Answer:
The average field strength is 1.8T
Explanation:
The magnitude of the wire whose length is L carrying a current I and making an angle θ with a magnetic field of density B is calculated using the following formula.
B = F/(I * L * Sin(θ)
Given that F = 2.16N
I = 30 A
L = 4cm = 4 * 10^-2m
θ = π/2
By substitution
B = 2.16/(30 * 4 * 10^-2 * Sin(π/2))
B = 1.8T
Hence, the average field strength is 1.8T
Answer:
(a). The total sound intensity .
(b). The combined sound level 76.19 dB.
Explanation:
Given that,
Sound level = 75.0 dB
We need to calculate the noise
Using formula of intensity
Put the value into the formula
We need to calculate the sound intensity
(a). We need to calculate the total sound intensity
The total sound intensity
(b). We need to calculate the combined sound level
Using formula of sound level
Hence, (a). The total sound intensity .
(b). The combined sound level 76.19 dB.
Answer:
<em>18808.7 m/s^2</em>
Explanation:
Given
Length of the pendulum L = 1.44 m
Number of complete cycles of oscillation n = 1.10 x 10^2
total time of oscillation t = 2.00 x 10^2 s
The period of the T = n/t
T = (1.10 x 10^2)/(2.00 x 10^2) = 0.55 ^-s
The period of a pendulum is gotten as
T =
where g is the acceleration due to gravity
substituting values, we have
0.55 =
0.0875 =
squaring both sides of the equation, we have
7.656 x 10^-3 = 144/g
g = 144/(7.656 x 10^-3) = <em>18808.7 m/s^2</em>