A scientist is studying how large tsunamis form. The scientist uses the following model to examine the properties of large tsunamis. They know that tsunamis, or ocean waves with a very large wave amplitude, happen after another event, such as an earthquake or landslide has dramatically shifted the earth’s crust and therefore the water above that crust. While it is difficult to see the amplitude and wavelength of the individual waves while they are far out at sea, we can see how large they are as they get into shallower areas as they approach the shoreline. Based on the model and explanation, how does an earthquake cause tsunamis? A. An earthquake’s seismic wave provides mechanical energy to the ocean. As energy is added the amplitude of the wave is increased. B. As the earthquake vibrates more waves are created. More waves means that there is less space between them decreasing the wavelength. Because amplitude is inversely related to wavelength, this means that the waves must be less energetic. C. As the earthquake creates more waves the frequency is increased. Because amplitude is directly related to frequency, the amplitude is also increased. D. An earthquake’s seismic waves overlap and build upon each other as the earth continues to shake. As the earth shakes more, the amplitude of the wave increases.

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r