Answer:
Photosynthesis is considered an endothermic reaction, because during the process of photosynthesis, energy from the sun or sunlight is being absorbed.
Explanation:
Any chemical reactions that absorb heat energy from the surroundings to form products is termed the endothermic reaction.
Electromagnetic wave travels faster through air than metal.
Option A
<u>Explanation:</u>
There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.
So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.
Answer: 25.3
Explanation:
The question aks to convert 19 quibs, which is the amount of skvarnick that you obtained, to sleps.
Since, you are given the equivalence between sleps and quibs, you can build your own conversion factor, which is how the sciientific calculations are made:
- equivalence: 4 sleps = 3 quibs
- divide both sides by by 3 quibs: (4 sleps / 3 quibs) = (3 quibs / 3 quibs)
- simplify: 4 sleps / 3 quibs = 1 ← conversion factor
Now, you can multiply 19 quibs by the conversion factor:
- 19 quibs × 4 sleps / 3 quibs = 76 / 3 sleps ≈ 25.3 sleps. ← answer
The quibs units cancel out since they are in the numerator and denominator, leaving only sleps.