Now compare the mean thermal energy (derived in b) with the mean coulomb energy. in the center of the sun, t is about 15 million k and density is about 100 gm/cm. assume that the sun is entirely made up of hydrogen. remember that the coulomb potential energy is e -2 where r is the mean distance between particles (which can be calculated using the density) and q is the charge on the particle. note that the coulomb constant is in cgs units. c. 142

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d