Answer:
D
Explanation:
Most electric vehicles can go at least 100.....few, if any, can go 400 or more on a single charge
Answer:
Reynolds number is 293068.43.
Explanation:
Step1
Given:
Water temperature is 98 °F.
Diameter of the pipe is 4 in
Length of the pipe is 870 feet.
Flow rate of water is 260 gallons per minute.
Calculation:
Step2
Water kinematic viscosity at temperature 98 F is ft²/s.
Find the velocity of the water as follows:
Q=AV
V=6.638 ft/s
Step3
Expression for Reynolds number is given as follows:
Here, v is velocity, is kinematic viscosity, d is diameter and Re is Reynolds number.
Substitute the values in the above equation as follows:
Re= 293068.43
Thus, the Reynolds number is 293068.43.
Answer:
15.65 MPa 150 times of human body internal pressure
Explanation:
Given:
- Depth of the ocean for offshore drilling d = 1 mile
Find:
Determine the pressure at that location
What would happen to an unprotected, exposed person at that depth?
Solution:
- The pressure at a certain depth of a fluid can be calculated with:
P = p_w*g*d
Where, P is the pressure , p_w is the density of water ( 997 kg / m^3 ).
- Hence @ d = 1.0 mile = 1.6 km = 1600 m:
P = 997*9.81*1600
P = 15.65 MPa
- Whereas the pressure inside a human body is 101 KPa, Pressure under ocean @ 1 mile of depth is 150 times in magnitude, enough to crush the human body!
Answer:
The question is incomplete, below is the complete question "The electric potential difference between the ground and a cloud in a particular thunderstorm is . What is the magnitude of the change in the electric potential energy of an electron that moves between the ground and the cloud?"
Answer:
Explanation:
data given,
Potential difference,V=3.0*10^9V
charge on an electron, q=1e.
Recall that the relationship between potential difference (v), charge(Q) and the potential energy(U) is expressed as
from the question, we asked to determine potential energy given the charge and the potential difference.
Hence if we substitute values into the equation, we arrive at
Hence the magnitude of the change in the electric potential energy of an electron that moves between the ground and the cloud is
C is your answers!!!!!$3&2)//