Light bulb 1 operates with a filament temperature of 2700 k whereas light bulb 2 has a filament temperature of 2100 k. both filaments have the same emissivity, and both bulbs radiate the same power. find the ratio a1/a2 of the filament areas of the bulbs.

An object's buoyant force and weight mean the same thing.a. trueb. false

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)