Answer:
1
The mass of the Potassium-40 is 
2
The Dose per year in Sieverts is 
Explanation:
From the question we are told that
The isotopes of potassium in the body are Potassium-39, Potassium-40, and Potassium-
41
Their abundance is 93.26%, 0.012% and 6.728%
The mass of potassium contained in human body is
per kg of the body
The mass of the first body is 
Now the mass of potassium in this body is mathematically evaluated as

substituting value


The amount of Potassium-40 present is mathematically evaluated as
0.012% * 0.024


The dose of energy absorbed per year is mathematically represented as

Where E is the energy absorbed which is given as 
Substituting value


The Dose in Sieverts is evaluated as



Because when a candle burns the wax is burning off so as its heated more and more wax is lost and if more wax is lost... Obviously it means that the candles mass will be lower :)
Work is related to potential and Kinetic because your doing something which is working
Answer:
Supongo que quieres encontrar las relaciones que te permiten cambiar las escalas de temperatura.
Las 3 escalas de temperatura son:
°C = grado Celcius.
°F = grado Farenheit.
K = grado Kelvin.
Empezamos con °C, pues es la mas conocida.
La diferencia entre consecutivos grados es la misma en la escala Kelvin que en la escala Celcius, pero la escala Kelvin esta definida de tal forma que el cero Kelvin representa la ausencia absoluta de temperatura, mientras que en Celcius podemos tener temperaturas menores a 0 grados.
La transformación entre Celcius y Kelvin es:
x °C = (x + 273.15) K
Es decir, agarramos nuestra temperatura en °C, y le sumamos 273.15 grados.
La transformación entre Celcius y Farenheit es:
x °C = ((x*9/5) + 32) °F
Y la faltante, va a ser de Kelvin a Farenheit, que es:
x K = ( ( (x - 273.15)*9/5) + 32) °F