The distance covered by the plane is 600 km
Explanation:
The motion of the plane is a uniform motion, so at constant velocity, therefore we can use the following equation
where
d is the distance covered
v is the velocity
t is the time interval considered
For the plane in this problem,
v = 400 km/h
t = 1.5 h
Substituting, we find the distance covered:
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Answer
given,
Air speed, v = 20 m/s
Pressure gradient, = 105 N/m³
distance,dl = 0.5 m
density of air = 1.23 kg/m³
Airspeed at 0.5 m = ?
relation between pressure gradient and speed changed
neglecting the gravity
Speed of the air at 0.5 m
V = 20 - 2.13
V = 17.87 m/s
Hence, the speed of air is equal to V = 17.87 m/s
Answer:
for a cell to produce a current the cell electrodes of the cell must have a potential difference option A is the correct answer
Answer: Option(d) is the correct option
Explanation:
Grashof number (Gr) is the ratio that is between buoyant force to viscous force persist on fluid on layer of velocity boundary.It is in dimensionless form.
According to the question ,
Laminar flow has < (Gr) < as range of boundary layer for free convection.
For transition to take place into turbulent form, it has range of in terms of free convection.
So, if Grashof number (Gr) is increased then it might tend to change flow from laminar form into turbulent form for free convection.
Other options are incorrect because increasing in Grashof number does not always change the flow mechanism from laminar to turbulent or vice versa neither may cause to laminar flow. Therefore, the correct option is option(d).