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lutik1710 [3]
2 years ago
6

. Are there human health risks from exposure (or overexposure) to X-rays? If so:

Physics
2 answers:
algol [13]2 years ago
3 0
<h3>yes, there are human health risks caused by exposure to x rays</h3>
  • describe the main risk (s) ::: - may cause damage to cells in the body

                                                      - large doses may lead cells to be cancerous        

                                                      - causes mutations in the DNA

  • describe common sources of exposure ( or overexposure ) :::

           - natural background radiation   e.g. - cosmic rays

           - medical radiation   e.g. - CT scans & medical x - rays

           - man - made radiation   e.g. - airport security scanners

  • describe a technology, device, or behavior that can be used for protection, or to decrease exposure :::

          - x - ray beam filters

          - digital x - ray detectors

          - technologies reduce radiation doses in radiography &  

            mammography

<em>hope that helps !!</em>

BigorU [14]2 years ago
3 0
Do you need this in like an essay form?
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A 1200 kg car is brought from 25 m/s to 10m/s over a time period of 5 seconds. Determine the force experienced by the car
aleksklad [387]
It's simple.
We know force is the rate of change in momentum.
So F=(mv-mu)/t or F=m(v-u)/t
=1200*(25-10)/5=3600N
7 0
3 years ago
A ball is thrown horizontally from the top of a building 22.3 m high. The ball strikes the ground at a point 127 m from the base
DochEvi [55]

Answer:

t = 2.13 s

Explanation:

given,

height of the building = 22.3 m

horizontal distance = 127 m

acceleration due to gravity = 9.8 m/s²

time for which ball is in motion = ?

using equation of motion

s = u t + \dfrac{1}{2}gt^2

initial velocity is zero

s = \dfrac{1}{2}gt^2

t = \sqrt{\dfrac{2s}{g}}

t = \sqrt{\dfrac{2\times 22.3}{9.8}}

       t = √4.551

        t = 2.13 s

8 0
3 years ago
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pishuonlain [190]

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electronegativity ☝️☝️☝️answer

3 0
2 years ago
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A negative charge is moving across a room from south to north. A magnetic field runs from east to west. In what direction is the
erica [24]
Here is your answer

C. towards the floor

REASON:

Using Fleming's Left hand rule we can determine the direction of force applied on a moving charged particle placed in a magnetic field.

The direction of current will be just opposite to the direction of electron(negative charge) because current moves from positive to negative terminal whereas electron moves from negative to positive terminal.

So, direction of current- North to South

Now applying Fleming's Left hand rule we get the direction of force in downward direction, i.e. towards the floor.

HOPE IT IS USEFUL
6 0
3 years ago
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Hello....I need help with this question.
musickatia [10]

Answer:

3.2 m/s²

Explanation:

Acceleration can be calculated as:

v = u + at (where v is final velocity, u is initial velocity, a is acceleration and t is time)

25 m/s  = 9 m/s  + a(5 s)  (a is unknown)

16 m/s  = a(5 s)

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We assume that this is a uniform acceleration (meaning that the velocity increases at an equal rate for those 5 seconds).

6 0
3 years ago
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