Too easy way too easy I mean it’s easy
Answer:
259 Hz or 269 Hz
Explanation:
Beat: This is the phenomenon obtained when two notes of nearly equal frequency are sounded together. The S.I unit of beat is Hertz (Hz).
From the question,
Beat = f₂-f₁................ Equation 1
Note: The frequency of the other instrument is either f₁ or f₂.
If the unknown instrument's frequency is f₁,
Then,
f₁ = f₂-beat............ equation 2
Given: f₂ = 264 Hz, Beat = 5 Hz
Substitute into equation 2
f₁ = 264-5
f₁ = 259 Hz.
But if the unknown frequency is f₂,
Then,
f₂ = f₁+Beat................. Equation 3
f₂ = 264+5
f₂ = 269 Hz.
Hence the beat could be 259 Hz or 269 Hz
Answer:
Time = 12.06 seconds
Explanation:
Given the following data;
Power = 2.984 KW = 2984 Watts
Workdone = 3.60 × 10^4 J = 36000 J
To find the time;
Power = workdone/time
Time = workdone/power
Time = 36000/2984
Time = 12.06 seconds
Therefore, the engine would have to run for 12.06 seconds.
Answer:
Explanation:
In this case we will use the Bohr Atomic model.
We have that: 
We can calculate the centripetal force using the coulomb formula that states:
Where K=
and r is the distance.
Now we can say:
The mass of the electron is = 
Kg
The charge magnitud of an electron and proton are= 
Substituting what we have:
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so:
