Considere n

partículas con carga positivas iguales cada unade ellas con magnitud

Q

/

n

y colocadas de manera simétricaalrededor de un círculo de radio

R

. a) Calcule la magnituddel campo eléctrico en un punto a una distancia

x

del centro del círculo y sobre la línea que pasa a través del centro y que es perpendicular al plano del círculo. b) Explique por qué este resultado es idéntico al cálculo del ejemplo

Why don't you see your reflection in water with waves or repples

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s