Port-wine birthmarks can be removed by expose to 585 nm laser light. pulses are strongly absorbed by oxyhemoglobin in the capillaries in the birthmark, destroying them. a typical laser pulse lasts for 1.5 ms, and contains an energy of 7.0 j a. find the frequency and energy of each laser photon. b. how many photons are in each pulse in the given duration (1.5 ms)? explain if the numeric scale makes sense to you.

When you turn on a battery-operated device, an electrical circuit is

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.