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belka [17]
3 years ago
11

5. What do you think? At a baseball game, when you are far from the batter, you might see the batter hit the ball before you hea

r the sound of the hit. Why do you think this
happens?
Physics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

The speed of sound in air is lower compared to in solids and liquids.

Explanation:

Sound is a wave that can be generated by a vibrating body. Its speed through different media differs due to the nature of the media.

Since the molecules of solids are closely packed, sound can be easily transferred from one molecule to another at a faster rate. Thus, the high speed of sound in solids.

In liquids, the molecules are not as closely packed as solids. So that  the speed of sound though liquids is lower compared to that of solids. Gases has its molecules farther apart, thus making the speed of sound through it the lowest compared to solids and liquids.

Therefore the sound of the batter hitting the ball is heard latter, due to its lower speed through the air.

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Researchers have found that the larvae of all North American firefly species glow as a warning sign to ward off predators. Howev
Marrrta [24]

Explanation:

The theory of speciation confirms what happens with fireflies, only fireflies that are part of the same species can reproduce among themselves, which means that fireflies that use pheromones as mating signals will attract fireflies that use that same form or mechanism of reproduction.

Some mechanisms that allow this type of differentiation or speciation to occur are: seasonal or geographic isolation and sexual isolation due to behavior or conduct.

Speciation allows the formation of new populations of organisms that share the same physiological and genetic characteristics. Therefore, the adult fireflies that shine as a mating signal are possibly found in the same geographical position and their physiological and genetic characteristics are compatible with those of his own species.

7 0
3 years ago
_________ is a process in which water moves through a membrane
Nookie1986 [14]

Answer:

osmosis

Explanation:

osmosis is the movement of solvent materials through a semi permeable membrane into a region of solute concentration, therefore water moving through a membrane is an osmotic process.

6 0
3 years ago
Sir wants to see if a new shower cleaner works better in removing soap dirt than his old cleaner.  He uses the new cleaner on on
sergeinik [125]
The independent variable in this problem would be the different types of shower cleaner. The dependent variable would be the shower tiles.
8 0
3 years ago
Jasper and Gemma are going to play on a teeter totter. Gemma gets on first. When Jasper gets on, Gemma moves into the air, but s
Nezavi [6.7K]

Answer:

it will most likely be a: the forces are balanced because jasper weighs the same as gemma.

Explanation:

7 0
3 years ago
Read 2 more answers
If the bond enthalpy for a C-H bond is 413 kJ, what will happen when the C-H bond is broken?
pentagon [3]

Explanation:

Bond Enthalpy : It is defined as amount of energy required to break a the particular bond in there gaseous state. It is also known as bond energy. It units are kJ/mol.

  • Breaking of a bond is an Endothermic process (energy absorbed from the surroundings).
  • Formation of bond is an Exothermic process (energy is released to the surroundings).

If the average bond enthalpy for a C-H bond is 413 kJ/mol, When the C-H bond breaks in which energy will be required ,which will be an endothermic reaction.

8 0
3 years ago
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