The answer to the question is A.
Answer:
160 watts.
Explanation:
Remark
Power = Work / Time
Work = F * d
Note: Since he is running up stairs he is doing work against gravity.
Givens
- m = 50000 g kg / 1000 grms
- m = 50000 / 1000 = 50 kg
- h = 4 m
- time = 12.5 seconds
- g = 10 m/s^2
Formula
- P = W * d/t
- W = m*g *d / t
Solution
- P = 50kg * 10 m/s^2 * 4 m / 12.5
- <em><u>P = 160 watts. </u></em>
<em><u></u></em>
Answer:
The value of the power is
Explanation:
From the question we are told that
The power rating
The frequency is
The frequency at which the sound intensity decreases
The decrease in intensity is by
Generally the initial intensity of the speaker is mathematically represented as
Generally the intensity of the speaker after it has been decreased is
So
=>
=>
=>
=>
=>
taking atilog of both sides
=>
=>
=>
Answer: 8Ω
Explanation:
Since there are two resistors of 4Ω
connected in series, the total resistance (Rtotal) of the circuit is the sum of each resistance.
i.e Rtotal = R1 + R2
R1 = 4Ω
R2 = 4Ω
Rtotal = ?
Rtotal = 4Ω + 4Ω
Rtotal = 8Ω
Thus, the total resistance of the circuit is 8Ω
Answer:
Multiply the length value by 1e+6