Answer:
Resonance depends on objects, this may happen for example when you play guitar in a given room, you may find that for some notes the walls or some object vibrate more than for others. This is because those notes are near the frequency of resonance of the walls.
So waves involved are waves that can move or affect objects (in this case the pressure waves of the sound, and the waves that are moving the wall).
this means that the waves are mechanic waves.
Now, in electromagnetics, you also can find resonance frequencies for electromagnetic waves trapped in things called cavities, but this is a different topic.
Answer:
1. 5 meters per second 1 meter per second
2. 5 m/ minute 1 m/ minute
Explanation:
KE = 1/2mv^2
m=10 v=3
KE=1/2*10*3^2
KE= 45 Joules
Answer:
7.4 Ω
Explanation:
Let,
R1 = 5 Ω
R2 = 4 Ω
R3 = 6 Ω
R1 is connected series.
R2 and R3 are connected in parallel.
1 / Rp = 1 / R2 + 1 / R3
= 1 / 4 + 1 / 6
= 3 / 12 + 2 / 12
1 / Rp = 5 / 12
Rp = 12 / 5 = 2.4 Ω
Effective resistance
= R1 + Rp
= 5 + 2.4
= 7.4 Ω
Therefore, the combined resistance of 5 ohms wire arranged in series with a parallel arrangement of 4 ohms and 6 ohms wires is
7.4 Ω.
Answer: To boost its acceleration because the Earth rotates Eastwards and to ensure that any crash will occur on an ocean and huge loss in life and properties will be averted.
Explanation: A space shuttle turns to the east as soon as possible,this is to ensure that the space shuttle acceleration is supported by Earth rotation which is also Eastwards.
Another reason for ensuring that the space shuttle turns Eastwards as soon as possible is to prevent a huge loss of life if there is any chance of crash by the space shuttle.When the space shuttle turns Eastwards it will ensure that any crashing will possibly be on the an ocean hence a huge loss of life an property in populated areas will be averted or reduced.