Answer:
3.5 K
Explanation:
When a sample of a substance releases heat energy, its temperature decreases according to the equation:
![Q=mC(T_f-T_i)](https://tex.z-dn.net/?f=Q%3DmC%28T_f-T_i%29)
where
Q is the heat energy released
m is the mass of the substance
C is the specific heat capacity
is the initial temperature
is the final temperature
For the block of brass in this problem, we have:
m = 0.1 kg is the mass
Q = -56.4 J is the heat energy released (negative since it is released)
C = 380 J/kg K is the specific heat capacity of brass
is the initial temperature
Solving for
, we find the final temperature:
![T_f=T_i + \frac{Q}{mC}=5+\frac{-56.4}{(0.1)(380)}=3.5 K](https://tex.z-dn.net/?f=T_f%3DT_i%20%2B%20%5Cfrac%7BQ%7D%7BmC%7D%3D5%2B%5Cfrac%7B-56.4%7D%7B%280.1%29%28380%29%7D%3D3.5%20K)
Answer: 0.064 N
Explanation:
According to <u>Coulomb's Law: </u>
Where:
is the electrostatic force
is the Coulomb's constant
and
are the electric charges
is the separation distance between the charges
For the first case we have
and
. So, we will isolate
first:
Now, for the second case, we will have the same value for
, but
this time and we have to find
:
As we can see this value is less than
because the distance between charges was increased.
So, to summarize, random sampling refers to how you select individuals from the population to participate in your study. Random assignment refers to how you place those participants into groups (such as experimental vs. control)
Answer:
Well it depends are you going back to doing something that is bad for you, Then you need to try your hardest to not going back to doing it.
Explanation:
Answer:
Explanation:
200 x 4 = 800 - 200 = 600300 x 4 = 1200 - 800 - (800 - 300) = 100325 x 4 = 1300 - 800 - (800 - 325) = -25320 x 4 = 1280 - 800 - (800 - 320) = 480 - 480 = 0
Therefore, they met 480 meters from the house.