what are three main advantages of studying objects at different wavelengths of radiation?
part 2 is the green house effect operating in earth's atmosphere or harmful? give examples. what are the consequences of an enhanced greenhouse effect?

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?