Answer:
the highest possible average flow velocity is 17 m/s
Explanation:
given data
power = 60 W
pressure = 50 Pa
diameter = 30 cm = 0.3 m
to find out
Determine the highest possible average flow velocity in the duct
solution
we will apply here energy balance equation that is
energy in = energy out
power + m(Pv)1 = m (Pv)2
power = mv ( P2 -P1)
power = V ΔP
here P is pressure and V is maximum volume flow rate
put here value and find V
60 = V ( 50)
maximum volume v = 1.2 m³/s
and
maximum average velocity is
Velocity = 
here D is diameter and V is volume
so
velocity = 
velocity = 17 m/s
so the highest possible average flow velocity is 17 m/s
It would be newtons third law. That is because the third law states<span> that for every action (force applied) there is an equal and opposite reaction (resulting force) that will occur.</span>
Answer: Lungs and Blood Vessels
Explanation:
one opening—a branch of the bronchial tube. Your left lung is divided into two LOBES. The PLEURA are the two membranes, actually, one continuous one folded on itself, that surround each lobe of the lungs and separate your lungs from your chest wall.
In the SI system of units, the kilogram is the basic unit of mass.
In the 'customary' system, 'pound' can be either a unit of force or
a unit of mass. The way everybody uses it in everyday life ... like
your weight on the bathroom scale, or the weight of some apples
at the produce market ... it's used as a unit of force.
the other choices:
b). Newton . . . the SI unit of force, equal to about 0.225 pound
d). Cubic meter . . . a unit of volume
Answer:
d= 0.48 m
Explanation:
Given that
time ,t= 40 m s= 40 x 10⁻³ s
Constant acceleration ,a= - 60 g
We know that g= 10 m/s²
Therefore ,a=- 60 x 10 =- 600 m/s²
We know that
v= u + a t
u=initial speed
v=final sped
t=time
a=acceleration
Now by putting the value
0 = u - 600 x 40 x 10⁻³
u = 24 m/s
The distance cover before coming to stop d is given as
d= 0.48 m
