The substances for moving things is that they are in motion which is Kinetic Energy
The formula unit of compound made up from Pb4+ and oxygen is PbO2.
B). 2 Hours
Explanation if the older brother can run 6 MPH and it’s takes him a hour and twenty minutes you automatically can say it’s at least 6 miles then you have to see how many he can run in 20 minutes which is roughly 2 miles so that would mean he run for 8 miles if the younger brother can run 4 MPH then you just have to add that by 2 too see how long it will take to run 8
Nuclear fission is the process of which a large nucleus splits into two smaller nuclei with the release of energy and neutron. In simpler words, nuclear fission is the process in which a nucleus is split into two smaller fragments or pieces (nuclei) and so energy and neutrons are released. The resulting pieces of this fission process have less combined mass than the original piece (nucleus) and the missing was is converted into nuclear energy.
Synthetic drugs have become popular due to the fact that people believe it'll give you a "safe" high. In addition, they’re easy to get a hold of and they're technically legal. These drugs are manmade, and as a result the potency of the drug is in the hands of the manufacturer, which makes every dose different. These drugs could be laced with other drugs like fentanyl. Even a small amount of fentanyl could cause an overdose because that's how powerful it is. Drug tests don't pick up on synthetic drug which is another reason why they're popular among teenagers, since many teens look for a way to get high without getting caught. You can't tell if someone has taken anything and there's no familiar odour with synthetic drugs - some are odourless. The use of synthetic drugs can have many side effects that include: anxiety, aggressive behaviour, paranoia, seizures, loss of consciousness, nausea, vomiting, and even coma or death.