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3 years ago

The most practical way to guard against allergic reactions in restaurants guests is to

Physics

1 answer:

lord [1]3 years ago

8 0

Read the ingredients on the menu carefully and ask the waitress if theres any other ingredients you should know about

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Which planet has the most gravity and why

djyliett [7]

heya mate

the planet Jupiter has most gravity due to its size

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3 years ago

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Suppose that you observe light emitted from a distant star to be at a wavelength of 525 nm. The wavelength of light to an observ

Tomtit [17]

Answer:

The velocity of the star is 0.532 c.

Explanation:

Given that,

Wavelength of observer = 525 nm

Wave length of source = 950 nm

We need to calculate the velocity

If the direction is from observer to star.

From Doppler effect

$\lambda_{0}=\sqrt{\dfrac{c+v}{c-v}}\times\lambda_{s}$

Put the value into the formula

$525=\sqrt{\dfrac{c+v}{c-v}}\times950$

$\dfrac{c+v}{c-v}=(\dfrac{525}{950})^2$

$\dfrac{c+v}{c-v}=0.305$

$c+v=0.305\times(c-v)$

$v(1+0.305)=c(0.305-1)$

$v=\dfrac{0.305-1}{1+0.305}c$

$v=−0.532c$

Negative sign shows the star is moving toward the observer.

Hence, The velocity of the star is 0.532 c.

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3 years ago

What pulls all objects in the universe, including the moon and earth and the su

Salsk061 [2.6K]

It's called gravity, it attract the sun toward the gravitational pull making everything circulate. I don't really know how to explain it though.

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3 years ago

Suppose of methane are burned in air at a pressure of exactly and a temperature of . Calculate the volume of carbon dioxide gas

Licemer1 [7]

There are supposed to be numbers in these places:

" _____ of methane"

" ... pressure of exactly _____ "

" ... temperature of _____ "

I've seen a lot of questions with missing numbers before, but I think this is the first time I ever saw a question where even the number of significant digits to round the answer to is missing.

"Round your answer to _____ significant digits."

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3 years ago

Which of the following statements are true about gravity? Check all that

mamaluj [8]

Answer:

c d and e

Explanation:

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2 years ago