The frequency of a wave increases when the energy increases
        
             
        
        
        
Yes, that’s very inspiring.
        
             
        
        
        
Answer:
h = 27.17 m
Explanation:
First, we will calculate the total mechanical energy of the system at the bottom point of the third loop:
Mechanical Energy = Kinetic Energy + Potential Energy

where,
E = Total Mechanical Energy = ?
m = mass of the roller coaster = 1200 kg
v = velocity of the roller coaster = 22 m/s
g = acceleration due to gravity = 9.81 m/s²
h = height of roller coaster = 2.5 m
Therefore,

Now, the total mechanical energy at the top position of the first hill must also be the same:

where,
v = 0 m/s
h = ?
Therefore,

<u>h = 27.17 m</u>
 
        
             
        
        
        
The kinetic energy of the car is 
Explanation:
The kinetic energy of an object is the energy possessed by the object due its motion. It is given by

where
m is the mass of the object
v is its speed
For the car in this problem, we have:
m = 1000 kg is its mass
v = 30 m/s is its speed
Substituting into the equation, we find the kinetic energy of the car:

Learn more about kinetic energy:
brainly.com/question/6536722
#LearnwithBrainly
 
        
             
        
        
        
The given statement is true.
<u>Explanation:</u>
Professional assessments are nothing but training a person to do or complete a work in a good and professional manner.  Professional assessments are one kind of way to make the person or individual do all the respective work in a skillful and professional manner.
They are a reliable method to improve certain qualities of an individual and can be considered as the only main method to determine the health related fitness of an individual.  There are no other health methods that can be used to determine the heath level of an individual.  Hence the above provided statement can be concluded as true.