Answer:
atomic number
Explanation:
the number of protons in the nucleus is called atomic number, it also equals the number of electrons
Answer:
The crown is not pure gold.
Explanation:
First convert pounds to grams.
1 lb = 453.592 g
5 lb = 2267.96 g
When the chemist placed the crown in water and measured the difference in volume, he was doing water displacement. He was measuring the volume of the crown. According to his measurements, the crown is 170 mL.
1170 - 1000 = 170
Now that you have the crown's volume, you can use the density of gold to determine the weight. If the crown is made of pure gold, the calculations will prove that the crown is indeed 5 pounds. If the calculations show a value that is greater than 5 pounds, the crown is not pure gold.
170 mL × 19.3 g/mL = 3281 g
3281 g > 2267.96 g
The crown is not made from pure gold.
It is not practical to use in scientific experimentation to test the effect of an octave on the quality of a song. There are so many scientific experimentations to test the effect that can be count practical like the color on brain waves and function, adrenaline on the response time of carnivores, nutrients on the gender of offspring and much more. Scientific Experimentation has an organized process and detailed series of steps to reject or validate a hypothesis. It is also a third step in scientific method. Researcher use experimentation to test a new hypothesis or theories to approve or support and disapprove them.
Answer:
- <u><em>B. longer wavelength and equal speed </em></u>
Explanation:
One important feature fo <em>electromagnetic radiation</em> is that all have the same speed in vacuum, <em>c</em><em>,</em> in vacuum, which is the speed of light.
Since, the speed, wavelength and frequency of the waves are related you can infere any of them when the other two are known.
The equation is:
- speed = frequency × wavelength
- c = ν × λ . . . for the specific case of electromagnetic radiation
That inverse relation between frequency and wavelength, where the speed is the constant, shows that the lower the frequency the longer the wavelength.
In conclusion, the correct statment is that an <em>an electromagnetic wave that has a lower frequency will also have a longer wavelength and equal speed (option B).</em>
Answer:
where is the chosices to choose from
Explanation:
