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-BARSIC- [3]
3 years ago
5

In the mixtures lab, you waited to see if the liquid would form lumpy or fluffy masses, which would indicate it was a _____.

Physics
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer:

B) colloid

Explanation:

Colloids, also called the colloidal system, is the term used to describe mixtures that look like a homogeneous solution, but are heterogeneous. It is not possible to realize that these mixtures are heterogeneous with the naked eye, for this reason, to find out if the solution is a colloid, the researcher must submit the substance to a process and wait to see if the liquid would form irregular or soft masses. Examples of colloids are: moisturizing cream, yogurt, milk, blood, paints and jam.

Over [174]3 years ago
5 0
B) colloid because i took the test and that the answer

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A car with a mass of 3 Kg and velocity of 40 m/s collided with a truck of a velocity of 60 m/s, if the momentum is conserved wha
Luden [163]

Answer:

the mass of the truck is 2 kg.

Explanation:

Given;

mass of the car, m₁ = 3 kg

initial velocity of the car, u₁ = 40 m/s

initial velocity of the truck, u₂ = 60 m/s

let the mass of the truck = m₂

Apply the principle of conservation of linear momemtum;

m₁u₁ = m₂u₂

m₂ = (m₁u₁) / u₂

m₂ = (3 x 40) / (60)

m₂ = 2 kg

Therefore, the mass of the truck is 2 kg.

4 0
3 years ago
If you have 80g of a radioactive substance whose half life is 2 days, how long will it take for the substance to decay to the po
Ber [7]

Answer:

6 days.

Explanation:

From radioactivity, The expression for half life is given as,

R/R' = 2⁽ᵃ/ᵇ)................... Equation 1

Where R = original mass of the radioactive substance, R' = Remaining mass of the radioactive substance after decay, a = Total time taken to decay, b = half life.

Given: R = 80 g, R' = 10 g, b = 2 days.

Substitute into equation 1

80/10 = 2⁽ᵃ/²⁾

8 = 2⁽ᵃ/²⁾

2³ = 2⁽ᵃ/²)

Equating the base and solving for a

3 = a/2

a = 2×3

a = 6 days.

5 0
3 years ago
The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21ms. The total mass of the train is 825 g.
Rudiy27

Explanation:

Average power = change in energy / change in time

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P = (½ mv²) / t

P = (½ (0.825 kg) (0.620 m/s)²) / (0.021 s)

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3 years ago
Why does it takes the outer planets so long to orbit the Sun? Try to come up with two reasons.
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well they are normally bigger than the inner planets, and they also have a bigger distance to go


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3 years ago
If you could live any where except for where you are now where would you live
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Answer:

I would live in the Atlantic ocean on a lux liner

Explanation:

:)

4 0
3 years ago
Read 2 more answers
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