1. Marie put a 4 centimeter (cm) square block of foam in a bucket of water and it floated. Why did it float?
A. The foam is less dense than the water.
B. The foam has air bubbles which make it float.
C. The foam is smaller than the bucket of water.
D. The foam weighs less than all the water in the bucket.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

my dad did alot of meth and ace cheeks

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

c) should be the answer.