The photoelectric effect occurs when light shines on a metal. ... Light of any frequency will cause electrons to be emitted.
Answer:
Oxygen.
Explanation:
The copper must be combined with something in the air.
B. It has a negative charge and much less mass than a proton.
Answer:
<h3>The answer is 3000 N</h3>
Explanation:
The amount of force can be found by using the formula

w is the workdone
d is the distance
From the question we have

We have the final answer as
<h3>3000 N</h3>
Hope this helps you