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Arada [10]
3 years ago
7

1. What types of natural phenomena could serve as time standards?​

Physics
2 answers:
Alex Ar [27]3 years ago
8 0
In practice, something that follows a very predictable pattern can be used as a time standard. This include things like radioactive decay, planetary orbit, and the speed of light, among others.
GrogVix [38]3 years ago
7 0

Answer:

The movement of Sun and moon

Explanation:

When the sun rise.it is am and when it sets .it is pm.

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The empire state building is 1,450 feet tall. King Kong weighs 20 tons and he climbs to the very top. If he jumps off the top, w
lozanna [386]

Answer:velocity=93.12m/s

Explanation:

We shall use conservation of energy to solve this problem

we have

Potential energy of King Kong at top of building = His kinetic energy at the bottom

Potential energy of an object = m\times g\times h = 20000 kg

Where m is mass of an object(20000 kg)

g is accleration due to gravity = 9.81m/s^{2}

h is the height above the surface of earth = 1450 feet = 441.96 meters

Applying values we get

(P.E)_{TOP}=(20000\times 9.81\times 441.96) Joules\\\\(P.E)_{TOP}= 86712.552KiloJoules......................(i)

Now Kinetic energy is given by

(K.E)_{Bottom}=\frac{1}{2}mv^{2}.......................(ii)

Equating i and ii we get

86712.552 =\frac{1}{2}mv^{2}

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

Applying values we get

v=\sqrt{\frac{2\times 86712.552\times 10^{3}}{20\times 10^{3}}}\\\\v= 93.12m/s

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3 years ago
What can be used to make complicated concepts and systems easier to study and understand?
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4 0
3 years ago
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Linearly polarized light whose Jones vector is [0 1] (horizontally polarized) is sent through a train of two linear polarizers.
ivann1987 [24]

Answer:

Following are the solution to the given question:

Explanation:

The input linear polarisation was shown at an angle of 2 \mu. It's a very popular use of a half-wave plate. In particular, consider the case \mu = 45 \pm, at which the angle of rotation is 90\pm. HWP thereby provides a great way to turn, for instance, a linear polarised light that swings horizontally to polarise vertically. Illustration of action on event circularly polarized light of the half-wave platform. Customarily it is the slow axis of HWP that corresponds to either the rotation. Note that perhaps the vector of polarization is "double-headed," i.e., the electromagnetic current swinging back and forward in time. Therefore the turning angle could be referred to as the rapid axis to reach the same result. Please find the attached file.

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3 years ago
Which is an example of a scientist using a conceptual model to describe a volcano?
Yuri [45]
I would say D would be the answer. but is this even a real like homework question 

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4 years ago
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If a topographic map included a 6,000 ft. mountain next to an area of low hills, which would best describe the contour lines on
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The answer to the given question above would be option B. If a topographic map included a 6,000 ft. mountain next to an area of low hills, the statement that best describe the contour lines on the map is this: <span>The contour lines around the mountain would be very close together. Hope this helps.</span>
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