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3 years ago

F. Protons and neutrons

Physics

1 answer:

Readme [11.4K]3 years ago

3 0

Answer:

2. False :

An object that is positively charged has a greater positive charge and a lower negative charge.

3. Will be This :

Q.→ TRUE or FALSE: An object that is negatively charged could contain only electrons with <u>no</u> accompanying protons.

Answer → False :

Negatively charged objects have protons; it's just their number of electrons is greater than their number of protons.

4. False :

An object that is electrically neutral contains neutrons and the same number of unlike charges, i.e., electrons and protons.

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If series Rs = R1 + R2

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3 years ago

Read 2 more answers

The weight of a luggage is 69.3 N on the moon. Find its weight on the Earth.

kiruha [24]

Answer:

415.8N

Explanation:

Given:

weight of a luggage = 69.3 N

But

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3 years ago

A step index fiber has a numerical aperture of NA = 0.1. The refractive index of its cladding is 1.465. What is the largest core

Vladimir [108]

Answer:

diameter = 9.951 × $10^{-6}$ m

Explanation:

given data

NA = 0.1

refractive index = 1.465

wavelength = 1.3 μm

to find out

What is the largest core diameter for which the fiber remains single-mode

solution

we know that for single mode v number is

V ≤ 2.405

and v = $\frac{2*\pi *r}{ wavelength} NA$

here r is radius

so we can say

$\frac{2*\pi *r}{ wavelength} NA$ = 2.405

put here value

$\frac{2*\pi *r}{1.3*10^{-6}} 0.1$ = 2.405

solve it we get r

r = 4.975979 × $x^{-6}$ m

so diameter is = 2 × 4.975979 × $10^{-6}$ m

diameter = 9.951 × $10^{-6}$ m

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3 years ago

Two linear polarizing filters are placed one behind the other, so that their transmission directions are parallel to one another

ale4655 [162]

Answer:

0.5I0

Explanation:

Because once ligh passes though any polarizer 50% of it is gone. The second polarizer is also oriented in the same direction so it passes through with no effect.

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4 years ago