To find food. echolocation is when a sound bounces off of something and they can tell what direction it came from.
Answer:
5.3 x 10⁻⁷ m
Explanation:
Data Given
frequency = 5.7 x 10¹⁴ Hz.
Convert Hz to per seconds (s⁻¹)
1 Hz = 1 s⁻¹
5.7 x 10¹⁴ Hz = 1 x 5.7 x 10¹⁴ = 5.7 x 10¹⁴ s⁻¹
wavelength =?
Solution:
Formula used to calculate wavelength
f = c/λ
rearrange the above equation
λ = c/f ........(1)
Where:
c = speed of light = 3 x 10⁸ ms⁻¹
λ= wavelength
put the values in above equation 1
λ = 3 x 10⁸ ms⁻¹ / 5.7 x 10¹⁴ s⁻¹
λ = 5.3 x 10⁻⁷ m
So the wavelength of light = 5.3 x 10⁻⁷ m
Answer:
A = shielding.
Explanation:
The addition of electron causes the atomic size increase from top to bottom due to increase in atomic number.
As the atomic number increased one more electron is added and because of this electron on more electronic shell is added. Thus the electron become more away from the nucleus as many of other electrons are present in the way from nucleus to the outer electrons.
The hold of nucleus becomes weaker. Although nuclear charge is also increased but at the same time other electrons shield the respective electrons. So effective nuclear charge is weaker than the actual nuclear charge.
Because of this shielding it is easy to remove the electrons or we can say ionization energy decreases.
Leather is not a magnetic substance. Magnetic substances are materials which can be attracted by a magnet. Leather cannot be attracted by a magnet. Hope I helped. Good luck
Answer:
A.) Longer and Shorter
Explanation:
If the wavelength of a light wave is shorter that means the frequency will be higher.
That means that longer wavelengths have a lower frequency.