Of the following alternative energy sources, which is unlikely to contribute significantly to power generation in the future?
Tidal
Dams
Photovoltaic Solar
Wind

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Astep up transformer has 250 turns on its primary and 500 turns on it secondary. when the primary is connected to a 200 v and the secondary is connected to a floodlight that draws 5a, what is the power output? show all of your work.