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2 years ago

12

what is the name of the area around a charged object where the object can exert a force on other charged objects?

1 answer:

shusha [124]2 years ago

4 0

Answer:

An electric field is a region around a charged object where the object's electric force is exerted on other charged objects. Electric fields get weaker the farther away they are from the charge. An electric field is invisible. You can use the field line to represent it.

Explanation:

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The magnetic field due to a utility wire is 0.10 mT when you are at a distance of 10 meters from it. What current (in Amperes) f

ale4655 [162]

Answer:

I = 5000 A

Explanation:

We will use Ampere's Law to calculate the current:

$B = \frac{\mu I}{2\pi r}\\\\$

where,

B = Magnetic Field Strength = 0.1 mT = 1 x 10⁻⁴ T

μ = Permeability of Free Space = 4π x 10⁻⁷ N/A²

I = Current = ?

r = radius = 10 m

Therefore,

$1\ x\ 10^{-4}\ T = \frac{(4\pi\ x\ 10^{-7}\ N/A^2)(I)}{2\pi(10\ m)}\\\\I = \frac{(1\ x\ 10^{-4}\ T)(2\pi (10\ m))}{4\pi\ x\ 10^{-7}\ N/A^2}$

<u>I = 5000 A</u>

4 0

3 years ago

The height of the Washington Monument is measured to be 170.00 m on a day when the temperature is 35.0°C. What will its height b

N76 [4]

Answer:

169.98 m

Explanation:

$\alpha$ = Thermal coefficient of marble = $2.5\times 10^{-6}/^{\circ}C$

$L_0$ = Initial length = 170 m

$\Delta T$ = Change in temperature = (-10-35)°C

Change in length is given by

$\Delta L=\alpha L_0\Delta T\\\Rightarrow \Delta L=2.5\times 10^{-6}\times 170\times (-10-35)\\\Rightarrow \Delta L=-0.019125\ m$

The height on the given day will be $170-0.019125=169.98\ m$

3 0

4 years ago

Kilogram and second are called fundamental units why

Digiron [165]

Answer:

It is because they are physical quantities

Explanation:

I think so..

6 0

3 years ago

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What type of weather system brings calm, clear weather?

liq [111]

A High Pressure System

8 0

3 years ago

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A wave with a speed of 437 m/s has a frequency of 28 hertz. What is the length of the wave?

Natasha2012 [34]

Answer: 15.6 metres

Explanation:

Given that:

length of wave (λ)= ?

Frequency of wave F = 28 Hertz

Speed of wave (V) = 437 m/s

The wavelength is the distance covered by the wave in one complete cycle. It is measured in metres, and represented by the symbol λ.

So, apply V = F λ

Make λ the subject formula

λ = V / F

λ = 437 m/s / 28 Hertz

λ = 15.6 m

Thus, the length of the wave is 15.6 metres

6 0

4 years ago