If two objects are the same size but one object is 3 times hotter than the other object, the hotter object emits If two objects are the same size but one object is 3 times hotter than the other object, the hotter object emits 3 times more energy per time per area. 9 times more energy per time per area. 12 times more energy per time per area 81 times more energy per time per area. none of the above

Physics make-up packetname_cle14. an observer hears a sound with a frequency of 400 hz. if the speed of sound is 340 m/s,what is the wavelength of the sound? a. 0.85 mb. 1.2 mc. 2.75 m13.6 m15. as sound travels from steel into air, its speed decreases. if the frequency of the wavedoesn't change, what happens to its wavelength? a. it increases(b) it decreasesc. it remains the samed. there is not enough information given

Why should seat belts not be mandatory quick plz

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?