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3 years ago

The electromagnetic wave that CT scans are based on is called

Physics

2 answers:

alina1380 [7]3 years ago

8 0

Answer:

X-rays

Explanation:

Electromagnetic waves are wave that do not require a material medium for transmission and they travel with a speed of light,
Electromagnetic waves have a wide range of applications in medicine, for example use of x-rays in medicine in CT scans.
CT scans uses X-rays to produce a cross-sectional image of the body or the part of the tissue being studied using x-rays and a computer.

dimaraw [331]3 years ago

4 0

Answer:

xrays.....................

Explanation:

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A scientist bred fruit flies in two separate containers with different food sources for many generations. When she put the fruit

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Fruit flies prefer mates adapted to the same food source.

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A driver's foot presses with a steady force of 20N on a pedal in a car as shown.

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Answer:

160N

Explanation:

Moments must be conserved - so.

$20 * 0.4 = F * 0.05$

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3 years ago

A sample of ascorbic acid (vitamin C) is synthesized in the laboratory. It contains 1.50 g of carbon and 2.00 g of oxygen. Anoth

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Answer:

8.467 gm

Explanation:

The law governing this problem is "The Law of Constant Composition "

As per this law, all compounds irrespective of their origin and source have the same composition and properties in their purest form

It is a simple proportion and ratio related problem.

1.50 grams of carbon require 2.0 grams of oxygen

1.0 grams of carbon will require oxygen

= $\frac{2}{1.5}$

6.35 grams of carbon will require oxygen

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2 years ago

A body which has surface area 5cm² and temperature of 727°C radiates 300J of energy in one minute. Calculate it's emissivity giv

cestrela7 [59]

<h2>Answer: 0.17</h2>

Explanation:

The Stefan-Boltzmann law establishes that a black body (an ideal body that absorbs or emits all the radiation that incides on it) "emits thermal radiation with a total hemispheric emissive power proportional to the fourth power of its temperature":

$P=\sigma A T^{4}$ (1)

Where:

$P=300J/min=5J/s=5W$ is the energy radiated by a blackbody radiator per second, per unit area (in Watts). Knowing $1W=\frac{1Joule}{second}=1\frac{J}{s}$

$\sigma=5.6703(10)^{-8}\frac{W}{m^{2} K^{4}}$ is the Stefan-Boltzmann's constant.

$A=5cm^{2}=0.0005m^{2}$ is the Surface area of the body

$T=727\°C=1000.15K$ is the effective temperature of the body (its surface absolute temperature) in Kelvin.

However, there is no ideal black body (ideal radiator) although the radiation of stars like our Sun is quite close. So, in the case of this body, we will use the Stefan-Boltzmann law for real radiator bodies:

$P=\sigma A \epsilon T^{4}$ (2)