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motikmotik
3 years ago
11

How do protons and electrons determine the properties of an atom?

Physics
2 answers:
Nataly [62]3 years ago
6 0
They determine if it has a negative or positive charge
Amiraneli [1.4K]3 years ago
3 0

Answer:

Well protons will contribute to what we all know as the mass of an atom, the number of protons always determine the exact identity of whatever Element you want to describe or find more about. The Electrons always have a negative charge, But because the atom is electrically Neutral, that must mean that the exact number of the Electrons will always equal up to the number of the Protons.

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How does heat transfer by evaporation?
Nat2105 [25]
It's complicated and hard to explain, but I'll try my best.
Evaporation occurs when a liquid changes to a gas, but only on the surface of the liquid volume. The gas molecules transfer heat to the liquid molecules. An unequal distribution of heat causes some liquid molecules to become gas molecules. It is random and uneven. Energy from the sun also spawns evaporation. When evaporation does happen, the molecules that leave the liquid body takes a lot of heat with it, therefor the average temperature of the liquid decreases. Evaporation depends on heat, humidity, and air movement. Hope that helped :))
3 0
3 years ago
Read 2 more answers
A mechanic uses a mechanical lift to raise a car. The car weighs 11,000 N. The lift raises the car 2.5 m.
KengaRu [80]

Potential energy = (weight) x (height)

After the car has been raised 2.5 meters, it has

                 (11,000) x (2.5) = 27,500 Joules

MORE potential energy than it had before it was lifted.

That's the energy that has to come from the work you do to lift it.

Since no mechanical process is ever 100% efficient, the work required
to accomplish this task is <em>at least  27,500 joules</em>.


5 0
3 years ago
Read 2 more answers
If sin=cos <br>tan=?<br>cot=?<br>​
Nezavi [6.7K]

Answer:

sin=cos

tan=sin/cos

cos=sin

Explanation:

I've just answer what ive known

I hope its hepls to you

6 0
3 years ago
Which of the following is a good example of a contact force? A. Earth revolving around the Sun B. a bridge suspended by cables C
krek1111 [17]

Answer: a bridge suspended by cables

5 0
3 years ago
For a bronze alloy, the stress at which plastic deformation begins is 294 MPa and the modulus of elasticity is 121 GPa. (a) What
FromTheMoon [43]

Answer:

a) load in Newton is 96,138 b) 129.314mm

Explanation:

Stress = force/ area (cross sectional area of the bronze)

Force(load) = 294*10^6*327*10^-6 = 96138N

b) modulus e = stress/ strain

Strain = stress/ e = (294*10^6)/ (121*10^ 9) = 2.34* 10^ -3

Strain = change in length/ original length = DL/ 129

Change in length DL = 129 * 2.34*10^ -3 = 0.31347

Maximum length = change in length + original length = 129.314mm

7 0
3 years ago
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