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FromTheMoon [43]
3 years ago
6

What is the frequency of a wave travelling at 45.45 m/s with a wavelength of 2 m?

Physics
1 answer:
HACTEHA [7]3 years ago
4 0

Answer:

22.73 Hz

Explanation:

Frequency = 45.45/2 = 22.73 Hz

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A series circuit contains four light bulbs. The switch is opened and one of the bulbs is removed, but not replaced. Then the swi
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Answer:

The three remaining light bulbs will remain dark.

Explanation:

Current can only flow if there is a complete circuit through all of the series elements. With one element removed, no current can flow, so the remaining light bulbs cannot light up.

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3 years ago
What are the issues that hinders efforts to achieve sustainability?
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who will solve environmental problems, who is responsible for environmental problems, and who pays the cost of implementing solutions

Explanation:

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3 years ago
A Van de Graaff generator is charged with 2.82 x 106C of positive charge.
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B becuse that’s is right
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3 years ago
Identify properties of a human body system
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Answer:

integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, and reproductive

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and this is biology not physics

5 0
3 years ago
A solid cylinder of mass 12.0 kgkg and radius 0.250 mm is free to rotate without friction around its central axis. If you do 75.
dybincka [34]

Answer:

The final angular velocity is 20rad/s

Explanation:

We are given;

mass, m = 12 kg

radius, r = 0.25 m

Work done;W = 75 J

Moment of inertia of cylinder, I = (1/2) mr²

Thus,

I = (1/2) x 12 x 0.25² = 0.375 kg.m²

Now, from work energy theorem,

Work done = Change in kinetic energy

So, W = KE_f - KE_i

Now, Initial Kinetic Energy (KE_i) = 0

Final Kinetic Energy; KE_f = (1/2)Iω²

So, KE_f = (1/2) x 0.375 x ω²

KE_f = 0.1875 ω²

Now, W = 75 J

Thus,

From, W = KE_f - KE_i, we have;

75 = 0.1875 ω² - 0

75 = 0.1875 ω²

ω² = 75/0.1875

ω² = 400

ω = √400

ω = 20 rad/s

5 0
3 years ago
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