A ball at rest falls from a platform above the ground. The ball falls freely and hits the ground 3 s later. What is the height of the platform?
(use -9.8 m/s2 today for the acceleration due to gravity)

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Which feature of a heating curve indicates a change ofn state