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2 years ago

Define homogeneous.

Physics

2 answers:

Radda [10]2 years ago

7 0

Homogeneous means of being likewise or some kind.

C, would be your answer.

Hope this helps!

arsen [322]2 years ago

7 0

Answer:

Composed of parts or elements that are all of the same kind

Explanation:

The mixture can be of two types i.e. homogeneous mixture and heterogeneous mixture.

The mixture that is composed of parts or elements that are all of the same kind are homogeneous mixture. The composition remains uniform throughout the mixture.

For example : air, vinegar, rainwater,steel are some examples of homogeneous mixture. Mouth wash is also a homogeneous mixture. It is a mixture of alcohol along with certain chemicals.

Hence, the correct option is (C) Composed of parts or elements that are all of the same kind.

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Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 second

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In which direction does the sun appear to move across the sky?

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If we consider a system where the y-axis as the South-North line, and the x-axis as the West-East line (where North and East are the positive sides)

We know that the sun goes from East to West, so in our system, the sun goes from the positive side of the x-axis to the negative side of the x-axis.

Where we would see this if we were standing right in the equator line.

If we where in other point of the planet, the Sun will stil move from East to West, but it will have a little tilt along the path, so we will have a little displacement in the y-axis. This displacement will depend on where we are, if we are at the North of the equator, we will se that the sun seems to go a little towards South as it goes to the West side.

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2 years ago

a golf ball is hit with a velocity of 30.0 m/s at an angle of 25 degrees about the horizontal. how long is the ball in the air a

Pie

Ok so use trigonometry to work out the vertical component of velocity.

sin(25) =opp/hyp
rearrange to:
30*sin(25) which equals 12.67ms^-1

now use SUVAT to get the time of flight from the vertical component,

V=U+at

Where V is velocity, U is the initial velocity, a is acceleration due to gravity or g. and t is the time.

rearranges to t= (V+u)/a

plug in some numbers and do some maths and we get 2.583s

this is the total air time of the golf ball.

now we can use Pythagoras to get the horizontal component of velocity.

30^2-12.67^2= 739.29
sqrt739.29 = 27.19ms^-1

and finally speed = distance/time

so--- 27.19ms^-1*2.583s= 70.24m

The ball makes it to the green, and the air time is 2.58s

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2 years ago