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Grace [21]
3 years ago
9

A. Consider a charge Q fixed in place at the origin that creates an electric field in the surrounding region. We call a charge w

hich gives rise to the electric field the source charge. You bring a small charge q from infinite distance to a distance r from the source charge adiabatically, that is, infinitely slowly such that the electric field due to the source charge is not disturbed. This small charge q is called a test charge. Now answer the following questions. All of your answers will be in terms of q, Q, r and the dielectric constant εo, as appropriate and be careful about your signs. 1. What is the electric potential energy of the charge q as a function of the distance r away from
Physics
1 answer:
zvonat [6]3 years ago
6 0

Answer:

U = k Q q / r

Explanation:

The potential electric energy for a point charge is

       U = k q₁ q₂ / r

Where k is the Coulomb constant, q are the electric charges and r is the distance between them

Let's replace our values

     U = k Q q / r

Note that the positive power is because the two charges have the same sign, so we have to do a job to move the test load and also a scalar

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How does the egg drop project apply to everyday life​
sineoko [7]

Answer:

Explanation:

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2 years ago
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A toroid with a square cross section 3.0 cm ✕ 3.0 cm has an inner radius of 25.1 cm. It is wound with 600 turns of wire, and it
coldgirl [10]

Answer:

B = 1.353 x 10⁻³ T

Explanation:

The Magnetic field within a toroid is given by

B = μ₀ NI/2πr, where N is the number of turns of the wire, μ₀ is the permeability of free space, I is the current in each turn and r is the distance at which the magnetic field is to be determined from the center of the toroid.

To find r we need to add the inner radius and outer radius and divide the value by 2. Hence,

r = (a + b)/2, where a is the inner radius and b is the outer radius which can be found by adding the length of a square section to the inner radius.

b = 25.1 + 3 = 28.1 cm

a = 25.1 cm

r = (25.1 + 28.1)/2 = 26.6 cm = 0.266m

B = 4π x 10⁻⁷ x 600 x 3/2π x 0.266

B = 1.353 x 10⁻³ T

The strength of the magnetic field at the center of the square cross section is 1.3 x 10⁻³ T

5 0
3 years ago
What does a velocity measurement include that a speed measurement does not? A: Time B:direction C:distance D: acceleration​
andrew-mc [135]

Answer:

B. Direction

Explanation:

Speed is a scalar quantity and doesn't keep track of direction : Velocity is a vector quantity and is direction aware.

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A tuning fork is struck and is vibrating at a single frequency. If a second tuning fork with the same frequency is placed near t
irina1246 [14]
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