Which equation shows the relationship of wave speed to wavelength and wave frequency?
a Speed = Wavelength x Frequency
b Speed = Wavelength/Frequency
C Speed = Frequency/Wavelength
d None of the above

Answer is A

Speed = Wavelength × Frequency

Explanation:

Googled it

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j