Step 1: \ \
\Georgie was pulling her brother with a constnat force is
.
The sled moves distance is
. \ \
The component of force that is in the direction of the sleds movement is
. \ \
The work done is
. \ \
Substitute
and
. \ \

. \ \
The work done by Georgie is
.
Step 2: \ \
\The power of the light bulb is
.
From Part 1: The work done by Georgie is
.
The power is
. \ \
The time
.
Substitute
and
.

.