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4 years ago

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Physics

1 answer:

erma4kov [3.2K]4 years ago

6 0

Answer:

A) Natural sciences

B) Life sciences

C) Ptolemy

D) Tycho Brahe

Explanation:

A) In the hierarchy of the sciences within the different branches of sciences, we have the following order of the sciences

Formal Sciences → Physics, Chemistry → Life Sciences → Social science

Formal Sciences → Physics, Chemistry → Physics, (Astronomy, Geoscience)

According to the theory of the hierarchy by Auguste Comte, scientific disciplines which are further up the hierarchy (disciplines further to the right of the above flow chart) depends on the developments and or discoveries of the disciplines which precedes them (disciplines further to the left of the above flow chart) in the hierarchy of the sciences

Therefore, the natural sciences rely on the methodological apparatus of formal sciences, especially in mathematics

B) The branch of science which is a sub branch of natural sciences, that includes the study of living organisms, including the study of living things, human beings, plants, animals, microorganisms in the fields of biology, anatomy, botany, and zoology respectively is known as life sciences

C) The geocentric model of the universe, which makes the Earth the center of the whole Universe such that the heavenly bodies and the stars revolved round the Earth was proposed by Ptolemy in the 2nd century CE.

D) The Tycho's supernova of 1952, is so called because of his detailed account of the observation of the supernova.

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4 years ago

What is the momentum of a photon having the same total energy as an electron with a kinetic energy of 100 keV?

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Explanation:

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3 years ago

An object has the acceleration graph shown in (Figure 1). Its velocity at t=0s is vx=2.0m/s. Draw the object's velocity graph fo

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Answer:

Explanation:

We may notice that change in velocity can be obtained by calculating areas between acceleration lines and horizontal axis ("Time"). Mathematically, we know that:

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$v_{b} = v_{a}+ \int\limits^{t_{b}}_{t_{a}} {a(t)} \, dt$

Where:

$v_{a}$ , $v_{b}$ - Initial and final velocities, measured in meters per second.

$t_{a}$ , $t_{b}$ - Initial and final times, measured in seconds.

$a(t)$ - Acceleration, measured in meters per square second.

Acceleration is the slope of velocity, as we know that each line is an horizontal one, then, velocity curves are lines with slopes different of zero. There are three region where velocities should be found:

Region I (t = 0 s to t = 4 s)

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$v_{4} = 2\,\frac{m}{s}+\left(-2\,\frac{m}{s^{2}} \right) \cdot (4\,s-0\,s)$

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$v_{6} = -6\,\frac{m}{s}+\left(1\,\frac{m}{s^{2}} \right) \cdot (6\,s-4\,s)$

$v_{6} = -4\,\frac{m}{s}$

Region III (t = 6 s to t = 10 s)

$v_{10} = -4\,\frac{m}{s} +\int\limits^{10\,s}_{6\,s} {\left(2\,\frac{m}{s^{2}} \right)} \, dt$

$v_{10} = -4\,\frac{m}{s}+\left(2\,\frac{m}{s^{2}} \right) \cdot (10\,s-6\,s)$

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4 years ago

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Explanation:

Hi there!

Due to conservation of energy, the potential energy (PE) of the mass at a height of 3.32 m will be transformed into elastic potential energy (EPE) when it falls on the mattress:

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Where:

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The maximum compression distance is 0.1289 m, then, the maximum elastic potential energy will be the following:

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Then, using the equation of gravitational potential energy:

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m = 16.6 kg

The maximum mass that can fall on the mattress without exceeding the maximum compression distance is 16.6 kg.

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3 years ago