4 years ago

Which characteristic would you expect from a sample with a pH of 9

Physics

1 answer:

Verizon [17]4 years ago

7 0

I would expect it to be slightly basic.

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To solve this problem we will apply the concepts related to the calculation of power, from the two electrical forms:

$P = VI$

$P = \frac{V^2}{R}$

Here,

V = Voltage

I = Current

R= Resistance

P = Power

PART A)

$R = \frac{V^2}{P}$

Replacing,

$R = \frac{(120V)^2}{150W}$

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Resistance of bulb is $96\Omega$

PART B)

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3 years ago

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an ice skater applies a horizontal force to a 20.-kilogram block on frictionless, level ice, causing the block to accelerate uni

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The only vertical forces are weight and normal force, and they balance since the surface is horizontal. The horizontal forces are the applied force (uppercase F) in the direction the block slides and the frictional force (lowercase f) in the opposite direction.

Apply Newton's 2nd Law in the horizontal direction:
ΣF = ma
F - f = ma
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F - µmg = ma
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