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3 years ago

Name TWO WEAKNESSES of the model pictured below

Physics

1 answer:

Nikolay [14]3 years ago

7 0

Answer:

Here are a few:

1) The orbital radius of these planets is ridiculously small an in no way representative of their actual radii.

2) The planets will only line up like that once every 5200 years, making this very unrepresentative of their usual relations - although this does make their order in distance from the sun.

3) The nebulae, comet, lens flare, and other junk in the background is incorrect.

4) If this is meant as a representation of the planets, then Pluto should not be there as it is now considered a planetoid.

5) The planets are incorrectly scaled both to each other and to the sun.

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A uniform electric field, with a magnitude of 370 N/C, is directed parallel to the positive x-axis. If the electric potential at

dem82 [27]

Answer:

$\Delta U = 0.2072 J$

Explanation:

Potential difference between two points in constant electric field is given by the formula

$\Delta V = E.\Delta x$

here we know that

$E = 370 N/C$

also we know that

$\Delta x = 2.1 - 1.9 = 0.2 m$

now we have

$\Delta V = 370 (0.2) = 74 V$

now change in potential energy is given as

$\Delta U = Q\Delta V$

$\Delta U = (2.80 \times 10^{-3})(74)$

$\Delta U = 0.2072 J$

3 0

4 years ago

In a closed system, _____ energy is equal to potential energy plus kinetic energy.

Kobotan [32]

The answer is mechanical

4 0

4 years ago

Read 2 more answers

A cylindrical solid has a diameter of 1.62cm and a height of 5.04 cm. If the mass of the object is 50.12 g, what is the density

zimovet [89]

Density of cylinder is 4.82 g/cm³.

<h3>What is density of a substance?</h3>

Density is the ratio of the mass and the volume of a substance

Density = mass/volume

The density of the cylinder is:

mass of cylinder = 50.12 g

volume of cylinder = πr²h

r = 1.62/2 = 0.81 cm

h = 5.04 cm

volume of cylinder = 22/7 * 0.81² * 5.04

volume of cylinder = 10.39 cm³

Density of cylinder = 50.12 g/10.39 mL

Density of cylinder = 4.82 g/cm³

In conclusion, density of a substance is the ratio of mass and volume of the substance.

Learn more about density at: brainly.com/question/1354972

#SPJ1

4 0

2 years ago

Describe the properties of the dust grains found in the space between stars.

Hoochie [10]

99% Gas with an abundance hydrogen and helium 1% dust grain, solid frozen particle containing several atoms and molecules.

4 0

3 years ago

Los barbijos de tela, a diferencia de los quirúrgicos, poseen una filtración de partículas de aproximadamente 0.000003979 [m]. E

shusha [124]

Answer:

El valor en notación científica es 3.98*10⁻⁶.

Explanation:

La notación científica es una manera rápida de representar un número utilizando potencias de base diez. Esta notación se utiliza para poder expresar muy fácilmente números muy grandes o muy pequeños.

Los números se escriben como un producto:

a*10ⁿ

donde:

a es un número real mayor o igual que 1 y menor que 10, al cual se le agrega un punto decimal después de la primera cifra si se trata de un número que no es entero.

n es un número entero, que recibe el nombre de exponente u orden de magnitud. Representa el número de veces que se desplaza la coma. Siempre es un número entero, positivo si se desplaza a la izquierda, negativo si se desplaza a la derecha.

Para escribir el número 0.000003979 en notación científica, se realizan los siguientes pasos:

Se mueve la coma decimal hacia la derecha tantos espacios hasta llegar a la derecha del primer dígito.
Se escribe entonces este número, que será el coeficiente a en la expresión del producto anterior.
Se escribe la base 10 con el exponente igual a la cantidad de espacios que se mueve la coma. Este es un número negativo porque la coma se desplaza a la derecha.

Entonces, en este caso:

a= 3,979 ≅ 3,98
n= -6

Entonces,<u><em> el valor en notación científica es 3.98*10⁻⁶.</em></u>

5 0

3 years ago