The energy required to dislodge electrons from sodium metal via the photoelectric effect is 275 kj/mol . what wavelength of light, in nanometers, has sufficient energy per photon to dislodge an electron from the surface of sodium? express the wavelength in nanometers to three significant figures.

What’s #16 asking me and how do i solve it?

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?

How can waves travel through ground?