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3 years ago

6

Two charged particles held close together are released. As they move, the force on each particle increases. Therefore, the parti

cles have _________.
Question 3 options:
A. Opposite Charges
B. Like Charges
C. No Charge

1 answer:

AnnyKZ [126]3 years ago

4 0

The answer would be B

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Indicar objetosque puedan ser observados a simple vista, con microscopio, con microscopio electrico y con miscroscopio de transm

AysviL [449]

Answer:

En esta respuesta voy a usar la unidad μm, tal que:

1 μm = 1*10^(-9) m

Objetos que pueden ser observados a simple vista:

Son todos aquellos objetos que podemos observar simplemente con nuestros ojos, con ellos podemos observar desde un edificio (con tamaños de decenas de metros) hasta algunos cabellos, que pueden tener un diámetro de 0.1 mm

Cosas más pequeñas que estás muy difícilmente se pueden ver a simple vista.

Con un microscopio podremos ver cosas del tamaño de una célula, como glóbulos blancos, rojos, algunos microorganismos, etc, los cuales rondan un tamaño de unos 10 μm. Naturalmente, distintos microscopios tendrán distintas amplificaciones (por lo que con algunos podremos ver objetos muy pequeños que con otros no).

Microscopio eléctrico:

Este microscopio usa electrones en lugar de luz para formar imágenes.

Con él podremos observar cosas como las componentes de una célula (membranas, orgánulos grandes, etc), los cuales pueden medir unos pocos nanómetros (por ejemplo, una membrana celular tendrá un tamaño de entre 5 μm y 10 μm)

Microscopio de transmisión.

Tener en cuenta que el microscopio de transmisión es un microscopio eléctrico, el cual lanza un haz de electrones al objeto que se desea observar, de tal forma que algunos de estos electrones rebotan formando así la imagen virtual amplificada que podemos observar.

Con estos aparatos podemos ver orgánulos pequeños (0.5 μm), y lo más pequeño que podemos ver (con los microscopios más potentes) son columnas de átomos (0.1 μm)

6 0

3 years ago

A massless spring with spring constant 16.4 N/m hangs vertically. A body of mass 0.193 kg is attached to its free end and then r

svet-max [94.6K]

Answer:

(A) 0.2306 m

(B) 1.467 Hz

(C) 0.1152 m

Explanation:

spring constant (K) = 16.4 N/m

mass (m) = 0.193 kg

acceleration due to gravity (g) = 9.8 m/s^{2}

(A) force = Kx, where x = extension

mg = Kx

0.193 x 9.8 = 16.4x

x = 0.1153 m

now the mass actually falls two times this value before it gets to its equilibrium position ( turning point ) and oscillates about this point

therefore

2x = 0.2306 m

(B) frequency (f) = \frac{1}{2π} x $\sqrt{\frac{k}{m}}$

frequency (f) = \frac{1}{2π} x $\sqrt{\frac{16.4}{0.193}}$

frequency = 1.467 Hz

(C) the amplitude is the maximum position of the mass from the equilibrium position, which is half the distance the mass falls below the initial length of the spring

= \frac{0.2306}{2} = 0.1152 m

8 0

3 years ago

Explain how energy from the Sun created music.

elixir [45]

-- Energy from the sun was absorbed by grass, grain, and hops, making it possible for them to grow.

-- The grass was eaten by livestock, and turned into stored beef energy.

-- The grain was harvested, pounded into flour, baked, and turned into stored bread energy.

-- The hops were harvested, soaked, and turned into stored beer energy.

-- Johannes Brahms ate beef, which his body turned into brain and muscle energy. Ludwig van Beethoven drank beer, which his body turned into energy and inspiration. John Phillip Sousa ate bread, which his body turned into leg energy to march with.

-- All of these individuals, and a lot of others, composed music which nobody had ever heard before, using the solar energy they absorbed from the stuff that they ate and drank.

4 0

3 years ago

Page worth 100 points please help

laila [671]

Answer:

a) the total circle of "initial" is Epot./Eel. and the total circle of "final" is Ekin.

b)intia: 0.5 * 50 * 4^2 = 400 J

final: 0 J = 0.5 * 50 * 0^2

Explanation:

c) in the initial phase the spring is compressed and so has Epot but then the Energie changes to be totally Ekin (in final phase) and so the Epot becomes 0

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3 years ago

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Is there any position in the elliptical orbit of a satellite where the tangential component of the acceleration is greater than

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your mom n:

is fjie nu.skvjs.,zndzfxoiv xjl,mdfk

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3 years ago