Answer:
The answer to your question is 5.4 cm
Explanation:
This problem refers to calculate the change in length in one dimension due to a change in temperature.
Data
α = 12 x 10⁻⁶
Lo = 150 meters
ΔT = 30 °C
Formula
                     ΔL/Lo = αΔT
solve for ΔL
                     ΔL = αLoΔT
Substitution
                     ΔL = (12 x 10⁻⁶)(150)(30)
Simplification
                     ΔL = 0054 m = 5.4 cm
 
        
             
        
        
        
Answer:
-0.01052 m/s
Explanation:
M = mass of ship = 
m = mass of shell = 1100 kg
v = velocity of shell = 550 m/s
u = recoil velocity of ship 
As linear momentum is conserved

The recoil velocity of the ship taking the firing direction to be the positive direction is -0.01052 m/s
 
        
             
        
        
        
Answer:
B
Explanation:
Spectroscopy measures electromagnetic radiation.
 
        
             
        
        
        
Answer:
Straight line in the direction of the tangential velocity the ball had at the moment the string broke
Explanation:
After the string breaks, the ball now disconnected from the centripetal force that was exerted via the string, continues its travel in a straight line in the direction of the tangential velocity it had at the moment the string broke.