How can heat be transferred?

a. convection, ultraviolet rays and conduction

b. convection, gamma rays and conduction

c. convection, visible light and conduction

d. convection, radiation, and conduction

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

What structural formula represents 4 electrons shared between two atoms?