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Semmy [17]
3 years ago
14

A proton has_charge.

Physics
2 answers:
ladessa [460]3 years ago
8 0

Answer:

a positive charge of 1

Explanation:

electrons have negative charges

Sunny_sXe [5.5K]3 years ago
4 0

Answer: Positive charge

Explanation: Protons are the subatomic particles that are found in the core of an atom. Protons are the only subatomic particle with a positive charge and they determine what kind of element it is.

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If the primary coil of a transformer has 200 turns and is supplied with 120 v ac power, how many turns must the secondary coil h
Oduvanchick [21]
The ratio of the turns to the voltage should be equal
i.e: 200/120 = t/12
so the secondary coil should have 20 turns
5 0
3 years ago
Your friend says that the second law of thermodynamics can't be true because life itself is a highly ordered system that wouldn'
spayn [35]
This topic is actually quite controversial, but the answer in this case would be C. 

Just some food for thought, the 2nd law of thermodynamics entropy of the universe is always increasing, but that doesn't necessarily mean that earth's entropy has to. As long as the net change in entropy of the universe is increasing it doesn't matter if one planet is decreasing a nominal amount. Next, Earth as said is not a closed system and you could argue that the sunlight and energy from the sun is increasing the total energy within the system that is earth meaning that it is increasing in entropy. Next, if you consider increasing entropy as an increase in the number of possible permutations that the universe or parts of the universe can take, then it is completely possible that an ordered planet and life is possible, although rare. This theory explains why there are so many life forms and why entropy is actually increasing when divergent evolution occurs. 
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3 years ago
Why does the evaporation of sweat cool down your skin?
Ne4ueva [31]
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6 0
3 years ago
Read 2 more answers
In Example Suppose the rod stays on the wall in the same position, but the hinge is moved to be at the center of mass position o
navik [9.2K]

Answer:

A

Explanation:

The change in the system’s gravitational potential energy would be zero

4 0
3 years ago
A man of mass 70 kg climbs stairs of vertical height 2.5m. Calculate the work done against the force of gravity. (Take g = 9.81
Alona [7]

Answer:

1716.75 J

Explanation:

<u>Step </u><u>1</u><u>:</u> First check what we are provided with. As per given question we have:

mass (m) = 70 kg, height (h) = 2.5 m and acceleration due to gravity (g) = 9.81 m/s².

<u>Step</u><u> </u><u>2</u><u>:</u> Check what we are asked to find out.

Work done = Change in Potential energy

The stuff required to solve this question is potential energy. Using the formula: P = mgh. Where P is Potential energy, m is mass, g is acceleration due to gravity and h is height.

<u>Step</u><u> </u><u>3</u><u>:</u> Substitute the known values in the above formula.

→ P = 70 × 2.5 × 9.81

→ P = 1716.75 J

Hence, the work done against the force of gravity is 1716.75 J.

3 0
2 years ago
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