Answer:
Explanation:
The eccentric formula for ellipse can be calculated using
e = (r_a - r_p) / (r_a + r_p)
r_a is the longest distance between the moon and its planet
r_p=0.27 r_a is the shortest distance between the moon and its planet
Then,
e = (r_a - r_p) / (r_a + r_p)
e = (r_a - 0.27 r_a) / (r_a + 0.27 r_a)
e = 0.73r_a / 1.27 r_a
e = 0.57
This is the moon orbital eccentric
Explanation:
Given that,
Object-to-image distance d= 71 cm
Image distance = 26 cm
We need to calculate the object distance
We need to calculate the focal length
Using formula of lens
put the value into the formula
The focal length of the lens is 35.52.
(B). Given that,
Object distance = 95 cm
Focal length = 29 cm
We need to calculate the distance of the image
Using formula of lens
Put the value in to the formula
We need to calculate the magnification
Using formula of magnification
The magnification is 0.233.
The image is virtual.
Hence, This is the required solution.
Answer:
for question 5 its
Explanation:
Through Brahe's astronomical measurements and Kepler's own drawings of the geometrical relationship between the Sun and Mars in various parts of the planet's orbit, Kepler discovered that planets moved faster when they were closer to the Sun.
Answer:
Because they propagate due to presence of magnetic and electric field.
Explanation:
An Electromagnetic wave is a transversal wave conformed of an electric field perpendicular to a magnetic field.
Maxwell established that an electric field can generate a magnetic field and vice versa, which allows the propagation of the electromagnetic wave without a medium.