electricity generator

Im interested in solar energy the most. Im interested the most in solar energy because its clean and can literally last till the end of mankind. pros / clean and lasts forever. cons / not on demand

standing waves

that day we drew a wave and found the frequency. after this we figured out the speed of a wave is always the same no matter how much force is given. you can find the speed by multiplying the wavelength and frequency together. today i learned that the speed of a wave is always the same

simple harmonic motion

one simple harmonic motion i saw was a swing set moving back and forth.
another one i saw was your pendulum or newtons toy whatever going back and forth
a third one i found was a light bulb hanging in a basement