In a running event, a sprinter does $3\mathrm{.}2105$ J of work and her internal energy decreases by $9\mathrm{.}4105$ J$.$

$($a$)$ Determine the heat transferred between her body and surroundings during this event. $($Give the heat transferred to her body from the surroundings.$)$

J

$($b$)$ What does the sign of your answer to part $($a$)$ indicate?

There is no heat transferred between the sprinter and the environment.Energy is transferred from the sprinter to the environment by heat.$$Energy is transferred from the environment to the sprinter by heat.