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evablogger [386]
2 years ago
6

What is 6.9 × 107 written in standard form?

Physics
2 answers:
aalyn [17]2 years ago
8 0

Answer:

DDDDDD

Explanation:

n200080 [17]2 years ago
7 0
Answer: 6.9x 107 in standard form is 69,000,000

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NNADVOKAT [17]

Explanation:

Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage.

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2 years ago
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The potential energy of a watermelon is 15.0 J. The watermelon is 3.0 m high. What is the mass of the watermelon?
maks197457 [2]

Answer:

m = 0.51[kg]

Explanation:

Potential energy is defined as the product of mass by gravity by height.

E_{pot}=m*g*h

where:

Epot = potential energy = 15 [J]

m = mass [kg]

g = gravity acceleration = 9.8 [m/s²]

h = elevation = 3 [m]

Now replacing:

E_{pot}=m*g*h\\15=m*9.8*3\\m = 0.51[kg]

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3 years ago
What can we say about Gamma waves on<br> the electromagnetic spectrum?
sladkih [1.3K]

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Explanation: :)

6 0
2 years ago
Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?
MariettaO [177]
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7 0
3 years ago
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How many times louder is the intensity of sound at a rock concert in comparison with that of a whisper, if the two intensity lev
Phoenix [80]

Answer:

 5 × 10¹⁰ or 5 billion times louder is the intensity of sound at a rock concert in comparison with that of a whisper

Explanation:

Given that at a rock concert;

the intensity of sound is 110 dB compared to a whisper of 3 dB

Now; how many times louder will that of the whisper be compared to the sound of the rock concert

Using the formula for calculating decibels (dB);

For 110 dB

dB = 10log₁₀(W)

110 dB =  10^{(110/10)}

110 dB = 10¹¹

For 3dB

dB = 10log₁₀(W)

3 dB = 10^{(3/10)}

3 dB = 2

Now:

(110/3)dB = 10¹¹/2

(110/3)dB =  5 × 10¹⁰ or 5 billion times louder is the intensity of sound at a rock concert in comparison with that of a whisper

7 0
2 years ago
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