Rain is falling into a puddle, you notice the distance between each ripple is 0.05m. The waves are spreading out at a rate of about 0.5m/s, what is the frequency of the rain dropping?

The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the range of 25 to 45 lb/in.2. suppose a tire has a pressure of 27.5 lb/in.2 . convert 27.5 lb/in.2 to its equivalent in atmospheres.

How does the structure of methanol differ from the structure of methane

The charge on a charged sphere is; 1. concentrated at its center 2. distributed uniformly throughout its volume 3. clustered on its center 4. distributed uniformly over its surface