Answer:
D. The telescope detects high-energy electromagnetic waves.
Explanation:
First of all, let's define what X-rays are.
X-rays are electromagnetic waves at high frequency and short wavelength.
The wavelength of X-rays span between 0.01 and 10 nanometers. X-rays are the second-highest frequency electromagnetic waves, after gamma rays, which have higher frequency.
The energy of an electromagnetic wave is directly proportional to its frequency, according to the equation:
where:
h is the Planck constant
f is the frequency of the wave
Since X-rays are high-frequency electromagnetic waves, it means that they also are high-energy electromagnetic waves.
Therefore, the correct answer is
D. The telescope detects high-energy electromagnetic waves.
He was brought to be believe that the earth was geocentric, meaning the earth was centered and everything orbited around it but he then published his work saying that is was heliocentric. So in the end believed in heliocentric. Let me know if this helped.
Water molecules are made of hydrogen atoms and one oxygen atom.
Hope this helped!
<u>Answer 45 :</u> This statement is true.
Explanation :
We are taking an example of carbon (C) with atomic number 6 and atomic mass 12.
As we know that the number of protons and number of electrons are equal to the atomic number.
The atomic number of carbon is 6. So, the number of protons and the number of electrons is equal to 6.
And, the number of neutrons = Atomic mass - Atomic number = 12 - 6 = 6
Hence, this statement is true.
<u>Answer 46 :</u> This statement is true.
Explanation :
We are taking an example of oxygen (O) with atomic number 8.
The electronic configuration of oxygen (O) will be,
Now we have to calculate the number of electrons from the electronic configuration.
The number of electrons = 2 + 2 + 4 = 8
Hence, this statement is true.
Take the molar mass of U and add it to the molar mass of F(3).