Wavelength = (speed) / (frequency)
Wavelength = (330 m/s) / (1320/s)
Wavelength = (330/1320) m
Wavelength = 0.25 m
<em>Wavelength = 25 cm</em>
Answer:
Explanation:
From the first law of thermodynamics
Q=ΔU+W
Q=heat supplies to the system
ΔU=change in internal energy of the system
W= work done by the gas by the system
Q =12 KJ
ΔU==(mR/k-1)ΔT
ΔU=*(460-400)
=14.924 KJ
Q=ΔU+W
W=-2.924 KJ
=+
=work done by the air
= P(V2-V1)
=mRT2-mRT1
=mR(T2-T1)=0.138*0.287*(460-300)=
=6.33 KJ
=+
=-2.924-6.33
=-9.26 KJ
Answer:
sucking in <u>air</u> through the <u>turbine.</u>
Explanation:
When an airplane turbine operates, it sucks air through it, compresses the air, causes its pressure to increase in the same way as its temperature and ejects it at high speed through the nozzle-shaped output, creating a high output speed and push force capable of moving the plane horizontally.
Vehicles of the fire department are equipped with water pumps of high pressure, in such a way that, when operating, send a flow of water with high pressure and speed through the hose, this force output of the water is sometimes much greater than the force with which the fireman holds the hose, and hence the difficulty to maneuver the hose.
Now when the fireman points the hose with the water at high pressure and speed coming out of it, into a wall close enough. The Fireman will experience newton's third law in all its splendor, which says that every force of action leads to a reaction, so that the reaction could hurt the fireman operating the hose.
Answer:
The answer is "Option d".
Explanation:
In the given scenario, when a surface is drawn in a magnetic field, the number of magnetic field lines that enter a surface must be equal to the number left because we know that magnetic field lines are always a closed curve hence the number of magnetic field lines that join the surface should match the total left.