Answer:
57.8kg
Explanation:
Potential energy is given by:

Where U is potential energy, m is mass, g is acceleration due to gravity, and h is height. Using this equation:

Answer:
A wave pattern organizes a speech
Answer: Option (d) is the correct answer.
Explanation:
As it is known that like dissolves like. So, water being a polar compound is able to dissolve only polar compounds.
Hence, a compound that is ionic or polar in nature will readily dissolve in water. Whereas non-polar compounds will be insoluble in water.
As
is a non-polar compound. Hence, it is insoluble in water.
On the other hand,
is a polar compound due to difference in electronegativity of chlorine and carbon atom there will be development of partial charges. Hence, there will be dipole-dipole forces existing between them.
Whereas
is an ionic compound and it will readily dissociate into ions when dissolved in water. Also, there will be ion-dipole interactions between sodium and nitrate ions.
Hence,
will readily dissolve in water.
Thus, we can conclude that the compounds correctly arranged in order of increasing solubility in water are
<
<
.
Use your head or a formula website.