Answer:
20.243 s
Explanation:
Because the escalator and person moving in the same direction, relative velocity can be calculated by summing the velocity of the escalator and velocity of the person.  
The speed of escalator can be calculated as,
 
Relative velocity 
 
 
Therefore total time required to take the person to get to the top 

 
        
             
        
        
        
Answer:
Chemical energy is energy that chemical substance to undergoes a chemical reaction to make a new substance. 
Explanation:
<h3>hope this makes sense and helps</h3>
 
        
                    
             
        
        
        
Answer:
It depends on where the temperature is dropping, in which body so to speak. Generally, the temperature adapts to the two bodies, for example if a hot piece of metal meets a cold one, the two will continue until they are at an equal temperature, an intermediate temperature.
 
        
                    
             
        
        
        
The energy of a light wave is calculated using the formula
E = hc/λ
h is the Planck's constant
c is the speed of light
λ is the wavelength
For the ir-c, the range is
<span>6.63 x 10^-34 (3x10^8) / 3000 = 6.63 x 10 ^-29 J
</span>6.63 x 10^-34 (3x10^8) / 1000000 = 1.99 x 10^-31 J
For the ir-a, the range is
6.63 x 10^-34 (3x10^8) / 700 = 2.84 x 10^-28 J
6.63 x 10^-34 (3x10^8) / 1400 = 1.42 x 10^-28 J
        
                    
             
        
        
        
Answer:
Explanation:
Given
Free fall acceleration on mars 
Time Period of pendulum on earth 
Time period of Pendulum is given by 

for earth



(b)For same time period on mars length is given by 



