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Leona [35]
3 years ago
9

How much resistance does led bulb in a 4.5 volt flashlight provide if it draws .05 amps of current

Physics
1 answer:
marishachu [46]3 years ago
5 0

Answer:

90 Ω

Explanation:

Ohm's law states voltage is the product of current and resistance:

V = IR

Given V = 4.5 V and I = 0.05 A:

4.5 V = (0.05 A) R

R = 90 Ω

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A small 1.0 kg steel ball rolls west at 3.0 m/s collides with a large 3.0 kg ball at rest. After the collision, the small ball m
77julia77 [94]

Answer:

The direction of the momentum of the large ball after the collision with respect to east is 146.58°.

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Given that,

Mass of large ball = 3.0 kg

Mass of steel ball = 1.0 kg

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After collision,

Velocity = 2.0 m/s

Using conservation of momentum

m_{1}u_{1}+m_{2}u_{2}=m_{1}v_{1}+m_{2}v_{2}

3.0\times0+1.0\times(3.0)(-i)=1.0\times2(-j)+3.0\times v_{2}

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The direction of the momentum with respect to east

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