As the moon revolves around the earth, it also rotates on its axis. why is it that the the same side of the moon is always visible from earth?
a. the moon does not have a day and night cycle.
b. that side of the moon only faces away from earth during the daytime.
c. the speed of the moon's rotation keeps the same side always facing earth.
d. the earth's gravity attracts one side of the moon more than the other.

How are calculation for velocity and speed different

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?