2 years ago

Which statement best compares an asteroid with Earth?

Physics

1 answer:

IgorLugansk [536]2 years ago

6 0

Answer:C) Both have rocky composition

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write down the total momentum for two marbles of mass,m, both moving at velocity, v. What is the kinetic energy of the system.

frosja888 [35]

Mv + mv = 2mv providing each momentum is in the same direction.
1/2 mv^2 + 1/2 mv^2 = mv^2

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2 years ago

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Which of the following correctly arranges the planets by the size of their diameter in increasing order?

Oksanka [162]

Answer:

Mercury<Venus<Earth<Mars<Jupiter< Saturn< Uranus<Neptune

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1 year ago

A body travels 80 meters in 8 seconds <br> at a steady speed calculate it's average speed<br>

iVinArrow [24]

Explanation:

avg spd = total distance/total time

=80/8=10m/s

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3 years ago

A. A light wave moves through glass (n=1.5) at an angle of 25°. What angle will it have when it moves from the glass into air (n

torisob [31]

PART A)

By Snell's law we know that

$n_1sin i = n_2 sin r$

here we know that

$n_1 = 1.5$

$i = 25 degree$

$n_2 = 1$

now from above equation we have

$1.5 sin25 = 1 sin r$

$r = 39.3 degree$

so it will refract by angle 39.3 degree

PART B)

Here as we can see that image formed on the other side of lens

So it is a real and inverted image

Also we can see that size of image is lesser than the size of object here

Here we can use concave mirror to form same type of real and inverted image

PART C)

As per the mirror formula we know that

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + \frac{1}{60} = \frac{1}{20}$

$d_i = 30 cm$

so image will form at 30 cm from mirror

it is virtual image and smaller in size

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3 years ago

What is the electron configuration of this element? *for ne

Serhud [2]

Answer:

[He]2s²2p⁶

Explanation:

8 0

3 years ago

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