Their mass because it can let you know their weight and size
Answer:
D penguins. an stay warm in cold artic waters
Explanation:
lipids carry extra energy and store it
Fill a graduated cylinder to 10mL, place the rock inside and calculate the difference in mL.
For radioactive materials with short half-lives, you use a very sensitive calibrated detector to measure how many counts per second it is producing. Then using the exact same set up you do the same at a latter time. You use the two readings and the time between them to determine the half-life. You don’t have to wait exactly a half-life, you can do the math with any significant time difference. Also, you don’t need to know the absolute radioactivity, as long as the set up is the same you only need to know fraction by which it changed.
For radioactive materials with long half-lives that won’t work. Instead you approach the problem differently. You precisely measure the mass of a very pure sample of the radioactive material. You can use that to calculate the number of atoms in the sample. Then you put the sample in a counter that is calibrated to determine the absolute number of disintegrations happening in a given time. Now you know how many of them are disintegrating every second. You use the following equations:
Decays per Second = (Number of Atoms) x (Decay Constant)
Half-life = (Natural Log of 2) / (Decay Constant)
And you can calculate the half-life
Hope it helps :)
Mark it as brainliest pls :)
Answer:nuclear reactor, solar panel
Explanation:there are several papers about going to moon and making a working habitat system a moon base, but we need power and i am confuse with which is best source for generating power for moon mission.
