i hate this question.
Conservation of momentum - is when the total momentum before and after collision is equal.
Here is the formula darling,
p = p
mv = mv
See the pic for example. HmpH
Look carefully at the diagrams of each wave.
2 answers:
Answer : Wave B.
Explanation :
Given that, the waves A, B, C, and D each represent a different wave of the electromagnetic spectrum.
The energy of a wave is given by :
Where,
h is the Planck constant
c is the speed of the light
is the wavelength of light.
The wavelength of a wave is defined as the distance between two consecutive crests or troughs.
The energy of the wave is inversely proportional to its wavelength.
So, the wave that is energetic enough to damage living human cells is wave B because its wavelength is small as compared to other waves.
<em>Hence, the correct option is (B) " Wave B because it has the shortest wavelength, and therefore carries the most energy ". </em>
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Answer: B. CO
Explanation:
Diatomic molecules are those that are formed by two atoms of the same chemical element (homonuclear diatomic molecule) or different chemical element (heteronuclear diatomic molecule).
In this sense, oxygen is a homonuclear diatomic molecule because it is formed by two atoms of the same element () and Carbon monoxide (
) is heteronuclear diatomic molecule.
Sodium Chloride is not a diatomic molecule because is a product of ionization, but it can be diatomic in its gas phase with a polar covalent bond.