An electrically neutral atom is an atom which
a. does not have any protons or electrons
b. has more neutrons than the sum of all its protons and electrons
c. has a balance of protons and electrons (the same number of each)
d. has a balance of neutrons and electrons (the same number of each)
e. has a balance of protons, electrons and neutrons (the same number of each)

concave lenses are used here. they spread the light out before it reaches the convex lens in the eye, therefore letting the image focus directly on the retina. hyperopia is known to you probably as farsightedness.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )