Answer:
4
Explanation:
Divide 30 meters by 7.5 and you´re answer is 4. This is how I would think you solve the problem
Answer:
tan is 15 for that triangle
PART A)
By Snell's law we know that

here we know that



now from above equation we have


so it will refract by angle 39.3 degree
PART B)
Here as we can see that image formed on the other side of lens
So it is a real and inverted image
Also we can see that size of image is lesser than the size of object here
Here we can use concave mirror to form same type of real and inverted image
PART C)
As per the mirror formula we know that



so image will form at 30 cm from mirror
it is virtual image and smaller in size
A = 94.22 Newtons
b = 58.16 kg
Gravity on the moon is 1.62 m/s^2