Answer:
Yeah ice floats on water.
Observation 
Example in those areas were ice is found like Antarctica ice is found on top of water.
 
        
             
        
        
        
Answer:
D...............................
 
        
             
        
        
        
Answer:
0.173 m.
Explanation:
The fundamental frequency of a closed pipe is given as
fc = v/4l .................. Equation 1
Where fc = fundamental frequency of a closed pipe, v = speed of sound  l = length of the pipe.
Making l the subject of the equation,
l = v/4fc ................ Equation 2
also
v = 331.5×0.6T ................. Equation 3
Where T = temperature in °C, T = 18.0 °c
Substitute into equation 3
v = 331.5+0.6(18)
v = 331.5+10.8
v = 342.3 m/s.
Also given: fc = 494 Hz,
Substitute into equation 2
l = 342.3/(4×494)
l = 342.3/1976
l =0.173 m.
Hence the length of the organ pipe = 0.173 m.
 
        
             
        
        
        
Newton's 3 laws are... 
inertia: things tend to continue to do what they are doing. 
Change: to make something change you need a force to change it. the force needed = the mass times its acceleration 
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Resistance: When you push on something, it pushes back. 
From yahoo answers
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Answer:
The force is pull or push acting on the body which tends to change its state of rest or of motion is called force.
There are two types of force:
1.Contact force 
2. Non-Contact