Accuracy is the answer. Hope this helps. :)
Answer:
-4200J
Explanation:
Since q = mc∆T
where:
m = mass of the substance
c = specific heat capacity of the substance
∆T = change in temperature in Kelvin
but;
the specific heat capacity of water = 4.2J/K/g
Therefore q = 50*4.2*(253-273)
q = -4200J
Note: the negative is only used to indicate heat loss
Hope this helps
43.62m
Explanation:
Given parameters:
Energy = 8550J
Mass of bell = 20kg
Unknown:
Height of the bell = ?
Solution:
As this state, the bell possesses potential energy. Potential energy is the energy at rest in a body. It is due to the position of the body.
Potential energy = m g h
m is the mass of the body
g is the acceleration due to gravity of the body
h is the height of the body
The unknown is h and we should solve for it.
g = 9.8m/s²
Input the variables;
8550 = 20 x 9.8 x h
h = 43.62m
learn more:
Potential energy brainly.com/question/10770261
#learnwithBrainly
Answer:
To find the number of neutrons, subtract the number of protons from the mass number. number of neutrons
Explanation: