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d1i1m1o1n [39]
3 years ago
10

Which has a stronger attractions among its sub microscopic particles of a solid at 25°C or a gas and 25°C

Physics
1 answer:
Pavlova-9 [17]3 years ago
7 0

a gas at 25 C is the answer

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Standing and holding a barbell that has a mass of 100kg at a height of 2m involves being done on the barbell to maintain
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Answer:

1960Joules

Explanation:

Since we are not told what too find, we can as well find the Gravitational Potential Energy.

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The sound of a tuba is very low. Why?
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Answer:

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Explanation:

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8 0
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A voltage of 220V (rms) line to netralvoltage is applied across a three phase Y connected resistive load. Each phase of the Y co
mrs_skeptik [129]

Answer:

Current through each phase Vp = 2.2A

Total three phase power Pt= 1.45kW

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Explanation:

i) Find current through each phase

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Z =100 Ω

I = Vp/Z

 = 220/100

 = 2.2A

ii) Find the total three phase power

for a resistive load, Power, P = VI

Power for each phase is given as:

P = 220 * 2.2

  = 484 W

Total power TP =3* P

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                          = 1452W

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 iii) Find the power factor of the load

Phase angle for a resistive load is 0.

α= 0

Hence, power factor of load = cos α

                                          pf      = cos 0

                                             pf    = 1

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3 years ago
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