Ahorizontal beam of laser light of wavelength 585 nm passes through a narrow slit that has width 0.0620 mm. the intensity of the light is measured on a vertical screen that is 2.00 m from the slit. (a) what is the minimum uncertainty in the vertical component of the momentum of each photon in the beam after the photon has passed through the slit?

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2