Answer:
True
Explanation:
Wastewater should never be discharged into storm sewers. Storm sewers are constructed to store rainwater.
Rainwater passes through storm sewers to the nearest underground water resource if the wastewater discharge into storm sewers, then they will also pollute the ground water, so usually the dirty water is not put in the storm sewers.
Answer:
the heat transfer from the pipe will decrease when the insulation is taken off for r₂<
where;
r₂ = outer radius
= critical radius
Explanation:
Note that the critical radius of insulation depends on the thermal conductivity of the insulation k and the external convection heat transfer coefficient h .
The rate of heat transfer from the cylinder increases with the addition of insulation for outer radius less than critical radius (r₂< ) 0, and reaches a maximum when r₂ = , and starts to decrease for r₂< . Thus, insulating the pipe may actually increase the rate of heat transfer from the pipe instead of decreasing it when r₂< .
Answer:
force = 5.969 kN
Explanation:
given data
diameter of the hole D = 10 mm
thickness of sheet metal T = 1 mm
ultimate tensile strength = 190 MPa
solution
force is express as
force = ultimate tensile strength × Area ............1
and here area will be
area = π × D × T ................2
area = π × 10 × 1
area = 31.4159 mm²
so put value in equation 1 we get
force = 190 × 31.4159
force = 5969.02 N
force = 5.969 kN
Answer:
Explanation:
Given
charge is placed at
another charge of is at
We know that Electric field due to positive charge is away from it and Electric field due to negative charge is towards it.
so net electric field is zero somewhere beyond negatively charged particle
Electric Field due to at some distance r from it
Now Electric Field due to is
Now
thus
Thus Electric field is zero at some distance r=1.43 cm right of
Answer:
Explanation:
It is a circuit where there is only one path for the current, from the power supply source through all the elements of the circuit (Receiver, metallic material that allows the circulation of the electric current, Power source), so that no there is neither independence nor distinction in the different places of this.