2 questions! most important one is the second one so answer that. only answer if the answer to the 2 question is yes. if you cant say yes to the second question then just dont answer

electromagnetic waves travel through space with vacuums. give me brainliest if right.

show the wavelengths of a wave. show the crests of a wave.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.