Answer:
Spring constant of the spring will be equal to 9.255 N /m          
Explanation:
We have given mass m = 0.683 kg 
Time taken to complete one oscillation is given T = 1.41 sec
We have to find the spring constant of the spring 
From spring mass system time period is equal to  , here m is mass and K is spring constant
, here m is mass and K is spring constant 
So 

Squaring both side 


So spring constant of the spring will be equal to 9.255 N /m 
 
        
             
        
        
        
Answer:
<h2>82.94 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 28.8 × 2.88 = 82.944
We have the final answer as
<h3>82.94 N</h3>
Hope this helps you
 
        
             
        
        
        
Answer:
During a total lunar eclipse, the moon and sun are on the exact opposite sides of the Earth, leaving the moon entirely in the Earth's shadow. During a partial lunar eclipse, only part of the moon is in the Earth's shadow.
Explanation:
 
        
             
        
        
        
Compression is above the equilibrium and rarefaction is below
        
             
        
        
        
Answer:
Explanation:
The equation for Power is 
P = Work/time to do work and the equation for work is
Work = FΔx
We first need to find the amount of work done, then we can find the power it took to do that work.
W = 2000(9.8)(28) so
W = 550,000 N*m
Now we fill that into the power equation:
 gives us
 gives us 
P = 18000 Watts. But we need kW, so we divide by 1000 to get 
P = 18 kW of power.