Wein's law states that:
Peak wavelength (m)*Temperature (K) = 2.898*10^-3 m.K
In this case, Peak spectrum = 250 nm = 250*10^-9 m
Temperature (K) = (2.898*10^-3)/(250*10^-9) = 11592 K
In °C, Temperature = 11592-273.15 = 11,318.85 °C
TO CHECK THE VALIDITY OF
F = mg + v
https://brainly.in/question/12541980?utm_source=android&utm_medium=share&utm_campaign=question
this might help you
Explanation:
Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery.
Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.
Density of powder 1 = 0.5 g / 45 cm^3 = 1/90 g/cm^3
Density of powder 2 = 1.3 g / 65 cm^3 = 1/50 g/cm^3
Therefore the densities of the two powders are different, hence chemical reaction has occurred.
(note: none of the other choices make sense. In fact, a different density does not necessarily indicate a chemical change, see paragraph below).
Density of powders are not definitive unless they are each of the same size and texture. For example, granular sugar, rock sugar, and icing sugar all have different densities. I would conclude that this experiment does not lend to a reliable answer.
