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Andrei [34K]
3 years ago
6

A particle is constrained to move along a straight line through O.

Physics
1 answer:
olga2289 [7]3 years ago
7 0
<span>x=1.9+2.5t+3.7<span>t2</span></span> <span>V=2.5−3.7t</span> V=0 when it stops 0=2.5-7.4t t=0.3378 a) <span>x=1.9+2.5t+3.7<span>t2</span></span> (t=0.3378) x=3.1167m b) <span>V=2.5−3.7t</span><span> (t=0) V=2.5 but because it's returning here velocity is -2.5</span>
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Sound and light are both found as _____, with a variety of ____. The sun, a source of light waves specifically, releases a type
Novosadov [1.4K]

Answer:

Waves; wavelength; electromagnetic energy; ultraviolet light.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases.

Light wave can be defined as an electromagnetic wave that do not require a medium of propagation for it to travel through a vacuum of space where no particles exist.

Hence, sound and light are both found as waves, with a variety of wavelength. The sun, a source of light waves specifically, releases a type of electromagnetic energy. It can be found as UVA or UVB types. These lights give off different levels of ultraviolet light, some of wich can be harmful.

Additionally, the ultraviolet spectrum is divided into three categories and these are; UVA, UVB and UVC.

6 0
2 years ago
Arocket with an initial velocity of 20 m/s another engine that gives it an acceleration of 4 m/s ^ 2 over 10 secondsHow far did
ExtremeBDS [4]

Answer:

50m

   

Explanation:

Given parameters:

Initial velocity  = 20m/s

Acceleration  = 4m/s²

Time  = 10s

Unknown:

Distance traveled by the rocket  = ?

Solution:

To solve this problem use the expression below;

   

     v² = u² + 2as

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance

  final velocity = 0

 Insert the parameters and solve;

  0²  = 20² + 2 x 4 x s

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         s  = 50m

   Disregard the negative sign because distance cannot be negative.

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