Answer:
The efficiency is just 0.016
Explanation:
The efficiency is given by the useful energy ÷ by the total energy.
1 W is the same that 1 joule per second
If you do the math:
1.6/100=0.016
Gurl- I’m a college student and never seen this what y’all learning
Answer:
Toward the centre of the circular path
Explanation:
The can is moved in a circular path: this means that it is moving by circular motion (uniform circular motion if its tangential speed is constant).
In order to keep a circular motion, an object must have a force that pushes it towards the centre of the circular trajectory: this force is called centripetal force, and its magnitude is given by
![F=m\frac{v^2}{r}](https://tex.z-dn.net/?f=F%3Dm%5Cfrac%7Bv%5E2%7D%7Br%7D)
where m is the mass of the object, v its tangential speed, r the radius of the trajectory. This force always points towards the centre of the circular path.
The potential difference between the ends of the wire is 37.5 V
Explanation:
We can answer this question by using Ohm's law, which states the relationship between current, resistance and potential difference in a wire:
![V=RI](https://tex.z-dn.net/?f=V%3DRI)
where
V is the potential difference
R is the resistance
I is the current
For the wire in this problem, we have:
I = 3 A is the current
is the resistance
Solving the equation for V, we find the potential difference:
![V=RI=(3)(12.5)=37.5 V](https://tex.z-dn.net/?f=V%3DRI%3D%283%29%2812.5%29%3D37.5%20V)
Learn more about current, resistance and potential difference here:
brainly.com/question/4438943
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