What happens to a wave when it moves from one medium to another?

The water at the lake was so clear that perch, bass and pike could be seen. Which type of level of organization would it be? Organism, Population, Community, Ecosystem, Biome?

A police dog gets caught in a shootout. A 5 g bullet moving at 100 m·s-1 strikes the dog and lodges in his shoulder. Fortunately the dog survives. The bullet undergoes uniform acceleration and penetrates his shoulder to a depth of 6 cm.

The scientific study of how living things are classified is called

A circular space station has a diameter of 1,700 meter. The station rotates to simulate artificial gravity on the inside. What must the period be of the space station in order to simulate earths gravity?

In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.20 3 106 m/s. Find (a) the force acting on the electron as it revolves in a circular orbit of radius 0.

What happens to the resistance of a filament if it is replaced by a shorter wire?

One group of scientists feel that global warming affects the frequency of hurricanes. Another group of scientists believe that global warming does not affect the frequency of hurricanes, but it makes the average hurricane stronger.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

When the volume increased, what happened to the density?

8. Chemical weathering occurs more rapidly in what kind of climates? A. Desertlike B. Cold with high snowfall amounts C. Cool and dry D. Warm with abundant rainfall