Answer:
Option C: "The rock will slow down and eventually stop"
Explanation:
Since this is a real event, and not an ideal situation where there is no friction forces acting between the frozen pond and the rock, there is going to exist some force of dynamic friction (even small) acting between them. One can look up coefficients of dynamic friction between similar objects, and realize that some small force will be acting as the rock slides on the surface of the pond. That force acts always opposite the direction of movement, therefore decelerating the rock. The rock's speed will continue reducing in magnitude until it eventually stops.
Then, the selected answer is: "The rock will slow down and eventually stop."
I believe your answer is a decrease in cloud cover.
Correct option is B
1 kWh is equal to 3.6 × 10
6
1 Watt-sec is a Joule a watt expended for a second.
Because there’s 3600 seconds in an hour,
then 3600 Ws = 1 Wh = 3600 Joules = 3.6 kJ
so 1000 Wh = 1 kWh = 1000 × 3.6 kJ = 3.6 MJ = 3.6 × 10
6
Answer:
The correct option is c: 396.9 meters.
Explanation:
First, we need to find the time at which the car landed:
Now, we can find the height of the top-level:
Since the car has only a velocity in the horizontal direction, we have:
Therefore, the correct option is c: 396.9 meters.
I hope it helps you!
The chemical formular for water is H2O.
The H aspect of the formula stands for hydrogen gas and the subscript 2 which is attached to the H symbol signifies that two atoms of hydrogen are joined together, that is two atom of hydrogen are present.
The chemical formula of water indicates that, two atom of hydrogen react with one atom of oxygen to form one molecule of water.
In chemical formulae, subscripts are normally used to indicate the number of atoms that are present in a molecule.
