Both have positive charge. In fact, an alpha particle IS a nucleus of a Helium atom.
Answer: The center of gravity is 1.1338 m away from the left side of the barbell
Explanation:
Length of the barbell = 1.90 m
The distance center of gravity from left = x
Mass on the left side = 25 kg
The distance center of gravity from right = 1.90 - x
Mass on the right side = 37 kg
At the balance point: 


The center of gravity is 1.1338 m away from the left side of the barbell
Answer:inverted, real, and same size
Explanation:
Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Answer:
it decreases by a factor of 16
Explanation:
The intensity of a sound wave is inversely proportional to the square of the distance:

where d is the distance.
Let's call d the initial distance. In this problem, the distance is then quadrupled, so the new distance is d' = 4 d. Substituting in the formula, we see that the new intensity is:

So, we see that the intensity has decreased by a factor 16.