Answer:
Omqnp
Explanation:
I have done this before and got it correct
 
        
             
        
        
        
Answer:
Mechanical waves are waves that require a medium. This means that they have to have some sort of matter to travel through. These waves travel when molecules in the medium collide with each other passing on energy. One example of a mechanical wave is sound.
 
        
             
        
        
        
Answer:
V = 11.83 m/s
Explanation:
Given the following data;
Mass = 2000 kg 
Force = 10000N
Distance = 14 m
To find the final velocity of the car;
First of all, we would determine the acceleration of the car;
Acceleration = force/mass
Acceleration = 10000/2000
Acceleration = 5 m/s²
Next, we would use the third equation of motion to find the final velocity;
 
 
Where;
V represents the final velocity measured in meter per seconds. 
U represents the initial velocity measured in meter per seconds. 
a represents acceleration measured in meters per seconds square. 
S represents the displacement measured in meters.
Substituting into the equation, we have;
V² = 0² + 2*5*14
V² = 0 + 140
V = √140
V = 11.83 m/s
 
        
             
        
        
        
Answer: C. T
Explanation:
Period is a unit of time; and in the context of waves or oscillations it is defined as <em>"the </em><u><em>time </em></u><em>elapsed between two equivalent points on the wave or oscillation".</em>
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It is important to note Period (denoted by  ) is one of the most important factors (along with the amplitude, frequency and velocity) to describe and characterize a wave.
) is one of the most important factors (along with the amplitude, frequency and velocity) to describe and characterize a wave.
In addition, Period has an inverse relation with the frequency  , this means that if we are given the frequency of a wave, we can inmediatly know its Period.
, this means that if we are given the frequency of a wave, we can inmediatly know its Period.
 
        
             
        
        
        
Average speed = (total distance covered) / (time to cover the distance)
-- Traveling at 40 mph for 1 hour, the distance covered is 40 miles.
-- Traveling at 60 mph for 1 hour, the distance covered is 60 miles.
-- Total distance covered = (40 miles) + (60 miles) = 100 miles
-- Total time = (1 hour) + (1 hour)  =  2 hours
-- Average speed = (100 miles) / (2 hours)
<em>Average speed = 50 miles per hour</em>