Hold a pencil in front of your eye at a position where its blunt end just blocks out the moon. make appropriate measurements to estimate the diameter of the moon, given that the earth–moon distance is 3.8 × 105 km. assume that the pencil has a diameter of about 0.7 cm, and it just blocks out the moon if it is held about 0.75 m from the eye. express your answer using two significant figures.

Explanation:

Since the diameter of the moon position and the diameter of pencil position are in same line

so the angle made by the rays coming from the sun will be same as the angle made by the pencil lead at eye position

so we will have

here we have

= diameter of moon

= diameter of pencil lead = 0.7 cm

so we have

the force on the thing and the distance the force moves the thing

the higher the current the higher the mag field around it the higher the influence on the compass