Draw a graph to show the variation with angle of the intensity of light observed on a screen some distance from two very narrow, parallel slits when coherent monochromatic light falls on the slits. b describe how the graph you drew in a changes when: i the number of slits increases but their separation stays the same ii the number of slits stays at two but their separation decreases.

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank