.According to the following isotope what is the number of protons, electrons and neutrons: 37
K
19

*37 protons;37 electrons;18 neutrons
*19 protons;37 electrons, 19 neutrons
*none of the above
*19 protons;19 electrons;18 neutrons

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.