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2 years ago

Which of the following statements is true?

Physics

1 answer:

9966 [12]2 years ago

5 0

Answer:

c) the distance a star is from Earth affects how bright it appears in the night sky.

Explanation:

a) there are MUCH bigger stars in the universe then the sun. The sun is said to be a medium star.

b) If the sun were to burn out it would affect earth a lot. The sun is needed for Earth's survival. Earth needs the heat from the sun or it'd a big cold planet full of ice that probably couldn't support life.

d) the big bang theory supports that the universe is growing

I know c), is correct

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A car is travelling to the right with a speed of 40 m/s when the driver slams on the brakes. The car skids for 4 s with constant

vazorg [7]

Answer:

10m/s^2

Explanation:

Given data

velocity= 40m/s

time= 4 seconds

Acceleration a =????

We know that

a= velocity/time

substitute

a=40/4

a= 10m/s^2

Hence the acceleration will be 10m/s^2

3 0

2 years ago

In separate experiments, a large number of particles (all with the same charge, but with a wide variety of masses and speeds) ar

likoan [24]

Answer:

they have the same mass

Explanation:

The force applied by the field is a function of the charge and velocity, so the acceleration experienced by a particle will be dependent upon its mass. Particles in orbits with the same radius are exhibiting the same acceleration, so must have the same mass.

7 0

2 years ago

Which have the longest wavelengths--light waves, x-rays, or radio waves?

Tresset [83]

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2 years ago

Why are different constellations<br> of stars seen during different<br> seasons?

slamgirl [31]

Actually, they're not. There's a group of stars and constellations arranged
around the pole of the sky that's visible at any time of any dark, clear night,
all year around. And any star or constellation in the rest of the sky is visible
for roughly 11 out of every 12 months ... at SOME time of the night.

Constellations appear to change drastically from one season to the next,
and even from one month to the next, only if you do your stargazing around
the same time every night.

Why does the night sky change at various times of the year ? Here's how to
think about it:

The Earth spins once a day. You spin along with the Earth, and your clock is
built to follow the sun . "Noon" is the time when the sun is directly over your
head, and "Midnight" is the time when the sun is directly beneath your feet.

Let's say that you go out and look at the stars tonight at midnight, when you're
facing directly away from the sun.

In 6 months from now, when you and the Earth are halfway around on the other
side of the sun, where are those same stars ? Now they're straight in the
direction of the sun. So they're directly overhead at Noon, not at Midnight.

THAT's why stars and constellations appear to be in a different part of the sky,
at the same time of night on different dates.

5 0

3 years ago

Read 2 more answers

In a fission experiment observed by Hahn and Strassman, uranium-235 was bombarded by neutrons. The products of this ission react

wlad13 [49]

Answer:

helium-4 (90%) or tritium (7%).

Explanation:

hope it helped u buddy

7 0

3 years ago