Aboat takes 3.0  hr  to travel 27  km  down a river, then 6.0  hr  to return. how fast is the river flowing?

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string