A. Through the direct contact of particles
Answer:2.47
Explanation:
So, the beaker weighs 1.40N when filled with water, brine of density weighs about 1.7N, you add the density + water. Have a good day!
Answer:

Explanation:
According to coulombs law force between two charges is given by
here R is the distance between both the charges which is given as 25 cm
We have given force F =0.036 N
So
As
is constant which value is 


Answer:
3 m/s
Explanation:
The slope is distance divided by time, also known as 'speed'.
15 meters / 5 seconds = 3 meters per second.