Answer:
9.8N
Explanation:
Here we can get gravitational acceleration according to the place where object is placed by bellow equation 
g = GM/R² 
g - Gravitational Acceleration 
G - Gravitational constant (6.67×10-11)
R - Distance ( Radius )
g = 6.67 × 10-11 × 1024 /(6.37×106)²
g = 9.8 m/s²
There for 
Weight = Mass × Gravitational acceleration 
= 1×9.8
= 9.8 N
 
        
             
        
        
        
The frequency of the wave will not change. Since the change in medium doesn't affect the source of the waves, the frequency of those waves do not change.
Hope this helps! :)
 
        
             
        
        
        
Explanation:
It is given that,
Initial speed of sprinter, u = 0
Final speed of sprinter, v = 10 m/s
Time taken, t = 1.28 s
a. We need to find the acceleration of sprinter. It can be calculated using first equation of motion as :



b. Final speed of the sprinter, v = 36 km/h
Time, t = 0.000355 h
Acceleration, 

Hence, this is the required solution.
 
        
             
        
        
        
Answer:21.18 m
Explanation:
Given
initial speed u=10 m/s
height of building h=22 m
time taken to complete 22 m

initial vertical velocity =0



Horizontal Distance moved



 
        
             
        
        
        
2. The zeros in front do not matter