If the ground is level, then the snowball can never have 
any more kinetic energy than it hand when it left your hand.
If more mass sticks to it as it makes its way across the lawn,
then it must slow down, so that its 
                 KE = (1/2) (present mass) (present speed)²
never exceeds the KE you gave it when you tossed it. 
And we're not even talking yet about all the energy it loses 
by scraping through the snow and mashing down the blades 
of grass in its path.
        
                    
             
        
        
        
Answer:
thickness t = 528.433 nm 
Explanation:
given data 
wavelength λ1 = 477.1 nm 
wavelength λ2 = 668.0 nm 
n = 1.58 
solution
we know for constructive interference condition will be 
2 × t × μ = (m1+0.5) × λ1     ....................1
2 × t × μ = (m2+0.5) × λ2     ....................2 
so we can say from equation 1 and 2 
(m1+0.5) × λ1 = (m2+0.5) × λ2 
so 
 ..............3
     ..............3
put here value and we get  
 
  
 = 1.4
   = 1.4
 ...................4
   ...................4
so we here from equation 4 
m1+0.5  = 7 
m1 = 3    .................5
m2+0.5 = 4
m2 = 2    .................6
so now put value in equation  1
2 × t × μ = (m1+0.5) × λ1 
2 × t × 1.58 = (3+0.5) ×  477.1 
solve it we get 
thickness t = 528.433 nm 
 
        
             
        
        
        
Answer:
A) 1.88 * 10^17 m
B) 1.22 * 10^34 J
C) 1.95 * 10^34 J
Explanation:
Parameters given:
Mass of planet = 7.00 * 10^25 kg
Radius of orbit = 6.00 * 10^11 m
Force exerted on planet = 6.51 * 10^22 N
Velocity of planet = 2.36 * 10^4 m/s
A) The distance traveled by the planet is half of the circumference of the orbit (which is circular).
The circumference of the orbit is 
C = 2 * pi * R
R = radius of orbit
C = 2 * 3.142 * 6.0 * 10¹¹
C = 3.77 * 10¹² m
Hence, distance traveled will be:
D = 0.5 * 3.77 * 10¹²
D = 1.88 * 10 ¹² m/s
B) Work done is given as:
W = F * D
W = 652 * 10²² * 1.88 * 10¹¹
 
W = 1.22 * 10³⁴ J
C) Change in Kinetic energy is given as:
K. E. = 0.5 * m * v²
K. E. = 0.5 * 7 * 10^25 * (2.36 * 10^4)²
K. E. = 1.95 * 10³⁴ J