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Diano4ka-milaya [45]
3 years ago
12

Help please!!!!!!!!!!!!!!!!!

Physics
2 answers:
mestny [16]3 years ago
8 0
The broth has a higher density than the fat.
luda_lava [24]3 years ago
7 0
Your answer is choice 2. The broth has a higher density than the fat.

It is choice 2. due to the fact that choice 1 and 4 talks about melting points which has nothing to do with an device that separates mixtures. It isn’t choice 3 because we don’t know about the particles. Therefore, choice two makes the most sense.

Hope this helped :D
~xo Melis
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1. A truck of mass 3120 kg is accelerated from rest to a speed of 22.1 m/s. How much work was done on the truck to achieve that
Goryan [66]

Answer:

.5(3120kg)(22.1m/s)^2 = 7.62x10^5 J

Explanation:

8 0
3 years ago
A train is moving along a track with constant speed v1 relative to the ground. A person on the train holds a ball of mass m and
scoundrel [369]

Answer:

(a)0.5m(2v1v2+v2^{2})\\(b)0.5m(v2^{2}-v1^{2})\\(c)0.5m(2v1v2+v2^{2})\\(d)0.5m(v2^{2}-v1^{2})

Explanation:

velocity of ball in train reference = v2

velocity of ball in earth reference = v1+v2

(a)

Kinetic energy is given by 0.5mv^{2} where m and v are the mass and velocity of object respectively.

Change in kinetic energy is given by subtracting initial kinetic energy from the final kinetic energy. In this case

Initial kinetic energy= 0.5mv1^{2}

Final kinetic energy= 0.5m (v1+v2)^{2}=0.5m(v1^{2}+2v1v2+v2^{2})

Change in kinetic energy=0.5m (v1+v2)^{2}-0.5mv1^{2}=0.5m((v1+v2)^{2})-v1^{2}=0.5m(2v1v2+v2^{2}

(b)

Change in velocity in train reference will be

Initial kinetic energy= 0.5mv1^{2}

Final kinetic energy= 0.5mv2^{2}

Change in kinetic energy=0.5m(v2^{2}-v1^{2})

(c)

Work done, W = change in kinetic energy=0.5m (v1+v2)^{2}-0.5mv1^{2}=0.5m((v1+v2)^{2})-v1^{2}=0.5m(2v1v2+v2^{2}

(d)

Work done, W = change in kinetic energy=0.5m(v2^{2}-v1^{2})

4 0
3 years ago
Compared to that of a plane on the ground, is Earth’s gravitational pull on a plane 7 miles above Earth approximately the same?
solniwko [45]
Yes. It's approximately the same, but not exactly.

The weight of an object 7 miles above the Earth's surface (the gravitational force on it) is about 0.35% less than it is down on the surface.
8 0
3 years ago
Read 2 more answers
Which is the best example of the law of conservation of energy?
Sonja [21]

Answer:

Water can produce electricity. Water falls from the sky, converting potential energy to kinetic energy.

Explanation:

6 0
3 years ago
Imagine a single charge creating an electric field. what is the relationship between electric field strength and the distance fr
olasank [31]

Answer:

b. inverse

Explanation:

E =  \frac{V}{d}  \\ d \: is \: the \: distance \\

8 0
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