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aalyn [17]
3 years ago
13

Calculate the force between charges of 55 × 108 C and 1 × 107C if they are 5 cm apart.?​

Physics
1 answer:
lions [1.4K]3 years ago
6 0

First:

5 cm = 0,05 m

Now, the formula:

F = k * (qq') / r²

Replacing:

F = 9x10⁹ * (55x10⁸ * 1x10⁷) / 0,05²

F = 9x10⁹ * (5,5x10¹⁶ / 2,5x10⁻³)

F = 9x10⁹ * 2,2x10¹⁹

F = 1,98x10²⁹

The force between the charges is 1,98x10²⁹ Newtons.

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No, transparent object let all the light through.

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3 years ago
Define thermodynamics ??? ​
BartSMP [9]

Answer:

The term thermodynamics comes from the Greek words therme (heat)  and dynamis (force)

Explanation:

Thermodynamics can be defined as the science of energy. Thought everything  the world has an idea of what energy is, it's hard to define it precisely.

Energy can be considered as the ability to cause change.

The term thermodynamics comes from the Greek words therme (heat)  and dynamis (force), which corresponds to the most descriptive of the first  efforts to convert heat into energy. At present, the concept is  interpret broadly to include Energy Aspects and their transformations,  including power generation, cooling and relationships  among the properties of matter.

3 0
4 years ago
Youare on a train travelling northat 80.0m/s relative to the ground. The air is still relativetothegroundwhen you hear the whist
AURORKA [14]

To solve this problem we will apply the concepts related to the Doppler effect. This is understood as the change in apparent frequency of a wave produced by the relative movement of the source with respect to its observer. Mathematically this is given as,

f = \frac{v \pm v_r}{v \pm v_s}(f_0)

Here,

v = Speed of the waves in the middle

v_r = Speed of the receiver in relation to the medium (Positive if the receiver is moving towards the transmitter or vice versa)

v_s = Speed of the source with respect to the medium (Positive if the source moves away from the receiver or vice versa)

Our values are given as,

v = 342m/s

f_0 = 262Hz

v_r = 80m/s

f = 350Hz

Replacing,

350 = \frac{342+80}{342-v} (262)

Solving for the velocity of the source,

v = 26.1m/s

Therefore the speed of the other train is 26.1m/s

3 0
3 years ago
15 if an object gains_ it has an electrical charge
Papessa [141]

Answer:

15. electrons

16. electrometer

18. Transformers

24. Power

Explanation:

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  2. The electrons have negative charges and protons have positive charges.
  3. The proton with similar other protons forms the nucleus of an atom. Mostly it doesn't exist freely in nature. it is not easy to knock out a proton from an atom.
  4. Whereas, the electrons were present in the outer sphere if the nucleus of an atom.Compared to a proton, It is easy to remove an electron from an atom.
  5. So, if an object gains some electrons, it acquires some charges.
  6. The amount of such charges can be measured using a device called electrometer.
  7. The flow of electrons is associated with energy. This energy is called electrical energy and it can be converted into other forms of energy.
  8. The rate at which electrical energy is converted to some other forms of energy is called electrical power.
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3 years ago
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Answer:

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Explanation:

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