A una temperatura de 22°C una Varilla de hierro tiene una longitud de 7m. Calcula cuál será
su longitud al aumentar la temperatura a 32°C.
Dato: cx fe = 11.7x 10-6° 0-1

a person with a mass of 106kg has a weight of 1060n

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