You will need to turn this into scientific notation, so: 
1.176 × 10^1 cm^2 
To two significant figures means to two digits so since 7 is greater than 5, you will need to round up. 
 Final answer is: 
1.2×10^1 cm^2
        
             
        
        
        
Answer:
s =  1.7 m
Explanation:
from the question we are given the following:
Mass of package (m) = 5 kg
mass of the asteriod (M) = 7.6 x 10^{20} kg
radius = 8 x 10^5 m
velocity of package (v) = 170 m/s
spring constant (k) = 2.8 N/m
compression (s) = ?
Assuming that no non conservative force is acting on the system here, the initial and final energies of the system will be the same. Therefore  
•	Ei = Ef
•	Ei = energy in the spring + gravitational potential energy of the system
•	Ei = \frac{1}{2}ks^{2} + \frac{GMm}{r}
•	Ef = kinetic energy of the object
•	Ef = \frac{1}{2}mv^{2}  
•	\frac{1}{2}ks^{2} + (-\frac{GMm}{r}) = \frac{1}{2}mv^{2}  
•	s =  
s =  
s =  1.7 m
 
        
             
        
        
        
If you want to tell a friend about a fish you caught or a tree you cut down, 
you're going to tell him WHERE you were ... its position in space, 3 numbers, 
'x', 'y', and 'z' ... and also WHEN you were ... its position in time, one more 
number.  
Dimensions are numbers used to describe the location of a point, and the
difference in location between two points.  With four numbers, you can exactly 
describe the location of anything, and its distance from any other thing, in 
space and time. 
        
             
        
        
        
As per Newton's law rate of change in momentum is net force
so we can write it as


now we know that




from above equation

so he will experience 900 N force in above case
 
        
             
        
        
        
Answer:
Check the explanation
Explanation:
Kindly check the attached image below to see the step by step explanation to the question above.