The distance an object falls from rest through gravity is 
                        D  =  (1/2) (g) (t²) 
           Distance  =  (1/2 acceleration of gravity) x (square of the falling time)
We want to see how the time will be affected 
if  ' D ' doesn't change but ' g ' does. 
So I'm going to start by rearranging the equation
to solve for ' t '.                                                      D  =  (1/2) (g) (t²)
Multiply each side by  2 :         2 D  =            g    t²  
Divide each side by ' g ' :      2 D/g =                  t² 
Square root each side:        t = √ (2D/g)
Looking at the equation now, we can see what happens to ' t ' when only ' g ' changes:
  -- ' g ' is in the denominator; so bigger 'g' ==> shorter 't'
                                             and smaller 'g' ==> longer 't' .-- 
They don't change by the same factor, because  1/g  is inside the square root.  So 't' changes the same amount as  √1/g  does.
Gravity on the surface of the moon is roughly  1/6  the value of gravity on the surface of the Earth.
So we expect ' t ' to increase by  √6  =  2.45 times.
It would take the same bottle  (2.45 x 4.95) = 12.12 seconds to roll off the same window sill and fall 120 meters down to the surface of the Moon.
        
             
        
        
        
Use Newton's second law F = mass * acceleration
In your problem F = 500, and we know gravity is working on it so use a = 9.81
Substitute into the equation
500 = m * 9.81
m = 50.97 kg
 
        
             
        
        
        
Answer:
value of heat is 18 J
2. step by step
formular w=p(volume1-volume2)
w= 1.0×10^5(0.0006-0.0004)
w= 40 J
 
        
             
        
        
        
52800000000000000000000000000000000000000000
        
             
        
        
        
Answer:
alcohol thermometer is preferred for a very cold region. Alcohol thermometer is preferred for a very cold region because its freezing point of alcohol is - 117°C. So, it can measure the temperature of the very cold region.