2 years ago

Method

Physics

1 answer:

dmitriy555 [2]2 years ago

6 0

Answer:

Explanation:

it's too because on you measuring mass of something

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A 20 gram bullet exits the rifle at a speed of 985 m/s. The gun barrel is 0.8 m long. What

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Answer:

trick question u said bullet and rocket

Explanation:

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1 year ago

Light travels 300 000 000 m/s and one year has approximately 32 000 000 second a light year is the distance light travels in one

Lelu [443]

Explanation:

It is given that,

Speed of light, $v=300 000 000\ m/s=3\times 10^8\ m/s$

Seconds in 1 year, $t=32 000 000=32\times 10^6\ s$

We need to find the distance traveled by light in one year. Speed of an object is given by :

$v=\dfrac{d}{t}$

So,

$d=v\times t\\\\d=3\times 10^8\times 32\times 10^6\\\\d=9.6\times 10^{15}\ m$

Since,

$1\ \text{light year}=9.46\times 10^{15}\ m\\\\1\ m=\dfrac{1}{9.46\times 10^{15}}\ \text{ly}\\\\9.6\times 10^{15}\ m=\dfrac{9.6\times 10^{15}}{9.46\times 10^{15}}\\\\d=1.01\ \text{ly}$

So, the distance covered by light is 1.01 light years.

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2 years ago

Schach [20]

Monochromatic means a single colour (single frequency).
The frequency is 4.7 x 10^14 Hertz

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2 years ago

How fast (in rpm) must a centrifuge rotate if a particle 5.50 cm from the axis of rotation is to experience an acceleration of 1

KengaRu [80]

Answer:

The velocity angular must be:

$w=43994rpm$

Explanation:

The definition of the centripetal acceleration is:

$a_c=w^2*r$

where, w, is the angular velocity

we solve in order to find w:

$w=\sqrt{a_c/r}=\sqrt{119000*g/0.055}=\sqrt{119000*9.81/0.055}=4607rad/s\\w=4607rad/s*(1 revolution/(2\pi*rad))*(60s/1mn)=43994rpm$

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3 years ago

You must think of an experiment you can do in a school science lab, using normal

g100num [7]

Answer:

i thing its plastic

i dont know im just quessing

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2 years ago