Answer:
(a) when the distance x is 0.3 m, the boundary layer thickness is 0.0055 m = 5.5 mm.
(b) when the distance x is 3 m, the boundary layer thickness is 0.0174 m = 17.4 mm.
(c) when the distance x is 30 m, the boundary layer thickness is 0.055 m = 55 mm.
Explanation:
For a laminar flow:
;
where;
d is the boundary layer thickness = 11 mm
x is the distance from the leading edge = 1.2 m
C is a constant =?
<u>Part (a):</u> when x = 0.3m
d = C√x
= 0.010042 × √0.3
= 0.0055 m = 5.5 mm
<u>Part (b):</u> when x = 3.0 m
d = C√x
= 0.010042 × √3.0
= 0.0174 m = 17.4 mm
<u>Part (c):</u> when x = 30 m
d = C√x
= 0.010042 × √30
= 0.055 m = 55 mm
Answer:
a) iv. Displacement per unit time
b) ii. m/s2
c) this question is wrong
d) iv. m
Answer:
Weight = normal force = 24.5 N
Explanation:
Given that,
Mass of a dog, m = 2.5 kg
We need to find its weight and the normal force that it feels.
The weight of an object is given by :
W = mg
Where g is the acceleration due to gravity
The normal force is balanced by the weight of an object. So,
Weight = normal force = 24.5 N
Answer:
<h2>8.0995×10^-21 kgms^-1</h2>
Explanation:
Mass of proton :
Speed of Proton:
Linear Momentum of a particle having mass (m) and velocity (v) :
Magnitude of momentum :
Frome equation (2), magnitude of linear momentum of the proton :
Answer:
Distance-time graphs. If an object moves along a straight line, the distance travelled can be represented by a distance-time graph.
Explanation:
