A man has a mass of 66 kg on earth. What’s his weight in pounds?
1 answer:
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Answer: 200Ω
Explanation:
Answer:
The force exerted by the block on the floor is 38.4 Newtons
Explanation:
The given parameters are;
The area of the box in contact with the floor, A = 2.4 m²
The pressure exerted by the block on the floor, P = 16 N/m²
The force exerted by the box on the floor is given as follows;
∴ F = P × A
From the question, P = 16 N/m², and A = 2.4 m²
∴ F = 16 N/m² × 2.4 m² = 38.4 N
The force exerted by the block on the floor, F = 38.4 N.
Answer:
c) 335 Hz
Explanation:
Given that the two sources:
S₁ ≡ (0 m, 2 m)
S₂ ≡ (-2 m, 0 m)
The lady hears the destructive interference for the first time when she reaches the point (0.6 m, 0 m).
So, the path difference = Δx = |S₂P - S₁P|
So,
Δx = |2.6 - 2.0881| = 0.5119 m
For, first destructive interference, Δx = λ / 2
So,
Wavelength = 1.0238 m
Also,
c = ν×λ
Where,
c is the speed of sound wave having value as 346 m/s
ν is the frequency
λ is the wavelength
So,
<u>ν = c / λ = 346 m/s / 1.0238 m ≈ 335 Hz</u>