-0 m/s
- average velocity=displacement/time
- the runners displacement is zero so her average velocity must be zero
Answer:
I do believe it is A it makes the most since
Answer:
Wavelength = 0.15 nm
Frequency =
Explanation:
We have given photon energy E = 8 KeV = 8000 eV
In question it is given that 
So 
Plank's constant 
We know that photon energy is given by 
So 

Now wavelength 
Answer:
$21,840
Explanation:
35 hours times 52 weeks - 1820 hours
1820 hours times 12 dollars = $21,840 before taxes