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3 years ago

1. A drop of oil of volume 10-10 m spreads out on water to

Physics

1 answer:

ankoles [38]3 years ago

5 0

Answer:

318.3 nm

Explanation:

We approximate the circular film as a cylinder of height h and radius, r. Its volume V = πr²h. Since this volume equals the volume of the oil drop, the height of the circular film is thus h = V/πr²

V = 10⁻¹⁰ m³ and r = 10 m

Substituting into h, we have

h = 10⁻¹⁰ m³/π(10)²

= 0.3183 × 10⁻¹² m

= 3183 × 10⁻⁹ m

= 318.3 nm

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rjkz [21]

Answer:

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3 years ago

How will the electrostatic force between two electric charges change if the first charge is doubled and the second charge is onl

Vinvika [58]

Answer:

B) $\frac{2}{3}$

Explanation:

The electric force between charges can be determined by;

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F = $\frac{2}{3}$ x $\frac{kq}{r^{2} }$

The electric force between the given charges would change by $\frac{2}{3}$ .

4 0

3 years ago

4. A student wants to determine what type of cereal his classmates like best. He buys 3 boxes of his most favorite puffed rice c

Ann [662]

D
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3 years ago

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Andru [333]

Answer:

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Explanation:

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2 years ago

Three resistors of 100 W, 3900 W, and 1000 W are connected in series across a 200-V battery. What is the voltage drop across the

Gala2k [10]

Answer:

40 V

Explanation:

I will assume that the resistors are

100 and 3900 and 1000 OHMS <=====(NOT W)

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I = V / R so the total current will be 200 v / 5000 ohms = .04 amps

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7 0

2 years ago