Answer:
agricultural production of food
Explanation:
n=75 kg
v=3m/s
m=n×v
m=75x3
m= 225n
if it is heat flow through a metal, it would be necessary to have a conductor so that the electrons can flow through it (delocalised electrons).
In terms of radiation, it would require a good absorber of heat (e.g. a black surface) so that the thermal energy flows through on the surface area.
V= Current × Resistance
V= 400mA × 5kohms
V= 2000V