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3 years ago

Find the missing number for each unit rate? 10/2 =?/1 and 16/4=?/1

Physics

1 answer:

Lyrx [107]3 years ago

7 0

10/2= 5/1 or just 5
16/4=4/1 or just 4

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Which of the following is a complex machine? 1) piano 2) bottle opener 3) shoehorn 4) doorknob

xeze [42]

1. piano. that is the answer is my mind

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4 years ago

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At which location would an objects weight be the greatest. 1.pluto 2.earth 3.sun 4.moon

Maslowich

Weight of the object is given as

$Weight = mg$

so weight of the object will be maximum where gravity(g) will be maximum

so here out of all given four the gravity "g" will be maximum at the surface of SUN as we know that sun will be of maximum mass out of all four planets

as we know that

$g = \frac{GM}{R^2}$

so correct answer will be

3. SUN

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4 years ago

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A migrating bird flew across a lake at an average speed of 18 meters per second. Was the distance that the bird flew across the

Natasha_Volkova [10]

Answer:

It cannot be said with 100% guarantee.

Explanation:

Since bird is travelling with 18 meters per second, that means that it covers a distance of 18 meters in 1 second.

for part 1 we convert 20 minutes into seconds, thus, 20 * 60 = 1200 seconds.

Distance covered in 1200 seconds will be:

S = v * t (S is distance , v is speed, t is time)

18 * 1200 = 21600 meters = 21.6 Kilometers

If the bird took less than 20 minutes than distance covered would be less than 21.6 Kilometer which could be greater than or lesser than 21 Kilometers. On average we can say that the distance bird travelled will be less than 21 Kilometer. But it is not definite.

For part B convert 0.4 hours into seconds to find the distance it travelled.

0.4 * 60 * 60 = 1440 seconds

Distance covered will be

18 * 1440 = 25920 meters = 25.9 Kilo meters.

Again, if the bird takes less than 0.4 hours to cover the lake, the lake will be less than 25.9 kilometers long. This means that it could be greater than or lesser than 21 kilometers. It cannot be definitive

7 0

4 years ago

The answers to the fill in the blank plz

Sladkaya [172]

Answer:

not too sure but i think it is : force - multiplied by -mass

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3 years ago

Antonina throws a coin straight up from a height of

vichka [17]

Answer:

$s=vt-\frac{1}{2}gt^2$

Explanation:

We could use the following suvat equation:

$s=vt-\frac{1}{2}gt^2$

where

s is the vertical displacement of the coin

v is its final velocity, when it hits the water

t is the time

g is the acceleration of gravity

Taking upward as positive direction, in this problem we have:

s = -1.2 m

$g=-9.8 m/s^2$

And the coin reaches the water when

t = 1.3 s

Substituting these data, we can find v:

$v=\frac{s}{t}+\frac{1}{2}gt=-\frac{1.2}{1.3}+\frac{1}{2}(-9.8)(1.3)=-7.3 m/s$

where the negative sign means the direction is downward.

5 0

3 years ago