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lisabon 2012 [21]

3 years ago

11

What were the physical activities in your childhood that you still do today? Do you spend more time now in doing these activitie

s as compared before?

1 answer:

user100 [1]3 years ago

5 0

I used to play tag or run around a lot and sometimes i do these activities but its a lot less now that i am older

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Monochromatic light passes through a double slit, producing interference, the distance between the slit centres is 1.2 mm and th

Alik [6]

Answer:

The wavelength of the light is $7200\ \AA$ .

Explanation:

Given that,

Distance between the slit centers d= 1.2 mm

Distance between constructive fringes $\beta= 0.3\ cm$

Distance between fringe and screen D= 5 m

We need to calculate the wavelength

Using formula of width

$\beta=\dfrac{D\lambda}{d}$

Put the value into the formula

$0.3\times10^{-2}=\dfrac{5\times\lambda}{1.2\times10^{-3}}$

$\lambda=\dfrac{0.3\times10^{-2}\times1.2\times10^{-3}}{5}$

$\lambda=7.2\times10^{-7}\ m$

$\lambda=7200\ \AA$

Hence, The wavelength of the light is $7200\ \AA$ .

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3 years ago

If an element is a semi-conductor, which classification correctly describes it?

stiks02 [169]

Metal

Explanation:

semiconductors are materials which have a conductivity between conductors (generally metals)

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If this decay has a half-life of 10.2 years, what mass of 60.8g carbon-14 will remain after 20.4 years

OLEGan [10]

20.4 years is 20.4/10.2 = 2 half-life cycles, which means a quarter of the starting mass or 15.2 g will remain after this time.

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3 years ago

Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chem

ExtremeBDS [4]

Answer:Rubidium or answer 1

Explanation:took quiz

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If you heat soup on a stove, what happens to the movement of the soup’s particles?

deff fn [24]

Answer: B. The particles mover faster.

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