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Art [367]
2 years ago
12

Why can you get a shock if you touch a metal doorknob after walking across a wool carpet? (1 Point) You have gained electrons; t

he doorknob has no electrons. You have gained neutrons; the doorknob has fewer electrons. You have lost electrons; the doorknob has many electrons. You have gained electrons; the doorknob has many electrons.
Physics
1 answer:
GenaCL600 [577]2 years ago
6 0

Why can you get a shock if you touch a metal doorknob after walking across a wool carpet is because you have gained neutrons; the doorknob has fewer electrons. This is further explained below.

<h3>What are electrons?</h3>

Electrons can be defined as a stable subatomic particles with a negative electrical charge that is found in all atoms and serves as the major carrier of electricity in solids.

In conclusion, You have an unbalanced charge, while the doorknob is neutral. you have gained neutrons; the doorknob has fewer electrons.

Read more about Election

brainly.com/question/1657299

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The illustration in figure below shows a uniform metre rule weighing 30 N pivoted on a wedge placed under the 40 cm mark and car
Nitella [24]

Answer:

W = 30 N

Explanation:

Applying the summation of torques about the wedge for equilibrium, taking the clockwise direction as negative. Since the ruler is balanced horizontally about the wedge. Therefore, the summation of all torques acting about the wedge must be equal to zero.

(70\ N)(40\ cm - 10\ cm)-(30\ N)(50\ cm-40\ cm)-(W)(100\ cm - 40\ cm) = 0\\W(60\ cm) = (70\ N)(30\ cm)-(30\ N)(10\ cm)\\\\W = \frac{1800\ N.cm}{60\ cm}

<u>W = 30 N</u>

6 0
2 years ago
Name the physical quantity and write its SI unit which gives the slope Of I-V graph?
Margarita [4]

Slope of I-V graph is Resistance.

Its S.I. unit is Ohm.

The symbol of ohm is Ω.

4 0
3 years ago
The instruments attached to a weather balloon have a mass of 5 kg. The balloon is released and exerts an upward force of 106 N o
Illusion [34]

Answer:

acceleration of the balloon is 11.4 m/s²

and

The instruments accelerate downwards at 9.8 m/s²

Explanation:

given data

mass = 5 kg

force = 106 N

acceleration of gravity = 9.8 m/s²

to find out

the acceleration of the balloon and the instruments

solution

we find weight of the instruments that is

weight W = mg

here m is mass and g is acceleration of gravity

W = 5 ×9.8

weight W = 49 N

and

so net upward force on the instruments is

net upward force F = 106 - 49

net upward force F = 57 N

and

The acceleration of the balloon is

Force = ma

57 = 5 a

a = 11.4 m/s²

acceleration of the balloon is 11.4 m/s²

and

The instruments accelerate downwards at 9.8 m/s²

6 0
3 years ago
Read 2 more answers
6
Licemer1 [7]

Answer:

water and air

Explanation:

The examples of medium from this problem is water and air.

A medium is an agency or a means of propagating energy, waves or even facilitating a chemical reaction.

Fluids are very good medium in chemistry for chemical reactions. The two most common media used are air and water.

In physics, a vacuum is an empty space that has been evacuated. It also serves as a medium to study some physical phenomenon.

6 0
3 years ago
A double slit experiment is conducted in air using a laser at 532nm and a slit separation of 20um. What happens to the fringe sp
Reika [66]

Answer:

Option B - The fringe spacing will increase

Explanation:

We are given;

Wavelength; λ = 532nm

slit separation; d = 20um

For double-slit experiment, the fringe width is given by the expression;

β = λD/d

Where;

β is the fringe width

λ is the wavelength

D is the distance between the screen and the slit

d is the slit separation

Now, when immersed in water, the slit separation distance will decrease.

Now, from the fringe width equation, when "d" decreases, it means that we will have a bigger value of fringe width.

Thus, as slit separation decreases, the fringe width increases.

3 0
3 years ago
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