What is the speed of a wave on a gets train with a mass of 2.5 KG with the length of 0.25M if the force of tension on a string is 20 N

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

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?

The energy equivalent of the rest mass of an electron is