Answer:
Raising its temperature by ![1^{\circ}C](https://tex.z-dn.net/?f=1%5E%7B%5Ccirc%7DC)
Explanation:
The specific heat capacity of a substance is defined as the amount of energy needed to raise the temperature of 1 kg of a substance by
.
The specific heat capacity of a substance essentially tells us how much energy is needed to heat the substance: the larger it is, the more energy is needed. The amount of energy needed to increase the temperature of a substance is given by
![Q=mC_s \DeltaT](https://tex.z-dn.net/?f=Q%3DmC_s%20%5CDeltaT)
where
m is the mass of the substance
Cs is the specific heat capacity
is the temperature variation of the substance
When particles in a substance slow down, we can infer that the object is getting colder. Why we can infer this:
1. Kinetic energy, is energy due to motion, therefore if there is no motion, there is no kinetic energy.
2. The colder an object get, the closer it becomes to having it's particles stopping completely, eventually at the absolute zero.
3. As kinetic energy increases, particles move faster. Kinetic energy usually increases when an object gets warmer. As kinetic energy decreases, particles move slower. Kinetic energy usually decreases when an object gets colder.
So, with this information, we now how and why the kinetic energy slows down.
Answer:
5.66 m/s
Explanation:
p=mv
255 = 45v
v = 255/45
v = 5.66 m/s
If you want to verify your answer, just insert your value to the equation.
Considering that Work, W, is:
W=F·d
You have: 224=F·32
So that F=7 N