I believe the term Frequency is what you are looking for.
45mph is the answer if you do the math right
The properti that you didnt share
Answer:
all forms of electromagnetic radiation travel at a single speed in a vacuum.
Explanation:
Answer:
Mass of the oil drop, 
Explanation:
Potential difference between the plates, V = 400 V
Separation between plates, d = 1.3 cm = 0.013 m
If the charge carried by the oil drop is that of six electrons, we need to find the mass of the oil drop. It can be calculated by equation electric force and the gravitational force as :


, e is the charge on electron
E is the electric field, 


So, the mass of the oil drop is
. Hence, this is the required solution.