Isotopes have variable numbers of electrons.
true or false
plz

The given statement is false:

Explanation:

Isotopes are those chemical species of same element which contains same number of protons and electrons. But  differ in number of neutrons.

Statement given is false because number of electrons in isotopes of same element remains the same. The difference in the isotopes is due to number of  neutrons present in their respective nuclei.

Hence, given statement is false.

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be