Agamma-ray photon changes into a proton-antiproton pair. ignoring momentum conservation, what must have been thewavelength of the photon (a) if the pair is stationary after creation, and (b) if each moves off at 0.6c. perpendicular to themotion of the photon? (c) assume that these interactions occur as the photon encounters a lead plate and that a leadnucleus participates in momentum conservation. in each case, what fraction of the photon’s energy must be absorbed bya lead nucleus?

Ways that industry and agriculture use physical properties to separate substances

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light