When the engine's <em>operating speed increases</em> the temperature of the engine will also increase.
Given:
Automobile engines without a cooling system.
To find:
The affect on the temperature of the engine as its operating speed increases.
Solution:
The speed of the operating engine increases.
- As we know that kinetic energy of the object and motion of the object is directly proportional<em> </em>to each other.
<em>Velocity </em><em>of object </em><em>∝ Kinetic energy </em><em>of object...[i]</em>
- When the<em> kinetic energy</em> of the object increases the kinetic energy of the particles of the object also increases.
- And <em>kinetic energy</em> of the particles is directly linked to the <em>temperature </em>of the object.
<em>Kinetic energy</em><em> ∝ </em><em>Temperature </em><em>of object</em>...[ii]
From [i] and [ii] :
<em>Velocity </em><em>of object ∝ </em><em>Temperature </em><em>of an object</em>
- When the engine's operating speed increases it will increase the kinetic energy of its particles and with that increase, the increase in the temperature of the engine will be <em>observed</em>.
So, from this, we can conclude when the engine's operating speed increases the temperature of the engine will also increase.
Learn more about kinetic energy and temperature here:
brainly.com/question/2731193?referrer=searchResults
Answer: Option (B) is the correct answer.
Explanation:
Whenever there is less concentration of solute particles in a solvent then it means less number of solute particles are available. As a result, there will occur less number of collisions between the solvent and solute particles.
It means that there will be a decrease in rate of reaction.
But if there is more concentration of solute particles then it shows more number of solute particles are available for reaction. As a result, more number of collisions will take place between the particles of solute and solvent.
Hence, then there will occur an increase in rate of reaction.
Thus, we can conclude that a lower concentration of dissolved particles decrease the reaction rate because when there are less dissolved particles, less collisions take place.
Phosphates and deoxyribose
Answer:
Fossils & common ancestors
Explanation: Fossils provide evidence that evolution has taken place by fossil records. Fossil records provide evidence species have changed over time. Hope this helped! :)