In a game of football outdoors on a cold day, a player will begin to feel exhausted after using approximately 8.0 × 105 j of internal energy. (a) one player, dressed too lightly for the weather, has to leave the game after losing 6.8 × 105 j of heat. how much work has he done? (b) another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.4 × 105 j of work. what is the magnitude of the heat that he has lost?

Part a)

Part b)

Explanation:

It given that player will feel exhausted when he is using his internal energy of

PART a)

it is given that heat loss by the player is given as

now by first law of thermodynamics we have

now we have

PART b)

It is given that another player did the work as

now we have first law of thermodynamics

now we have

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.