I think A is the correct answer because its high is more higher compared to the others, and the mass really does not matter, to know the gravitational potential energy, we need to know how high the object is located because gravity does not show any favor to an object that has more mass or an object that doesnt
Answer:
It would be hard to make a model that shows the real sizes and distances between planets ( B )
Explanation:
Yuri building a model of the solar system will face the difficult of replicating the correct distances between the planets and the real sizes of the planets, because in model building the key factors of the Model must be represented properly.
The size of the planets and the distance between the planets are key factors when trying to model the solar system. but the distance between the planets depends on the position of the planets on their orbits which means the distances are not constant ( fixed ) hence that would be the limitation of his model.
Answer:
Part a)
When rotated about the mid point

Part b)
When rotated about its one end

Explanation:
As we know that the angular acceleration of the rod is rate of change in angular speed
so we will have



Part a)
When rotated about the mid point



now torque is given as


Part b)
When rotated about its one end



now torque is given as


Answer:
423nm
Explanation:
To find the unknown wavelength you take into account the distance y to the maximum central fringe, for light fringes and dark fringes.
- for light fringes:

- for dark fringes:

The third-order bright fringe (m= 3) of wavelength A coincides with the fourth dark fringe (m=4) of the wavelength B. Hence you have that:

hence, the wavelength B is 423nm