2 years ago

Stu wanted to calculate the resistance of a light bulb

2 answers:

5 0

Answer:

Stu's answer was incorrect. According to Ohm's law, R = V/I. This is the equation that should be used to obtain the correct answer, which is 8 ohms.

Explanation:

Nonamiya [84]2 years ago

3 0

Answer:

yes

Explanation:

He used the formula R = VI and obtained an

answer of 2

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An astronaut on a space walk floats a little too far away

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In an experiment, students release a block from rest at the top of an inclined plane. The block slides down the plane through a

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Answer:

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2 years ago

A (1.25+A) kg bowling ball is hung on a (2.50+B) m long rope. It is then pulled back until the rope makes an angle of (12.0+C)o

daser333 [38]

Answer:

F = 0.535 N

Explanation:

Let's use the concepts of energy, at the highest and lowest point of the trajectory

Higher

Em₀ = U = mg y

Lower

$Em_{f}$ = K = ½ m v²

Emo = $Em_{f}$

mg y = ½ m v2

v = √ 2gy

y = L - L cos θ

v = √ (2g L (1-cos θ))

Now let's use Newton's second law n at the lowest point where the acceleration is centripetal

F = ma

a = v² / r

In turning radius is the cable length r = L

F = m 2g (1-cos θ)

Let's calculate

F = 2 1.25 9.8 (1 - cos 12)

F = 0.535 N

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2 years ago