A wheelbarrow is experiencing two forces. One is pushing 5 N to the east and the other 5 N in the exact opposite direction. What
2 answers:
Answer:
its acceleration must be 0.
Explanation:
According the second Newton's law, the net force applied in a object is equal to the mass of the object multiplied by its acceleration:
In this case, the net force is
What makes sense since both forces have the same value and opposite directions.
Since the mass of the object can't be zero, the acceleration is the one that must be 0 in order fulfill the equation of the second newton's law.
Another option is that, since both forces are opposite, the wheelbarrow could be at rest. Though this is correct, this is not always true.
In conclusion, the only statement that always is true about the wheelbarrow's motion is that its acceleration must be 0.
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Answer:
Explanation:
(The following exercise is written in Spanish and for that reason explanation will be held in Spanish)
Supóngase que el planeta tiene una órbita circular, el período de rotación del planeta es:
Asimismo, la rapidez angular se describe como función de la aceleración centrípeta:
Ahora se reemplaza en la ecuación de período:
La aceleración experimentada por el planeta es:
Se reemplaza en la ecuación de período:
La distancia del planeta con respecto al sol es finalmente despejada:
Finalmente, se sustituyen las variables y se determina la distancia:
Answer:
Explanation:
Power rating of a solar panel is 1.50 KW/m²
It generates 2.50 MJ in an hour.
We need to find the area of this type of solar panel would be needed. The power pertaining to generate this energy is given by :
Let A be the area of the solar panel. It is calculated as follows :
So, the required area of the solar panel is .