Double-slit experiment for electrons. Electrons in a beam are directed towards two slits. The electrons each have a speed of 2000 m/s. The slits spaced 0.6 mm apart. a. What is the De Broglie wavelength of these electrons? b. What is the width of the central maximum if the screen is 0.5 m away from the slits? c. What is the De Broglie wavelength and width of the central maximum on the same screen if the speed of the electrons is reduced by a factor of 1.5? Compare these values to the values previously calculated. g

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Which of the following statement is false