Answer:
2. atoms of an element that have the same number of protons and a different number of neutrons
Explanation:
Isotopes of an element is made up of atoms of an element that have the same number of protons and a different number of neutrons.
The number of protons are the positively charged particles in an atom
The number of neutrons are the uncharged particles.
Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons in their carious nuclei.
Isotopes have have the same electronic configuration and hence will have similar chemical properties. They only differ in their masses.
Answer:
the acceleration of the elevator is increasing
Explanation:
For this exercise we propose the solution using Newton's second law
F -W = m a
F = m (g + a)
If the net force increases, it implies that the acceleration of the elevator is increasing, since the acceleration of gravity is constant as the ascent is accelerating.
Answer:
a.)How far from the building does the ball hit the ground?
72 m
b.)How long does it take to hit the ground?
6 s
c.)What is its speed when it hits the ground?
63.48 m/s
Explanation:
When an object is in free fall with no air resistance present or wind acting on it it only is under the influence of gravity. Gravity acts straight down and accelerates the object all the way to the ground. If there is air resistance or a wind force on the object it will have an acceleration that isn't 9.8 m/s^2
Is this a true and false question?
