A person is rowing across the river with a velocity of 4. 5 km/hr northward. The river is flowing eastward at 3. 5 km/hr. What is the magnitude of her velocity (v) with respect to the shore?

Describe the path of a ray that approaches a mirror parallel to the principal axis.

You can melt ice by applying pressure because the solid/liquid line has a slope.

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).