Answer:
The flow speed at 2.6 cm diameter pipe is 1.2
Explanation:
Given :
Speed at 4 cm diameter pipe
Area of 4 cm diameter pipe
Area of 2.6 cm diameter pipe
From the equation of continuity,
Find the speed at 2.6 cm diameter pipe,
Therefore, the flow speed at 2.6 cm diameter pipe is 1.2
Answer:
there is an infinite number of images because it is reflected off of the mirrors. the images in the mirror will "move" if either mirror is shifted because the angle of reflection. the images are the same because its just a repeated reflection. i see the object on both sides, repeated as far as i can see in both mirrors.
Explanation:
To find the x component use the following formula, where Ф = theta = the angle 'a' makes with the x axis.
Answer:
λ = 1.2 x 10⁻⁶ m
Explanation:
Given that,
slit separation, d = 0.050 mm
= 5 x 10⁻⁵ m
Distance between the fringes, D = 5.00 m
distance between the fringes, x = 12.0 cm
= 0.12 m
wavelength of the light = ?
the separation between the fringe is given by
where as n = 1
λ = 1.2 x 10⁻⁶ m
Answer:
3.7 km/h
Explanation:
Let's call v the proper speed of the boat and v' the speed of the water in the river.
When the boat travels in the direction of the current, the speed of the boat is:
v + v'
And it covers 50 km in 3 h, so we can write
(1)
When the boat travels in the opposite direction, the speed of the boat is
v - v'
And it covers 50 km in 5.4 h, so
(2)
So we have a system of two equations: by solving them simultaneously, we find the value of v and v':
Subtracting the second equation from the first one we get:
So, the speed of the water is 3.7 km/h.