An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.
Answer:
The balls cross paths above 1/2h
Explanation:
Let's analyze the picture when the first ball is at the top of its flight and the second ball starts to flight.
When the second ball is thrown it has the maximum speed and the first ball starts with an initial velocity equal to zero. We know that they will cross at the same time, hence the second ball will travel a longer distance, due to its velocity, than the first ball.
Therefore, the correct answer is above the midpoint of h (1/2h).
I hope it helps you!
Knowing the distance covered and the time to cover the distance,
you can calculate the car's average speed during that time.
Average speed = (distance covered) / (time to cover the distance)
Average speed = (30 km) / (20 minutes) = 1.5 km/minute .
Note: You do NOT have enough information to calculate velocity.
Answer:
because gas molecules have more kinetic energy and are smaller than liquid molecules. diffusion in liquids is slower because the particles in a liquid move more slowly. it happens faster if the temperature is increased
Answer:
Explanation:
Caty , Use the relativity formula for length. ( they teach this in H.S. ? ) it's from my Modern Physics in college, A 300 level class
L =
L = 3
L = 0.9367496998 meters
L = 0.94 meters approx