Answer:
33 N
Explanation:
v = Velocity of fluid = 8+2 = 10 m/s
 = Density of fluid = 1.2 kg/m³
 = Density of fluid = 1.2 kg/m³
C = Coefficient of drag = 1.1
A = Cross sectional area = 0.5 m²
Drag force is given by

The drag force on the athlete is 33 N
 
        
             
        
        
        
Answer:
Decreased by a factor of 4.5
Explanation:
"We have Newton formula for attraction force between 2 objects with mass and a distance between them:

where  is the gravitational constant on Earth.
 is the gravitational constant on Earth.  are the masses of the object and Earth itself. and R distance between, or the Earth radius.
 are the masses of the object and Earth itself. and R distance between, or the Earth radius.
So when R is tripled and mass is doubled, we have the following ratio of the new gravity over the old ones:




Since  and
 and 

So gravity would have been decreased by a factor of 4.5  
 
        
             
        
        
        
E = (1/2)CV²
1 = (1/2)*(2*10⁻⁶)V²
10⁶ = V²
1000 = V
You should charge it to 1000 volts to store 1.0 J of energy.
        
             
        
        
        
Answer:
I = 0.636*Imax
Explanation:
(a) To find the fraction of the maximum intensity at a distance y from the central maximum you use the following formula:
 (1)
   (1)
I: intensity of light
Imax: maximum intensity of light
d: separation between slits = 0.200mm = 0.200 *10^-3 m
L: distance from the screen = 613cm = 0.613 m
y: distance to the central peak of the interference pattern
λ: wavelength of light = 656.3 nm = 656.3 *10^-9 m
You replace the values of all variables in the equation (1):

Hence, the fraction of the maximum intensity is I = 0.636*Imax