Answer:
II and IV.
Explanation:
To know which option is correct, do the following:
Energy (E) and frequency (f) are related by the following equation:
E = hf
Where:
E is the energy.
h is the Planck's constant.
f is the frequency.
From the equation E = hf
Energy is directly proportional to the frequency. This implies that an increase in the frequency will also increase the energy and a decrease in the frequency will also decrease the energy.
Therefore, (II) in the question above is correct.
Velocity (v), wavelength (λ) and frequency (f) are related by the following equation:
v = λf
Divide both side by λ
f = v/λ
Thus, we can see clearly that the frequency is inversely proportional to the wavelength. This means that an increase in frequency will decrease the wavelength and a decrease in frequency will increase the wavelength.
Therefore, (IV) in question above is correct.
Thus, II and IV are the correct answers.
I'm not completely sure but if I did know I would definitely tell u
Alright my friend so let's put it this way A banana ripening is still a chemical change so we can throw that one out if hydrogen is burning it'll be a chemical zinc is reacting with an acid therefore making it a chemical so the best option will be that liquid water turning into vapor would be a physical change so 4. is your answer
<span>The answer is an equation. The equation should be balanced meaning mass on both sides of the equation, that is, products and reactants should have the same mass. This is a requirement due to the law of conservation of mass.The reactants and products are symbolized using <span>formulas.</span></span>