Im guessing it's (a) since the numbers go in chronological order and you read the periodic table left to right
5.4 x 1014Hz
wavelength x frequency = the speed of light
Atomic mass = number of protons + number of neutrons = 4+5 = 9 amu
Answer:
194,400 joules of kinetic energy.
Explanation:
Remember that to calculate the Kinetic energy you need to use the next formula:

We know that Mass= 1200 kg and velocity is 18m/s, so we insert those values into the formula:

So the kinetic energy of a car moving at 18m/s with a mass of 1200 kg would be 194,400 joules.