Answer:
In a cardio kickboxing class, you will learn proper form for the famous jab, hooks,crosses, uppercuts, back kicks, front kicks.
Explanation:
 
        
             
        
        
        
We are given that,

We need to find  when
 when 
The equation that relates x and  can be written as,
 can be written as,


Differentiating each side with respect to t, we get,



Replacing the value of the velocity


The value of  could be found if we know the length of the beam. With this value the equation can be approximated to the relationship between the sides of the triangle that is being formed in order to obtain the numerical value. If this relation is known for the value of x = 6ft, the mathematical relation is obtained. I will add a numerical example (although the answer would end in the previous point) If the length of the beam was 10, then we would have to
 could be found if we know the length of the beam. With this value the equation can be approximated to the relationship between the sides of the triangle that is being formed in order to obtain the numerical value. If this relation is known for the value of x = 6ft, the mathematical relation is obtained. I will add a numerical example (although the answer would end in the previous point) If the length of the beam was 10, then we would have to



Search light is rotating at a rate of 0.96rad/s
 
        
             
        
        
        
They are both created by waves of different forms of energy... sound is the oscillation of other substances, called a medium, while the electromagnetic waves are oscillating through electromagnetic energy. 
        
             
        
        
        
Answer:
3 photons 
Explanation:
The energy of a photon E can be calculated using this formula:

Where  corresponds to Plank constant (6.626070x10^-34Js),
 corresponds to Plank constant (6.626070x10^-34Js),  is the speed of light in the vacuum (299792458m/s) and
 is the speed of light in the vacuum (299792458m/s) and  is the wavelength of the photon(in this case 800nm).
 is the wavelength of the photon(in this case 800nm).

Tranform the units

The band Gap is 4eV, divide the band gap between the energy of the photon:

Rounding to the next integrer: 3.
Three photons are the minimum to equal or exceed the band gap.