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Jlenok [28]
3 years ago
6

Strong forces

Physics
1 answer:
sdas [7]3 years ago
6 0

Strong forces:

- are forces holding nucleons together

- are independent of electric charge

- act only over a very short distance

So, correct answer is 4) all of these

Explanation:

The strong force is one of the 4 fundamental forces of nature. It is responsible for holding the nucleons (protons and neutrons) together into the nucleus of the atom.

In fact, the protons inside the nucleus of an atom experience a repulsive, electrostatic force between each other: if this force was not balanced, the protons will simply fly away from each other, and the nucleus would break apart, so no nucleus could exist.

The strong force acts to prevent this effect: the strong force is attractive at such short scales, and it holds the protons and the neutrons together. It is independent of the electric charge: in fact, it acts in the same way on protons and neutrons, being attractive in both cases. Also, the strong force acts only over very short distances, so it acts only inside the nucleus of an atom.

Therefore, all the statements are correct, so the correct option is

4) all of these

#LearnwithBrainly

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g100num [7]
The amount of energy in the universe is remaining constant .

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3 0
3 years ago
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If you told a policeman about a car traveling 44.704 m/s (100 mph) that was traveling in an eastward direction, you would be des
Tpy6a [65]

Answer:

Velocity

Explanation:

You would be describing the velocity of the car.

Velocity in physics is defined as Vector quantity that describes the displacement of an object with respect to the time it takes to attain it. Displacement is the addition of direction to the speed of an object. The displacement is noted in the question, "traveling eastward". While it is stated that the car travels at 44.704 m/s. Ordinarily, it would have been tagged speed, if not for the direction added to it which makes it velocity.

I hope you understand.

5 0
3 years ago
A standard biological microscope is required to have a magnification of 200Ã. what is the focal length of the objective?
NISA [10]

Answer:

The focal length of the objective is L/20.

Explanation:

Given that,

Magnification of the standard biological microscope, m = 200

Let the magnification of the eyepiece is, m_e=10

Let m_o is the magnification of objective lens. The formula of the magnification is given by :

M=m_o\times m_e\\\\200=m_o\times 10\\\\m_o=20

The formula of the magnification is given by :

M=\dfrac{L}{f_o}m_e

L is length of microscope

f_o is focal length of the objective

f_o=\dfrac{Lm_e}{M}\\\\f_o=\dfrac{10L}{200}\\\\f_o=\dfrac{L}{20}

So, the focal length of the objective is L/20.

7 0
3 years ago
Two capacitors with capacitances of 1.0 m F and 0.50 m F, respectively, are connected in series. The system is connected to a 10
forsale [732]

Answer:

Therefore energy is stored in the 1.0 mF capacitor is 5.56×10⁻⁹ J

Explanation:

Series capacitor: The ending point of a capacitor is the starting point of other capacitor.

If C₁ and C₂ are connected in series then the equivalent  capacitance is C.

where     \frac{1}{C} =\frac{1}{C_1}+\frac{1}{C_2}

Given that,

C₁ = 1.0 mF=1.0×10⁻³F  and  C₂ = 0.50mF=0.50×10⁻³F  

If C is equivalent capacitance.

Then    \frac{1}{C} =\frac{1}{1.0}+\frac{1}{0.5}

\Rightarrow \frac{1}{C} =\frac{3}{1}

\Rightarrow C=\frac{1}{3} mF

Again given that the system is connected to a 100-v battery.

We know that

q=Cv

q= charge

C= capacitor

v= potential difference

Therefore

q=(\frac{1}{3} \times 10^{-3}\times10) C

 =\frac{10^{-2}}{3} C

The electrical potential energy stored in a capacitor can be expressed

U=\frac{q^2C}{2}

q= charge

c=capacitance of a capacitor

Therefore energy is stored in the 1.0 mF capacitor is

U=\frac{q^2C_1}{2}

\Rightarrow U=\frac{(\frac{10^{-2}}{3})^2\times 10^{-3} }{2}

\Rightarrow U= 5.56\times 10^{-9} J

 

8 0
3 years ago
What’s the correct answer, d is false .
Alina [70]

I'd Say B :) Your Welcome LOL!!!!!

4 0
4 years ago
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