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Mumz [18]
3 years ago
11

Light travels at the rate of 300,000 kilometers per second in a vacuum." Which of these statements is correct about this law? It

is a fact in nature which cannot be tested. It is a theory which is not supported by data. It is an observation which cannot be explained. It is a description which does not work under similar conditions
Physics
1 answer:
Zarrin [17]3 years ago
4 0

Answer: It is an observation which cannot be explained.

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Why can't humans breathe in space?​
11111nata11111 [884]

Answer:

There is no atmspheric pressure

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2 years ago
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If you have 10.0 g of a substance that decays with a half-life of 14 days, then how much will you have after 42 days?
Nat2105 [25]
The formula for the mass that remains:
m=m_0 \times (\frac{1}{2})^\frac{t}{T}
m₀ - the initial mass, t - time, T - the half-life

m_0=10 \ g \\
T=14 \ d \\
t=42 \ d \\ \\
m=10 \times (\frac{1}{2})^\frac{42}{14}=10 \times (\frac{1}{2})^3=10 \times \frac{1}{8}=10 \times 0.125=1.25

The answer is c. 1.25 g.
6 0
2 years ago
You weigh 580 N on Earth. If you were to go to Mars, where its gravitational pull is 3 . 7 11 m /s 2 , what would you weigh? (Hi
andrew-mc [135]

Answer:

59.18 kg

Explanation:

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2 years ago
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What are three types of electromagnetic waves that are used to transmit information? What types of devices are used to receive e
MrMuchimi

Answer:

Three types of electromagnetic waves, used to transmit various information

Explanation:

A form of energy waves having both electric & magnetic fields are Electromagnetic waves. Three types -

Radio Waves - These have longest wavelengths & transmit data through radio, satellites, radar .

Micro Waves - These have shorter wavelengths & are used in cooking appliances & predicting weather.

X rays - These have more short wavelength and can penerate soft tissues like skin & muscle, hence are used for medical examining

3 0
2 years ago
★CHECK MY ANSWER PLEASE★
Sergeu [11.5K]
You are correct!
Happy to assist you!
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