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3 years ago

If the time for 20 vibrations is 100 second then find

Physics

2 answers:

Lilit [14]3 years ago

8 0

hey guy

the vibration per second is frequency

then for 20 vibration time taken is 100 second

in 1 second 20/100 vibration took place

it means 0.2 is frequency

for time period , we have

t=1/f

=1/0.2

coldgirl [10]3 years ago

8 0

Explanation:

It is given that,

Number of vibrations, N = 20

Time taken, t = 100 s

2. The total number of vibrations per unit time is called the frequency of the object. It is given by :

$f=\dfrac{20}{100}$

f = 0.2 Hz

1. The reciprocal of the frequency of the particle is called its time period. It is given by :

$T=\dfrac{1}{f}$

$T=\dfrac{1}{0.2}$

T = 5 seconds

Hence, this is the required solution.

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3 years ago

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zubka84 [21]

Answer:

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3 years ago

According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 × 103 m/s, the uncertai

GREYUIT [131]

Explanation:

It is given that,

Uncertainty in the speed of an electron, $\Delta v=3.5\times 10^3\ m/s$

According to Heisenberg uncertainty principle,

$\Delta x.\Delta p=\dfrac{h}{4\pi}$

$\Delta x$ is the uncertainty in the position of an electron

Since, $\Delta p=m\Delta v$

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3 years ago

When droplets of water in the atmosphere act like prisms, the colors in sunlight undergo?

dexar [7]

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3 years ago

The captain of a boat wants to travel directly across a river that flows due exst with a speed of 100 m/sHe starts from the sout

Salsk061 [2.6K]

Answer:

86.51° North of West or 273.49°

Explanation:

Let V' = velocity of boat relative to the earth, v = velocity of boat relative to water and V = velocity of water.

Now, by vector addition V' = V + v'.

Since v' = 6.10 m/s in the north direction, v' = (6.10 m/s)j and V = 100 m/s in the east direction, V = (100 m/s)i. So that

V' = V + v'

V' = (100 m/s)i + (6.10 m/s)j

So, we find the direction,Ф the boat must steer to from the components of V'.

So tanФ = 6.10 m/s ÷ 100 m/s

tanФ = 0.061

Ф = tan⁻¹(0.061) = 3.49°

So, the angle from the north is thus 90° - 3.49° = 86.51° North of West or 270° + 3.49° = 273.49°

7 0

3 years ago