Lasers can now be designed to emit pulses of light smaller than 30 microns wide in their direction of motion. (a) estimate the uncertainty in the momentum ofa photon in such a pulse. (b) the momcntum ofa photon is p = ii ia. estimate the uncertainty in the wavelength ofa photon in the pulse, assuming a nominal wavelength of800 nl11.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

12. a body is a particular amount of matter. it can be a solid, liquid or gas. it can be described as existing in a. size and shape. b. motion and force c. time and space. d. location and movement.

Which component is used to measure the current in a circuit? oa. switch ob. resistor oc. ammeter the answer is c. for y’all plato people