A plane is flying 700 km/hr to the east into a head wind that is moving at 20 km/hr west. Calculate the planes velocity.
O 720 km/hr
680 km/hr
0-680 km/hr
0 -720 km/hr

the force on the thing and the distance the force moves the thing

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

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