Sound travels slowest through what temperature of water? 20°c 40°c 60°c 80°c

The sound will travel slowest in 20°C.

Explanation:

Formula used to calculate the speed of sound is given by:

There is a direct relationship between the speed of the sound and temperature.

If the temperature is less, the speed of sound will also be less and will be the slowest and vice-versa.

As, from the given temperatures, the lowest temperature is 20°C and hence, the speed of sound will be the slowest at this temperature.

where’s the list ? the question is incomplete

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.