Answer:
The  expected dynamic error is  0.019
The phase shift is -23.10°C
Explanation:
The explanation is shown on the first uploaded image 
 
        
             
        
        
        
Answer:
100 newton
Explanation:
newton third law of motion says to every action there is an always an equal and opposite reaction so the magnitude will stay equal but opposite direction
 
        
                    
             
        
        
        
Answer:
3.15m³ 
Explanation:
To solve this problem, let us first find the mass of the petrol from the given dimension. 
        Mass  = density x volume 
Volume of petrol  = 4.2m³
Density of petrol  = 0.3kgm⁻³  
        Mass of petrol  = 4.2 x 0.3  = 1.26kg 
So; 
       We can now find the volume of the alcohol 
  Volume of alcohol =  
  
Mass of alcohol  = 1.26kg 
Density of alcohol  = 0.4kgm⁻³  
   Volume of alcohol  =  = 3.15m³
   = 3.15m³ 
 
        
             
        
        
        
question 2 answer is ALL OF THE ABOVE
question 3 answer is WARM AND MOIST.
 
        
             
        
        
        
Reflection: a change in direction of a wave at a boundary between two different media. 
sentence: i saw my reflection in the mirror.
refraction: the bending of light as it passes from one transparent substance into another. 
sentence: when light goes through glass, it’s a refraction. 
diffraction: the bending of waves around the corners of an obstacle. 
sentence: spaced tracks on a CD act as a diffraction. 
absorption: the process or action by which one thing absorbs or is absorbed by another. 
sentence: heat waves hitting the beach usually give most of their energy to the sand. 
interference: when two waves lay on each other and their energies are either added together or cancelled out. 
sentence: interference waves can be observed with all types of waves. 
standing wave: two waves moving in opposite directions. they both have the same amplitude or frequency. 
sentence: plucking the string of a guitar is an example of standing waves.
resonance: increased amplitude that occurs when the frequency of a force is equal or close to a natural frequency. 
sentence:a buzz in your car that only occurs at a certain speed is an example or resonance.