Answer:
the advantages of the periodic table are as follows;
Explanation:
- the periodic table is easy to understand and and elements are positioned according to their configurations.
- the lanthanide series as well as the actinide series are seperately placed
- the elements in the table are placed according to their respective atomic numbers thus reduces the complexity of the periodic table.
Speed = distance / time
= 125 miles / 2 hr
= 62.5 mi/h
Convert 65.5 mi/h to km/h
= 65.5 / 5
= 13.1
=13.1 x 8
= 104.8 km/h
Therefore speed equal 104.8 km/h
Answer:
Increase the amplitude
Explanation:
The energy conveyed by a wave is directly proportional to the square of its amplitude. Thus; E ∝ A²
This means that increasing the amplitude will lead to an increase in the energy.
Now, the amplitude of a wave is the height of a wave from it's highest point known as the peak, to the lowest point on the wave known as the trough whereas wavelength refers to the length of a wave from one peak to the next.
This means that increasing the amplitude has no effect on the wavelength.
<u>We call changes between solid liquid and gaseous forms of a substance as phase change or change of state.</u>
<u>Explanation:</u>
To change a substance from one state to another, extreme temperatures or pressures are required. Sometimes when a substance doesn't change states we should use all the ideas when that happens. To create a solid, we should decrease the temperature by a huge amount and then add pressure. For example, oxygen will solidify at -361.8 degrees Fahrenheit at standard pressure. However, it will freeze at warmer temperatures when the pressure is increased.
Phase changes happen when a substance reach some special points. Sometimes when a liquid becomes a solid a freezing point or melting point is used to measure the temperature at which a liquid changes into a solid. Some of the phase changes are: Condensation, Freezing, Melting.