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ArbitrLikvidat [17]
3 years ago
10

Your teacher has given each lab group four liquids. Each liquid has been tinted using food coloring. Your teacher has asked you

to pour all four liquids together and then devise a method to separate the four back into their individual containers. This is an illustration of your lab partner pouring the four liquids into a beaker. "This will be easy to do!" both you and your partner exclaim. Explain why it will be easy to separate the four liquids. A) The liquids will not mix, but rather separate, because they all have a unique density. B) The liquids will not mix, but rather separate, because they all have a different weight. C) The four liquids have a different boiling point so you can heat the mixture and each liquid will boil off at a different temperature. D) The four liquids separate into four layers because you have poured them into the beaker: oil, water, oil, water. We know that oil and water do not mix.
Physics
2 answers:
Inga [223]3 years ago
7 0

Answer:  A

Explanation:      

Rzqust [24]3 years ago
7 0

Answer:

A

Explanation:

You might be interested in
Which statement is the best interpretation of the ray diagram shown?
n200080 [17]

Answer:

Explanation:

First off, this lens is concave. Second, the image is obviously smaller, and third, the only thing that is NOT obvious, is the fact that real images are always upside down and virtual images are always right-side-up. So the choice you're looking for is D.

6 0
3 years ago
(II) How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.3 m across a rough floor without acceleration, if
Gwar [14]

Answer:

2324 J

Explanation:

The formula for work is:

W=F*d

where F is the force applied, and d is the distance moved, in this case d=10.3m

and we need to find F.

Since the crate is not moving up or down, we conclude that the <u>normal force must be equal to the weight </u>of the object:

N=w

where N is the normal force and w is the weight, which is: w=mg, where g is the gravitational acceleration g=9,81m/s^2 and m is the mass m=46kg.

---------

Thus the normal force is:

N=mg

Now, the force due to the friction is defined as:

f=\mu N=\mu mg

where \mu is the coefficient of friction, \mu =0.5

So, for the crate to move, the force applied must be equal to the frictional force:

F=f\\F=\mu mg

And now that we know the force we can calculate the work:

W=F*d\\W=\mu mg*d

substituting known values:

W=(0.5)(46kg)(9.81m/s^2)(10.3)\\W=2324J

5 0
3 years ago
Read 2 more answers
The potential energy of an apple is 6.0 joules. The apple is 3m high. What is the mass of the apple?
zalisa [80]

Answer:

0.204 kg

Explanation:

6/(9.8*3)

6/29.4=0.204

9.8 represents gravity

5 0
3 years ago
Reaction _______ refers to the tendency of a reaction to occur without the application of outside force or energy to sustain the
babymother [125]
<span>spontaneity is the answer, hope this helps!!</span>
6 0
4 years ago
A car moves at a constant velocity of 30 m/s and has 3.6 × 105 J of kinetic energy. The driver applies the brakes and the car st
LekaFEV [45]

The force needed to the stop the car is -3.79 N.

Explanation:

The force required to stop the car should have equal magnitude as the force required to move the car but in opposite direction. This is in accordance with the Newton's third law of motion. Since, in the present problem, we know the kinetic energy and velocity of the moving car, we can determine the mass of the car from these two parameters.

So, here v = 30 m/s and k.E. = 3.6 × 10⁵ J, then mass will be

K.E = \frac{1}{2} * m*v^{2}  \\\\m = \frac{2*KE}{v^{2} } = \frac{2*3.6*10^{5} }{30*30}=800 kg

Now, we know that the work done by the brake to stop the car will be equal to the product of force to stop the car with the distance travelled by the car on applying the brake.Here it is said that the car travels 95 m after the brake has been applied. So with the help of work energy theorem,

Work done = Final kinetic energy - Initial kinetic energy

Work done = Force × Displacement

So, Force × Displacement = Final kinetic energy - Initial Kinetic energy.

Force * 95 = 0-3.6*10^{5}\\ \\Force =\frac{-3.6*10^{5} }{95}=-3.79 N

Thus, the force needed to the stop the car is -3.79 N.

5 0
3 years ago
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