Brass is an alloy made from copper and zinc. a 0.59 kg brass sample at 90.0 c is dropped into 2.80 kg of water at 5.0 c. if the equilibrium temperature is 6.8c, what is the specific heat capacity of brass?

 Since no heat is lost to the surroundings, the change in thermal energy of the brass piece and the water sample have have the same magnitude: 

m_brass ∙ c_brass ∙ ∆T_brass = m_water ∙ c_water ∙ ∆T_water 

=> 

c_brass = c_water ∙ (m_water/m_brass) ∙ (∆T_water/∆T_brass) 
= 4186J/kg°C ∙ (2.8kg/0.59kg) ∙ ((6.8°C - 5°C) / (98°C - 6.8°C)) 
= 392J/kg 

This is kenetic energy.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.