Transformer is used in rectifier step up and step down voltage?
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<u>Answer:</u> Below 12m of depth, the submarine has to submerge so that it would not be swayed by surface waves
<u>Explanation:</u>
To avoid the surface waves, a submarine has to submerge below the wave base. It is the position below which the motion of the waves is negligible.
This wave base is equal to half of the wavelength. The equation becomes:
Wave base =
We are given:
Wavelength = 24 m
Putting values in above equation, we get:
Wave base =
Hence, below 12m of depth, the submarine has to submerge so that it would not be swayed by surface waves
Answer:
1) 2.467 N
2) a) 0.248m
b) 2.3π rad/sec
Explanation:
Given data:
mass of Banana bunch ( m ) = 2.0 kg
radius of circular path ( R ) = 0.5 m
number of revolutions completed = 2
Time to complete 2 revolutions = 6 seconds
1) Determine the force to keep the motion constant for one complete revolution in every 4 seconds
F = mv^2 / r ----- ( 1 )
where V = 2πR/T
where : R = 0.5 , m = 2, T = 4 seconds
Insert values into equation 1
F = 2 * 4π^2 * 0.5/4^2
= 2.467 N
2a) Calculate the maximum distance of coin from center
angular velocity ( w ) = v/r
coefficient of static friction ( μ ) = 0.25
---- ( 1 )
mv^2/r = μmg --- ( 2 ) cancelling the mass on both sides eqn 2 becomes
v^2 = μ*g*r
dividing both sides of equation by r^2
w^2 = μ*g/r
hence determine distance ( r ) of coin from center
r = 0.25 * 9.81 / π^2 = 0.248 m
2b ) determine the maximum speed of rotation of the turntable for the coin to move relative to the turntable without slipping
distance coin is placed ( r ) = 4.7 cm = 0.047 m
find speed of rotation ( w )
w^2 = μ*g/r
w = √ 0.25 * 9.81/ 0.047
= 7.2236 rad/secs ≈ 2.3π rad/sec