It take 365 1/4 days basically, one year.
Answer:
The value is
Explanation:
Generally the moon's radial acceleration is mathematically represented as
Here is the angular velocity which is mathematically represented as
substituting for T(i.e the period of the moon ) we have
=>
From the question r(which is the radius of the orbit ) is evaluated as
substitute for R and H
=>
So
Answer:
The focal length of the concave mirror is -15.5 cm
Explanation:
Given that,
Height of the object, h = 20 cm
Radius of curvature of the mirror, R = -31 cm (direction is opposite)
Object distance, u = -94 cm
We need to find the focal length of the mirror. The relation between the focal length and the radius of curvature of the mirror is as follows :
R = 2f
f is the focal length
f = -15.5 cm
So, the focal length of the concave mirror is -15.5 cm. Hence, this is the required solution.
He main boat is sending some wave that is reflected back to the sender when it collide with an object ( the frequency differs which is an indication of the distance separating the sender and receiver)
Explanation:
Substances become neutral at the number 7 because at this point, the acid and Base are equal and becomes neutralized