Answer:
the third statement is true
Explanation:
given data
Lenovos cost more than Dells
Lenovos cost less than Apples
solution
we have given 1st statement that is express as
cost (Lenovo) > cost (Dell) ..................1
and
2nd statement that is express as
cost (Lenovo) < cost (Apple)
so we can say it as
cost (Apple) > cost (Lenovo) ......................2
and
now above Both equation 1 and 2 can be written as
cost (Apple) > cost (Lenovo) > cost (Dell) .........................3
so we can say cost of Apples is more than the cost of Lenovos and the cost of Dells
so as that given 3rd statement is true
Answer:
t=13.49 min
Explanation:
Given that
I=300 A
A= 0.21 cm²
L= 0.85 m
Number of charge carriers per unit volume = 8.49 x 10²⁸ m⁻³.
We know speed of the electron given as
V=J/ne
J= I/A
So
V=I/neA
V=0.00105 m/s
lets take t is the time when electron travels from car battery to the starting motor
t = L/V
t=809.52 s
t=13.49 min
JUST STOP NOBODY LIKES YOU
LIKE GO AND GET A LIFE CAUSE YOU DONT HAVE ONE
The temperature at stagnation point is 78246K. The answer is an overestimate of the actual value.
<u>Explanation:</u>
Given:
Mach number, M = 38
Atmospheric temperature, Tₐ = 270K
γ = 1.4
Temperature at the station point, Tₓ = ?
We know,
Tₓ = 270 X [ 1 + (38*38) X (1.4-1) /2]
Tₓ = 270 X [ 1 + 577.6/2]
Tₓ = 270 X [1 + 288.8]
Tₓ = 270 X 289.8
Tₓ = 78246K
Therefore, the temperature at stagnation point is 78246K which seems to be inaccurate because the assumption of a calorically perfect gas holds good up to M = 5.
The answer is an overestimate of the actual value.
Answer:
I think 5 is passion and 6 is true I think and 7 is time management I'm pretty sure