Answer:
Explanation:
Hello,
In this case, since we compute the required energy via:
Whereas m is the mass which here is 70 g, C the specific heat which for water is 4.184 J/(g°C) and ΔT is the temperature difference which is:
Therefore, the energy turns out:
Best regards.
Here is a very important formula. You should memorize it:
Distance = (speed) x (time) .
Here's how it's used to answer your question:
Distance = (2 m/s) x (600 seconds)
= 1200 meters .
Answer:
Explanation:
When the cold milk is added into the hot coffee, heat is transferred from the coffee (higher temperature) to the milk (lower temperature), until the two substances are at the same temperature (thermal equilibrium).
Therefore, the heat given off by the coffee is equal to the heat absorbed by the milk; so, we can write:
where:
is the mass of coffee
is the specific heat capacity of coffee
is the initial temperature of the coffee
is the mass of milk
is the specific heat capacity of milk
is the initial temperature of milk
is the temperature at equilibrium
Solving for , we find the final temperature of the coffee at equilibrium:
Answer:
The acceleration of a rock thrown straight upward on the way up, at the top of its flight and on the way down is called gravity, and it's denoted by the letter g.
Gravity change vary depending on the position on Earth or the planet that you are studying
Usually on earth we use
Explanation:
<u>If we analyze </u><u>Newton's second law</u>
<u>Then we have the force that is caused by the </u><u>weight</u><u> of the rock</u>
So, we have that