Answer:
30m
Explanation:
Wavelength times frequency equals velocity
300 divided by 10 = 30
The momentum does not stop till both objects are at a complete stop
Very funny. Can I do all your homework for you?
The density of aluminum is 2.7 g/ml.
(a) We can find the current flowing between the walls by using Ohm's law:

where

is the potential difference and

is the resistance. Substituting these values, we get

(b) The total charge flowing between the walls is the product between the current and the time interval:

The problem says

, so the total charge is

The current consists of Na+ ions, each of them having a charge of

. To find the number of ions flowing, we can simply divide the total charge by the charge of a single ion: