A stream begins at an elevation of 1000 feet and flows a distance of 200 miles to the ocean. what is the average gradient?

A lightbulb is connected to a battery by two two copper wires of equal lengths but different thicknesses.

If an observer is hearing a rising pitch, that means that the frequency of the waves in their position is falling.

A student pulls horizontally on a 12 kg box, which then moves horizontally with an acceleration of 0.2 m/s^2. If the student uses a force of 15 N, what is the coefficient of kinetic friction of the floor?

A bonding molecular orbital is of lower energy (more stable) than the atomic orbitals from which it was formed. a. True b. False

Part a a microwave oven operates at 2.90 ghz. what is the wavelength of the radiation produced by this appliance? express the wavelength numerically in nanometers.

A ball rolls down a ramp. The ball has a mass of 1 kg and it has 18 joules of kinetic energy. What is the ball's speed?

Scientists now think high-fructose corn syrup may disrupt appetite control, making people more often o sleep get angry Ceat fast

What are the strengths and limitations of the doppler method?

Voltage can exist without A. current. B. resistance. C. a closed circuit. D. all of these

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of 2.60 m/s, grabs and holds onto him so that they move off together with a velocity of 1.30 m/s.