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Yakvenalex [24]
2 years ago
10

If a boy rides his bicycle 100 meters in 20 seconds to the end of the street how fast did he ride his bike

Physics
1 answer:
Gekata [30.6K]2 years ago
5 0
5 meters per second
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it is320 m.

Explanation:

by formula

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Isn't love a social construct?

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Two light bulbs have resistances of 400 Ω and 800 ΩThe two light bulbs are connected in series across a 120- V line. Find the cu
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1) Current in each bulb: 0.1 A

The two light bulbs are connected in series, this means that their equivalent resistance is just the sum of the two resistances:

R_{eq}=R_1 + R_2 = 400 \Omega + 800 \Omega=1200 \Omega

And so, the current through the circuit is (using Ohm's law):

I=\frac{V}{R_{eq}}=\frac{120 V}{1200 \Omega}=0.1 A

And since the two bulbs are connected in series, the current through each bulb is the same.

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The power dissipated by each bulb is given by the formula:

P=I^2 R

where I is the current and R is the resistance.

For the first bulb:

P_1 = (0.1 A)^2 (400 \Omega)=4 W

For the second bulb:

P_1 = (0.1 A)^2 (800 \Omega)=8 W

3) 12 W

The total power dissipated in both bulbs is simply the sum of the power dissipated by each bulb, so:

P_{tot} = P_1 + P_2 = 4 W + 8 W=12 W

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2 years ago
When the medium is uniform, how do light waves pass through it?
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The correct answer is, A) Straight line motion

I took the quiz

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Do you think that the formation of a rainbow is more a demonstration of the wave-like or particle-like behavior of light
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The formation of a rainbow is more a demonstration of the wave-like behavior of light.

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2 years ago
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