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creativ13 [48]
3 years ago
8

two clear, colorless liquids are poured together. A bright yellow solid forms. What physical properties have changed?

Physics
1 answer:
jek_recluse [69]3 years ago
3 0
Change in state(from liquid to solid) and change in colour I believe.
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A police car drives 100 miles in 75 minutes. What is its average speed in miles per hour?
Y_Kistochka [10]
Its average speed is 80 miles per hour because 75 minutes=1.25 hours, and the police car travels 80 miles in 1.25 hours, so I just need to take 100 divided 1.25 equal 80. As a result, the police car travels 80 miles in one hour. Hope it help!
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1. A girl drops a ball off the roof of her house. It takes the ball 2 seconds to hit the ground. How tall
Masja [62]

If the acceleration constant..

you can use the formula s = ut + 1/2at²

Known that :

s = ?

u = 0

t = 2s

a = 10ms-²

Then you can apply the formula

s = ut + 1/2at²

s = 0 + 1/2(10)(2)²

s = 5 × 4

s = 20m

Answer : 20m

Explanation :

The gravity can be 9,8 or 10. Also im not sure how people teach you but in my school, if the ball goes down the gravity is positive and not negative thats why i put 10ms-² and not -10ms-²

s = displacement/distance

u = initial speed

a = acceleration

t = time

sorry if im wrong

5 0
3 years ago
The German V-2 rocket was the first man made object in space
Tresset [83]
Yes it was. All the creator wanted to do was go into space
4 0
2 years ago
How does the doppler effect affect the velocity from a sourse that is approaching you?
Firlakuza [10]
The apparent change in the frequency of a sound caused by the motion of either The Listener or the source of the sound
3 0
3 years ago
A body moving at .500c with respect to an observer
lakkis [162]

Answer:

0.8c and -0.14c

Explanation:

The first fragment will have a speed of +0.5c respect of a frame of reference moving at +0.5c

Lest name v the velocity of the frame of reference, and u' the velocity of the object respect of this moving frame of reference.

The Lorentz transform for velocity is:

u = (u' + v) / (1 + (u' * v) / c^2)

u = (0.5c + 0.5c) / (1 + (0.5c * 0.5c) / c^2) = 0.8c

The other fragment has a velocity of u' = -0.6c respect of the moving frame of reference.

u = (-0.6v + 0.5c) / (1 + (0.5c * 0.5c) / c^2) = -0.14c

6 0
2 years ago
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