Answer:
20
27
Explanation:
Given parameters:
Atomic mass = 47
Atomic number = 20
Unknown:
Number of protons = ?
Number of neutrons = ?
Solution:
To solve this problem,
Atomic mass = number of protons + number of neutrons
Atomic number = number of protons
So;
Number of protons = 20
Now;
Number of neutrons = Atomic mass - number of protons
Number of neutrons = 47 - 20 = 27
Answer: 200 joules I think.
Explanation:
Force=7N-5N
=2N
It is because of difference between direction
Answer:
Sand,Mud
Explanation:
Sugar and salt are examples of soluble substances. Substances that do not dissolve in water are called insoluble. Sand and flour are examples of insoluble substances.
<span>The force required to make an object travel along a circular path is:
Centripetal Force.</span>
