Wood, water, Forests. The rest can have harm to the nature.
Work is (force applied) x (distance through which the force moves).
Since the suitcase doesn't move up or down during the 15 minutes,
no work is done ... zero, zip, nada ... according to the real Physics
definition of 'work'.
<span>B) equal pressures are applied from your foot to the pedal to the brake pads.
That would be the answer.
Hope this helps!</span>
There are two numbers i.e (c) and (d) with 4 significant figures, since we start counting the first non-zero digit from the left, therefore, A. Has 1 significant figure, B has 5 significant figurea and C,D have 4 significant figures.