I NEED HELP ASAP IM TIMED! Which of these references a velocity (not speed)? (Select all that apply.) 50 mph south
5 mph east
5 mph
50 mph

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

What type of energy conversion occurs when you place your feet near the fire place and they become warm