Answer:
Amplitude = 4.725 mm
Explanation:
We have got the following values :
T = 98.4 N
T is the wire tension
v = 406 m/s
v is the transverse waves speed
f = 60.5 Hz
f is the frequency
ΔU = 0.391 W
ΔU is the average power carried by the wave
If μ is the mass per unit length of the wire ⇒ μ =
If ω is the angular frequency of the wire ⇒ ω = 2π.f
So ω = 2π(60.5 Hz) and ω units are
The equation that relates all is :
ΔU = (1/2).(T/v^2).(ω^2).(A^2).v
Where A is the wave amplitude
This will give us A in meters
Answer:
1.
B) The force exerted on Earth by the Sun is stronger than the corresponding force exerted by the Moon.
Explanation:
Gravitational force is proportional to the products of the masses of the bodies and inversely proportional to the square of their distance apart.
2.
A) The Moon exerts a stronger tidal force on Earth than the Sun does
Explanation:
the Moon produces a greater tidal force on the Earth than the Sun, even though the Sun exerts a greater gravitational attraction on the earth than that exerted b the moon on the earth.
The Sun's gravitational pull on the Earth is about 175 times stronger when compared to that exerted by the Moon but has a much smaller effect on the tides. This is due to the inverse square law. The Earth's diameter is a tiny fraction of the total distance between the Sun and Earth which means that the difference in gravitational force across the Earth varies by a very small amount. On the other hand, the Moon is much closer than the Sun, thus the difference in gravitational force from the Moon across the Earth is much greater. The Sun has approximately only 44% of tidal influence than that of the Moon.
The work and heat transfer isothermal internally reversible process.
An isothermal procedure is a thermodynamic procedure in which the temperature of a gadget stays consistent. The transfer of heat into or out of the gadget occurs so slowly that thermal equilibrium is maintained. The melting of ice at 0 diploma is an example of isothermal technique. The reaction in a warmth pump is an example of isothermal manner. In Isothermal manner temperature is constant for the duration of the procedure and follows Boyles regulation.
Given,
Gas at initially P1= 2.8 bar
P2 = 14 bar
isothermal reversible process,
Compressed pressure at 60°C
(a) R = 134a
For Refrigerant 134a R134a
At P1 = 14 bar T1 = 600C
S1 = 0.9389 KJ/Kg K
V1 = 264.64 KJ/kg
At
P2 = 2.8 bar T2 = 600C
S2 = 1.1142 KJ/Kg K
V2 = 278.56 KJ/kg
T = 60 + 273 = 333K
Q= 2 Tds
2 Q=T ſ ds
= T(S2-S1)
= 333 ( 1.1142 - 0.9389 )
= 58.3749 KJ/Kg
Heat transfer Q = 58.3749 KJ/Kg
(b) air as an ideal gas.
Q= 2 Tds
2 Q=T ſ ds
= T(S2-S1)
=T-R In P2 P1
= 333 * -0.287 In 2.8 14
= 153.81 KJ/Kg
Heat transfer Q = 153.81 KJ/Kg
W = Q - ΔV
= 28.3749 - (278.56-264.64)
= 14.4549 KJ/Kg
Work W = 14.4549 KJ/Kg
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Answer:
P = 52 kPa
Explanation:
Hidrostatic pressure is defined as the product of the height of liquid (h) by its specific weight (ρ) and by the acceleration of gravity (g).
In the first scenario, the atmospheric pressure is:
In the second scenario, h = 4.2 + 1 m. Therefore, the pressure at the bottom of the barrel is:
The pressure on the bottom when water is added to fill the pipe to its top is 52 kPa.