Answer: The angular magnification M = 2.1
Explanation:
If the jeweler holds the diamond at the focal point of the magnifying glass, its image will be produced infinitely far away.
This gives an angular magnification of M = N/f
Since the diamond is held 5.68 cm from the magnifying glass, 
Then, M = (N - 5.68)/f
Where N = 22.0 cm and f = 7.7 cm
M = (22 - 5.68)/7.7
M = 2.1
 
        
             
        
        
        
Answer:
<h2>10890 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula

m is the mass
v is the velocity
From the question we have

We have the final answer as
<h3>10890 J</h3>
Hope this helps you
 
        
             
        
        
        
Answer:
112.17 m/s
56.427 years
Explanation:
h = 3.18 x 10^10 m 
R = 6.4 x 10^6 m 
r = R + h = 3.18064 x 10^10 m
M = 6 x 10^24 kg
The formula for the orbital velocity is given by 


v = 112.17 m/s
Orbital period, T = 2 x 3.14 x 3.18064 x 10^10 / 112.17 
T = 0.178 x 10^10 s
T = 56.427 years