Amicroscope includes an objective lens (with focal length of f_o = 1cm) and an eyepiece (with f_e = 3cm). the distance between two lenses is d = 20cm. compute: the angular magnification power of the microscope. where an observation slice (object) should be placed (the distance between the slice surface and the objective lens) in order to make the final image located 25cm left of the eyepiece?

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

What happens to an isotope during radioactive decay?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.