The frictional force required is 9000 N
Explanation:
In order to keep the car in the turn in circular motion without sliding, the frictional force must provide the centripetal force necessary for the circular motion.
Therefore, we can write:
where the term on the left is the frictional force while the term on the right is the centripetal force, and where:
m is the mass of the car
v is its speed
r is the radius of the curve
For the car in this turn, we have
m = 1000 kg
v = 30 m/s
(since the diameter is 0.20 km, the radius is half that value)
And substituting, we find
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Answer:
Direction is important when discussing force and acceleration because when a force impacts an object, the acceleration of the force sends the the object in a constant direction. Also remember velocity which is the speed of something in a given direction.
Bam
<h2>Answer: True
</h2>
Lenz's law, formulated by the physicist Heinrich Lenz in 1834, relates changes produced in the electric field by a conductor (a loop of wire, for example) with the property of varying the magnetic flux, and states that:
<em>The voltages applied to a conductor generate an electro-motive force whose magnetic field opposes any variation of the original current that produced it.
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<em>
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In other words:
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<em>the induced electricity will be in a direction that opposes the variation of the magnetic flux that produced it </em>
This is due the polarity of the induced voltage and it is an infallible consequence of the principle of conservation of energy.
Answer:
a) 315 m
b) 3025.6 m
Explanation:
The picture attached shows the full explanation for the problem.