Which element has 7 valence electrons?

a nitrogen (N)

b neon (Ne)

c lithium (Li)

d chlorine (Ci)

With what speed must m1 rotate in a circle of radius r if m2 is to remain hanging at rest?

How slow is someone walking if they walk 22 meters in 60 seconds

The thermal contact resistance at the interface of two 1-cm thick copper plates is measured to be 0.000056 m2K/W.

An atom gains an additional electron. What is the overall charge of the ion that is formed? elt

What is the difference between contact force and force at a distance

A series of steps that allows someone to conduct an experiment are called a

A coach is hitting pop flies to the outfielders. if the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?

The two major ways to transfer charge between two objects are

When a wire loop is connected to a battery, what is produced in the loop?

A solid sphere of radius R has a total charge Q distributed evenly throughout its volume. What fraction of the total charge is located inside a radius R/2?