Which option is an example of chemical energy being transformed into thermal energy? A. a furnace burning coal

B. lightning striking a signal tower

C. a woman rubbing her hands together for warmth

D. a plant storing energy from the sun in its leaves.

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.