The ozone layer acts as an invisible shield and protects us from harmful ultraviolet (UV) radiation from the sun. In particular, the ozone layer protects us from the UV radiation, known as UV-B, which causes sunburn.
Ozone is a colorless, odorless reactive gas comprised of three oxygen atoms.
Answer:
acid; there ph value is mostly 7
base: there ph value can be more than 7 or less than 7
The answer is true the si base unit for mass is the gram
Answer:
4.55 m
Explanation:
Given data
- Frequency (ν): 66.0 MHz = 66.0 × 10⁶ Hz = 66.0 × 10⁶ s⁻¹
- Speed of light (c): 3.00 × 10⁸ m/s
We can determine the wavelength of the radio waves using the following expression.
c = λ × ν
λ = c/ν
λ = (3.00 × 10⁸ m/s)/66.0 × 10⁶ s⁻¹
λ = 4.55 m
The wavelength of the radio waves is 4.55 m.
C. because silvers atomic number is 47 so you subtract 47 from 107 to get the number of neutrons