Why does sound travel more quickly through cold water than warm water?

The molecules move more quickly in cold water, making sound transmit more quickly.

Sound does not travel more quickly through cold water.

The molecules in cold water being closer together means sound has less distance to travel.

The more rapid motion of warm water disrupts the transmission of sound.

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.