Answer:
x=16.10°
Explanation:
You can go through a bunch of equations, but basically the cabinet can be moved until the CG is past the vertical line of the rotation point. After the CG crosses the line the weight of the cabinet will keep the rotation going in the direction.
to Find the angle from one corner to the CG
angle =atan(52/15) = 73.90
So, to make that angle vertical...
90° = x + 73.90°
x=16.10°
Answer:
(a) 2450 J
(b) 0.0567 W
(c) 6347755 trees
Explanation:
mass of water, m = 50 kg
distance, h = 5 m
time, t = 12 hour = 12 x 3600 second = 43200 s
(a) Amount of work done, W = m x g x h = 50 x 9.8 x 5 = 2450 J
(b) Power is defined as teh rate of doing work .
Power = work / time = 2450 / 43200 = 0.0567 Watt
(c) Electrical power = 30 kWh
Time = 12 hour
Power = energy x time 30 x 12 = 360 kW = 360000 W
power by one tree = 0.0567 watt
Nuber of trees required = 360000 / 0.0567 = 6347755
Thus, the number of trees required are 6347755.
Answer:
Heat transfer q = 664015.5 J/kg (Approx)
Explanation:
Given:
Area = a
Velocity flow rate Q1 = 87a m³/s
Velocity flow rate Q2 = 360a m³/s
Find:
Heat transfer = q
Computation:
[P1][v1]/T1 = [P2][v2]/T2
[2][(87a]/300 = [1.45][360a] / T2
T2 = 900 K
Heat transfer q = Cp(T2 - T1) + (V2² /2 - V1² /2 )
Heat transfer q = 1,005(900 - 300) + (360² /2 - 87² /2)
Heat transfer q = 664015.5 J/kg (Approx)
Answer:
612 nm wavelength will be properly transmitted and 306 nm wavelength will be poorly transmitted.
Explanation:
Given that,
Refractive index = 1.50
Thickness = 204 nm
We need to calculate the wavelength
For interference due to transmitted light
Here, r = 0° , for normal incidence
For m = 1
For m = 2
Hence, 612 nm wavelength will be properly transmitted and 306 nm wavelength will be poorly transmitted.