Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
You are not logged in.
plz help me in the following guestions
Q 1
If a sample of a radioactive isotope has a half-life of 1 day, how much remains at the end of the second day and at the end of the third day?
Q 2
The most common kind of iron has a mass number of 56. Find the radius, approximate mass and approximate density of the nucleus
Q 3
Is Heisenberg's uncertainty principle applicable to the practical case of using a thermometer to measure the temperature of a glass of water?
Offline
for the 3rd question werner's theory is about the measurement of one qty affecting another qty in a closed system of the two quantities occuring simulteneously.
firstly,temp is the only qty involved.secondly the introduction of a therm.doesnt alter the temp of the water.thirdly,the principle is mainly for subatomic particles
Offline
