Maybe there is people who used
If one m³ of that material holds 4,000 kg of it,
then 0.09 m³ holds
(0.09) x (4,000) = 360 kg of it
The force of gravity acting on 360 kg of anything
on the Earth's surface is
(mass) x (gravity)
= (360 kg) x (9.8 m/s²) = 3,528
Beryllium has a mass number of 9 and 4 protons. To find the number of neutrons you need to subtract the number of protons from the mass number. so...
neutrons = mass - # protons
neutrons = 9 - 4 = 5
The wire encased in iron. This is because iron conducts current so the fuse would still work well above the rated current!
