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cluponka [151]
4 years ago
13

If two lightbulbs are parallel to each other, they have the same brightness. If the same two lightbulbs are put in series with e

ach other, they also have the same brightness but are dimmer than when they are in parallel. Explain why.
Physics
1 answer:
djverab [1.8K]4 years ago
6 0

Answer:

Explanation:

The bulbs becomes dimmer because effective resistance of the circuit increases since the resistance of the circuit in series connection involves adding the individual resistance compared to in parallel connection where the effective resistance = 1 / R1 + 1/R2 = R1 R2 / ( R2 + R1). The brightness remains the same because the lightbulbs must be of the same resistance. Also using ohm's law

V = IR

I = V / R

I is inversely proportional to the current in the circuit so as R, effective resistance of the circuit increases, I, current decreases  and vice versa

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6 0
3 years ago
Nightmares occur during ___ sleep
sladkih [1.3K]
Happens during rim sleep
3 0
3 years ago
Momentum ap physics 1
11111nata11111 [884]

Answer:

The correct option is;

B. Object X travels at -2 m/s and object Y travels at 4 m/s after the spring is no longer compressed

Explanation:

The given parameters are;

The mass of object Y = M

The mass of object X = 2·M

The initial velocity of object X and object Y = 0 m/s

Let A represent the velocity of object X after the spring is released and B represent the velocity of object Y after the spring is released, therefore, by the principle of the conservation of linear momentum, we have;

(M + 2·M) × 0 = M × B + 2·M × A

∴ (M + 2·M) × 0 = 0 = M × B + 2·M × A

M × B = -2·M × A

∴ B = -2·A

Therefore, the velocity of the object Y = -2 × The velocity of the object X

Whereby the velocity of the object X = -2, The velocity of the object Y = -2 × -2 = 4

Which gives, object X travels at -2 m/s and object Y travels at 4 m/s after the spring is no longer compressed.

8 0
3 years ago
Hey! anybody knows the answer then help me i will mark your answer!!!
Volgvan

10/9

Explanation:

option 2 is the correct answer

8 0
3 years ago
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