Answer:
Re = 1 10⁴
Explanation:
Reynolds number is
Re = ρ v D /μ
The units of each term are
ρ = [kg / m³]
v = [m / s]
D = [m]
μ = [Pa s]
The pressure
Pa = [N / m²] = [Kg m / s²] 1 / [m²] = [kg / m s²]
μ = [Pa s] = [kg / m s²] [s] = [kg / m s]
We substitute the units in the equation
Re = [kg / m³] [m / s] [m] / [kg / m s]
Re = [kg / m s] / [m s / kg]
RE = [ ]
Reynolds number is a scalar
Let's evaluate for the given point
Where the data for methane are:
viscosity μ = 11.2 10⁻⁶ Pa s
the density ρ = 0.656 kg / m³
D = 2 in (2.54 10⁻² m / 1 in) = 5.08 10⁻² m
Re = 0.656 4 2 5.08 10⁻² /11.2 10⁻⁶
Re = 1.19 10⁴
Is this a multiple choice question? Or would you just like me to state generally the greatest influence over how big a baby elephant will grow ?
Answer:
The correct answer is A. The sun is the energy source of the surface currents in the ocean
Answer:
Power, P = 162.53 Watts
Explanation:
Given that,
Mass, m = 200 g = 0.2 kg
Initial speed of the snake, u = 0
Final speed of the snake, v = 32 m/s
Time, t = 0.63 s
Power of an object is given by :




P = 162.53 Watts
So, the power of the rattlesnake is 162.53 Watts. Hence, this is the required solution.
Answer:
The velocity is
.
Explanation:
Given that,
Charge density of the plane 
Distance = 1.05 mm
We need to calculate the electric field due to plane of charge
Using formula of electric field

Put the value into the formula


We need to calculate potential difference
Using formula of potential difference

Put the value into the formula


We need to calculate the work requires to be done to reach the surface of the plane
Using formula of work done

Put the value into the formula


We need to calculate the velocity
Using work energy theorem




Hence, The velocity is
.