A heavy rainstorm dumps 1.0 cm of rain on a city 7 km wide and 9 km long in a 2-h period. Part A
How many metric tons (1 metricton = 103 kg) of water fell on the city? (1 cm3 of water has a mass of 1 gram = 10-3 kg.)
Express your answer using 1 significant figure.
Part B
How many gallons of water fell on the city? (1 gal = 3.785 L.)
Express your answer using one significant figure.

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)