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anzhelika [568]
3 years ago
6

PLEASE HELP 15 POINTS!!!!

Physics
2 answers:
Inessa05 [86]3 years ago
5 0

Answer:

15 degrees Celsius

Explanation:

sukhopar [10]3 years ago
4 0

Answer:

I'm pretty sure its 15 degrees Celsius because that is the highest option and the table shows that the speed was faster through air at the higher temperature

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A vehicle has an initial velocity of 30 meters per second. 30 seconds later it is traveling at a velocity of 60 meters per secon
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Assuming this rate to be constant how many years will pass before the radius of the Moon's orbit increases by 3.6 x 10^6 m
Evgen [1.6K]

The number of years that will pass before the radius of the Moon's orbit increases by 3.6 x 10^6 m will be 90000000 years.

<h3>How to compute the value?</h3>

From the information given, the orbit of the moon is increasing in radius at approximately 4.0cm/yr.

Therefore, we will convey the centimeters to meter. This will be 4cm will be:

= 4/100 = 0.04m/yr.

Time = Distance / Speed

Time = 3.6 x 10^6/0.04

Time = 90000000 years.

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Complete question:

Tidal friction is slowing the rotation of the Earth. As a result, the orbit of the moon is increasing in radius at approximately 4.0cm/y. Assuming this rate to be constant how many years will pass before the radius of the Moon's orbit increases by 3.6 x 10^6

6 0
2 years ago
Why can someone standing behind a mirror not see the image?
ANTONII [103]

Answer:

The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there

4 0
3 years ago
A hard drive disk rotates at 7200 rpm. The disk has a diameter of 5.1 in (13 cm). What is the speed of a point 6.0 cm from the c
ExtremeBDS [4]

Answer:

The speed will be "3.4×10⁴ m/s²".

Explanation:

The given values are:

Angular speed,

w = 7200 rpm

i.e.,

  = 7200 \times  \frac{2 \pi}{60}

  = 753.6 \ rad/s

Speed from the center,

r = 6.0 cm

As we know,

⇒  Linear speed, v=wr

On putting the estimated values, we get

                               =753.6\times 0.06

                               =45.216 \ m

Now,

Acceleration on disk will be:

⇒  a=\frac{v^2}{r}

       =34074 \ m/s^2

       =3.4\times 10^4 \ m/s^2

3 0
3 years ago
If the initial velocity of an object was -2 meters per second
Shalnov [3]
A :-) for this question , we should apply
a = v - u by t
Given - u = -2 m/s
v = -10 m/s
t = 16 sec
Solution -
a = v - u by t
a = -10 - -2 by 16
a = -12 by 16
( cut 12 and 16 because 2 x 6 = 12 and
2 x 8 = 16 )
( cut 6 and 8 because 2 x 3 = 6 and
2 x 4 = 8 )
a = 3 by 4
a = 0.75 m/s^2

.:. The acceleration is 0.75 m/s^2.
3 0
3 years ago
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