Okay so this is a "law of conservation of energy" type of question. it's simple but i was absent for a week and im completely lost so i need an explanation.

we rolled a golfball down a ramp (once at 0.3 m and 0.45 m).
the initial potential energy was 0.135 joules (at 0.3 m) and the other initial potential energy was 0.203 joules (0.45 m)

if u need the median times:
0.45 m = 0.91 s
0.3 m = 1.42 s
so my question is.. does the experiment demonstrate law of conservation? why or why not and finally if it does.. how? ?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

Which type of basaltic lava flow has a fairly smooth