Explanation: A plastic either full circle or half is an insulator, and the charges in an insulator cannot move around.

Therefore, thier electric potential p(r) = 0.

Recall that,

Electric field intensity E = first derivative of p(r) with respect to r ( radius).since p(r) = 0, E = 0 inside both plastic.

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How does force and acceleration work together to create motion?
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When a force acts (pushes or pulls) on an object, it changes the object's speed or direction (in other words, makes it accelerate). The bigger the force, the more the object accelerates. When a force acts on an object, there's an equal force (called a reaction) acting in the opposite direction.
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Which example describes voluntary muscle movement?
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A voluntary muscle movement would be like purposely flexing you arm to show off muscles or to use your muscles to do a push up. Basically when you chose to do something

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Which of the waves has the smallest amplitude?
balandron [24]

Answer:

I think its the Blue wave, im not sure so dont take my word for it.

Explanation:

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3 years ago
In 1898, the world land speed record was set by Gaston Chasseloup-Laubat driving a car named Jeantaud. His speed was 39.24 mph (
FromTheMoon [43]

Answer:

the acceleration a^{\to} = (0.0159 \ \ m/s^2 )i

Explanation:

Given that:

the initial speed v₁ = 0 m/s i.e starting from rest ; since the car accelerates at a distance Δx = 6 miles in order to teach that final speed v₂ of 63.15 km/h.

So;  the acceleration for the first 6 miles can be calculated by using the formula:

v₂² = v₁² + 2a (Δx)

Making acceleration  a the subject of the formula in the above expression ; we have:

v₂² - v₁² = 2a (Δx)

a = \dfrac{v_2^2 - v_1^2 }{2 \Delta x}

a = \dfrac{(63.15 \ km/s)^2 - (0 \ m/s)^2 }{2 (6 \ miles)}

a = \dfrac{(17.54 \ m/s)^2 - (0 \ m/s)^2 }{2 (9.65*10^3 \ m)}

a =0.0159 \ m/s^2

Thus;

Assume the car moves in the +x direction;

the acceleration a^{\to} = (0.0159 \ \ m/s^2 )i

7 0
3 years ago
Two similar pyramids have base areas of 12.2 cm2 and 16 cm2. the surface area of the larger pyramid is 56 cm2. what is the surfa
Jlenok [28]

The surface area of the smaller pyramid is determined as 42.7 cm².

<h3>Area of pyramids</h3>

The base area of the two similar pyramid is given as follows;

Base area of large pyramid = 16 cm²

Base area of smaller pyramid = 12.2 cm²

<h3>Surface area of the similar pyramids</h3>

The surface area of the smaller pyramid is calculated as follows;

s₁/b₁ = s₂/b₂

s₁/12.2 = 56/16

s₁ = 42.7 cm²

Thus, the surface area of the smaller pyramid is determined as 42.7 cm².

Learn more about base area of pyramids here: brainly.com/question/16060915

#SPJ4

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