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Gemiola [76]
4 years ago
7

What are positive effects of plastics?

Physics
2 answers:
IRISSAK [1]4 years ago
4 0

Answer:

Explanation:

Plastic can be used for various purposes due to the fact that it can be molted into different shapes and sizes. It is a good packaging and transport material. Due to it's sterile nature does not support microbial growth thus used in healthcare items. It is inexpensive and can be affordable by all.

tamaranim1 [39]4 years ago
3 0
<span>It is light, easily shaped, strong, and inexpensive. Its ability to guard against contamination makes it useful in sterile medical environments such as hospitals.</span>
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Qué ocurre con el espectro cuando se interpone el celofán de colores?
Travka [436]

Answer: You will only see the color that cellophane lets through

Explanation:

Let's begin by the fact the whole electromagnetic spectrum is known as "white light", which is composed by a range of colors (wavelengths).

Now, if we have a source with white light (the Sun, for example) and we interpose a cellophane of any color (let's choose red), this cellophane will act as a filter and will only let pass the color of the cellophane.

This is because the filter will absorb the other colors of the spectrum.

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When the leaves are __________________, they fall straight down.
konstantin123 [22]

Answer:Done doing there job, in the winter they have a break

Explanation:

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3 years ago
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3 years ago
Read 2 more answers
A 6.0-kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic frictio
jeka57 [31]

Answer:

a. 3.1 m/s^2

Explanation:

The equation of the forces along the directions parallel and perpendicular to the slope are:

- Along the parallel direction:

mg sin \theta - \mu_k R = ma

where :

m = 6.0 kg is the mass  of the box

g = 9.8 m/s^2 the acceleration of gravity

\theta=39^{\circ}  is the angle of the slope

\mu_k = 0.40 is the coefficient of friction

R is the normal reaction  

a is the acceleration

- Along the perpendicular direction:

R-mg cos \theta =0

From the 2nd equation, we get an expression for the reaction force:

R=mg cos \theta

And substituting into the 1st equation, we can find the acceleration:

mg sin \theta - \mu_k mg cos \theta = ma

Solving for a,

a=g sin \theta - \mu_k g cos \theta =(9.8)(sin 39^{\circ})-(0.40)(9.8)(cos 39^{\circ})=3.1 m/s^2

6 0
3 years ago
A toy car has a 1.5 A current, and its resistance is 2 Ω. How much voltage does the car require?
Brums [2.3K]

Answer:

Battery Voltage

Explanation:

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3 years ago
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