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DiKsa [7]
3 years ago
12

A wave oscillates with a period of 4.25 X 10-10 s. How many waves will strike a signal detector in 3 seconds?

Physics
1 answer:
MatroZZZ [7]3 years ago
8 0

Answer:

n=7.05\times 10^9 waves

Explanation:

Given that,

A wave oscillates with a period of 4.25\times 10^{-10}\ s

We need to find the number of waves that will strike a signal detector in 3 seconds.

We know that,

Frequency = (no. of oscillations)/time

Time period = time/(no. of oscillations)

Let there are n waves that will strike

So,

n=\dfrac{3}{4.25\times 10^{-10}}\\\\=7.05\times 10^9

Hence, 7.05\times 10^9 waves will strike in 3 seconds.

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Answer with explanation:

Complete question is provided in the attachment below.

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When two lines are parallel they never meet , so the requirement to define them is lines and a plane on which they lie.

While when two lines are perpendicular , they intersect each other at a point by making a right angle between them.

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8 0
4 years ago
The dimensional formula of√(energy/) √mass is same as that of __________.
11Alexandr11 [23.1K]

Answer:

<em>D. Velocity</em>

Explanation:

<u>Energy Dimensional Analysis</u>

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\displaystyle v=\sqrt{\frac{2E}{m}}

Or, equivalently:

\displaystyle v=\frac{\sqrt{2E}}{\sqrt{m}}}

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7 0
3 years ago
A 7.5­kg block is sliding down a wall with constant velocity. The coefficient of static friction between the block and the wall
weqwewe [10]
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F_{gravity}=mg \\  \\ F_{friction}=F_{norm} \mu_k \\  \\ mg=F_{norm} \mu_k \\  \\ F_{norm}= \frac{mg}{ \mu_k} \\  \\  F_{norm}= \frac{7.5(9.79)}{0.4}=183.6N


8 0
4 years ago
1.Compare why does things look different under water vs how light rays appear to bend
Rama09 [41]

Answer:

Objects underwater seem closer to the surface than they actually are because light rays from the object bend away from the normal as they pass from water to air making the objects look closer.

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3 years ago
A jumbo jet of mass 100,000 kg during takeoff experience a thrust for each of its four engines of 50,000 N. producing an acceler
PtichkaEL [24]

Answer:

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A=0.5 M/S SQ.

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