Usually, you have to take two years of physical sciences with lab. It doesn't have to be physics, it can be chemistry or biology.
Answer:
4N
Explanation:
a = (7-3)/5 = 0.8m/s^2
F = ma = (5)(0.8) = 4 Newtons
Ni is Nickel.
He is Helium.
Pb is Lead.
The smallest unit of an element that has all the properties of the element is an atom. This has all the properties of an atom, including the particles.
89 degrees Fahrenheit would be 31.7 degrees Celsius!