Answer:
6
Explanation:\
tbh I dont really know I just looked it up and it said six
You are sitting behind the bus driver on a moving bus in relation to a person standing on the sidewalk you are what
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relative to sidewalk you are moving with the driver
It is probably gas as pure water starts boiling at 100d degrees C
Answer:
A. It will increase
Explanation:
Area of a wire is:
R = ρL/A
where ρ is the resistivity of the wire,
L is the length of the wire,
and A is the cross-sectional area.
If A decreases, while ρ and L stay the same, then R will increase.
<span>First lets determine the equation. Well at the top of the circle both the normal force and the weight are in the same direction. So we have Fnet=N+mg. Since this is a circular path the Fnet is also = to (mv^2)/r.
We convert the situation where the rock is no longer in contact with the bottom to terms relevant to the equation. So, what is a requirement for normal force? The object must be in contact with the surface, meaning it can't be in free fall. Realizing this means that the instant when the object does not touch the bucket is where the normal force = 0.
Now we have N+mg=(mv^2)/r where N=0 is the case we are interested in. This leaves 0+mg=(mv^2)/r
Solve for v:
v=(gr)^(1/2) or v=3.28m/s
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