Answer:
The samples specific heat is 14.8 J/kg.K
Explanation:
Given that,
Weight = 28.4 N
Suppose, heat energy 
Temperature = 18°C
We need to calculate the samples specific heat
Using formula of specific heat


Where, m = mass
c = specific heat
= temperature
Q = heat
Put the value into the formula


Hence, The samples specific heat is 14.8 J/kg.K
All of the following would be questions that could be scientifically investigated except A.
That is an opinion and cannot become a fact.
Answer:
Following are the answer to this question:
Explanation:
Formula:

Calculating point A:
when the value is 




Calculating point B:
when the value is 



Calculating point C:
when the value is 




Calculating point D:
when the value is 




Calculating point E:
when the value is 




Any charge moving at a constant speed produces <span>(3) both a magnetic and an electric field</span>
Explanation:
A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.