Answer:
If a runner exerts 350 J of work to generate 175 W of power, it took the runner 2 seconds to do the work.
Explanation:
Power is defined as the speed with which a job is done. In other words, power is a given amount of work done in a given unit of time. That is, it is the amount of work per unit of time that some object or system produces.
Its expression is:
where:
- P: Power developed by the force doing the work. Its unit of measure in the International System is the Watt (W)
- W: Work. Its unit of measure in the International System is the Joule (J)
- t: Time during which the work is carried out. Its unit of measurement in the International System is the second (s).
In this case:
Replacing:
and solving you get:
t= 2 s
<u><em>
If a runner exerts 350 J of work to generate 175 W of power, it took the runner 2 seconds to do the work.</em></u>
Answer:
Part a)
Part b)
So this speed is independent of the mass of the rider
Explanation:
Part a)
By force equation on the rider at the position of the hump we can say
now we will have
now we have
Part b)
At the top of the loop if the minimum speed is required so that it remains in contact so we will have
at minimum speed
So this speed is independent of the mass of the rider
Define electric potential and electric potential energy.
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Im sorry i looked it up and said you coldnt convert so.... : /