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lesya [120]
4 years ago
5

What type of radiation was discovered coming from all regions of space?

Physics
1 answer:
geniusboy [140]4 years ago
5 0
Microwaves. They <span>are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between 300 MHz (100 cm) and 300 GHz (0.1 cm). Different sources </span>define different<span> frequency ranges as </span>microwaves<span>; the above broad </span>definition<span> includes both UHF and EHF (millimeter wave) bands.</span>
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Which of the following is considered to be a fine motor skill?
Bas_tet [7]

Answer:

drawing because Fine motor skills are the ability to make movements using the small muscles in our hands and wrists.

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3 years ago
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A 4.00-kg particle moves along the x axis. Its position varies with time according to x 5 t 1 2.0t 3, where x is in meters and t
White raven [17]

Answer:

Explanation:

Given equation is ,

x =t + 2 t³ ,

dx/dt = velocity ( v ) = 1 + 6 t²

a) kinetic energy = 1/2 m v² = .5 x 4 ( 1 + 6 t² )² = 2 ( 1 + 6 t²)²

b ) Acceleration = dv /dt = 12 t .

force( F ) = mass x acceleration = 4 x 12 t = 48 t

Power = force x velocity = 48 t x ( 1 + 6 t²). = 48 t + 288 t³ )

work done = ∫ F dx =∫ 48 t x( 1 + 6t² )dt ; =  [48t²/2 + 48 x 6 x t³ /3 = 24 t² + 96 t³ )]₀² =  864 J

6 0
3 years ago
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An airplane flies with a velocity of 750. kilometers
viktelen [127]

Answer:

650 km/hr

Explanation:

Draw a right triangle from (0.0) (Point A) down 30 degrees and to the right for a length of 750 (Point B).  Then draw a line from B up to the x axis to make a right angle (Point C).  Use the cosine function to find line AC, the vector portion of AB that lies of the x (East) axis.  Cosine(30)= Adjacent/Hypotenuse.

Cos(30) = AC/750

750*(cos(30)) = AC

AC = 649.5 km/hr

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3 years ago
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All of the following would be questions that could be scientifically investigated except:
ra1l [238]
All of the following would be questions that could be scientifically investigated except A.
That is an opinion and cannot become a fact.
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4 years ago
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This timeline correctly shows the order of time periods in the Mesozoic Era.
9966 [12]
True

It goes triassic, Jurassic, Cretaceous
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3 years ago
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