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4 years ago

You have a mixture of substances with diifferent sized molecules. How could you seperate them?

Physics

2 answers:

laiz [17]4 years ago

4 0

Answer:

The correct answer would be to use a centerfuge.

Explanation:

A centerfuge seperates substances by density. it would pull the substance with the higher density to the bottom.

Trava [24]4 years ago

3 0

Distillation, Magnetism, Filtration, Crystallization, Extraction,

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What evidence did wegener have to support his theory of plate tectonics?

PSYCHO15rus [73]

Answer:

Wegener first thought of this idea by noticing that the different large landmasses of the Earth almost fit together like a jigsaw puzzle. The continental shelf of the Americas fits closely to Africa and Europe, and other continents showed the same trend. Wegner also analyzed both sides of the Atlantic Ocean for rock type, geological structures and fossils and noticed that there was a significant similarity between matching sides of the continents, especially in fossil plants.

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3 years ago

at stop light the truck traviling at 15m/s passes the carb as it starts from rest the truck travels at a constant relatively ,th

Kaylis [27]

What's the velocity?

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3 years ago

Can the kinetic energy of an object be negative? Can the potential energy of an object be negative? Can a potential energy funct

IceJOKER [234]

Answer:

Kinetic energy cannot be negative

potential energy is a reference dependent quantity and it can be positive as well as negative both

Since potential energy is defined only for conservative force so it can not be found for friction force

Explanation:

Kinetic energy of an object is given by the formula

$KE = \frac{1}{2}mv^2$

here we know that

m = mass of object that can not be negative

v = speed of the object and since its square is given here so it can not be negative

so Kinetic energy is always positive

potential energy is given as the energy due to the virtue of the position of object

so it is

$\Delta U = -\int F.dr$

so potential energy is a reference dependent quantity and it can be positive as well as negative both

Since potential energy is defined only for conservative force so it can not be found for friction force

5 0

4 years ago

A projectile is fired vertically from earth's surface with an initial speed of 5.3 km/s. neglecting air drag, how far above the

MaRussiya [10]

It will rise, and then fall back to the Earth’s surface.

6 0

3 years ago

the headlamp of a car takes a current of 0.4 ampere from a 12 volt supply. the energy produced in 5 minutes is

serg [7]

Voltage (V) = 12 v
Current (I) = 0.4 A
Time (t) = 5min = 300sec

Power = Voltage x Current
= V x I
= 12 x 0.4
Power = 4.8wats = 4.8W

Power = Energy / Time
Energy = Power x Time
Energy = 4.8 x 300
Energy = 1440 joules
Final answer : 1440J

5 0

2 years ago