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tresset_1 [31]
3 years ago
13

If a microwave oven produces electromagnetic waves with a frequency of 2.70 ghz, what is their wavelength?

Physics
1 answer:
MatroZZZ [7]3 years ago
5 0
Ok this one is pretty straight forward :) This is what we know:

1. 2.7GHz is how many vibrations in 1 second. (2.7 x10^9 Hz)
2. Light always has a constant speed 2.9 x10^8 meters per second.

Therefore to find out the length of one of those vibrations you just divide        2.9 x10^8 by 2.7 x10^9
which looks like this in your calculator:
290000000 / 2700000000
= 0.107m
= 10cm
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Transverse waves is the answer.
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Usually the hull of a ship contains a large volume of air. Why?
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You are working in a biology lab and learning to use a new ultracentrifuge for blood tests. The specifications for the centrifug
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Answer:

Yes, correct

Explanation:

velocity, v = 470 m/s

radius, r = 0.15 m

The radial acceleration is the centripetal acceleration which always acts towards the centre of the circular centrifuge.

The formula for the centripetal acceleration is given by

a =\frac{v^{2}}{r}

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According to the question, we can get the acceleration as mentioned. So the claim is correct.

7 0
2 years ago
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4 0
3 years ago
Lightbulb A is marked "25 W 120V, "and lightbulb B is marked "100 W 120V " These labels mean that each lightbulb has its respect
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The cost of running the lightbulb A for 30 days at 0.110 per KWh is 1.98

<h3>How to determine the energy </h3>

We'll beging by calculating the energy used by lightbulb A. This can be obtained as follow:

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E = Pt

E = 0.025 × 720

E = 18 KWh

<h3>How to determine the cost for running the bulb for 30 days</h3>

The cost of running the bulb for 30 days can be obtained as follow:

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Cost = energy × Cost per KWh

Cost = 18 × 0.11

Cost = 1.98

Lean more about buying electrical energy:

brainly.com/question/16963941

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