1 point If two systems at different temperatures have contact with each
other, heat will flow from the system at
A 20°C to a system at 303 K
B 30°C to a system at 313 K
C 40°C to a system at 293 K
0 50°C to a system at 333K

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Idon't hope someone you

Visible light is located in the middle of the spectrum.

I'm pretty sure its c