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igor_vitrenko [27]
3 years ago
7

Bob has a cup of hot chili. It is too hot to eat.

Physics
2 answers:
Dafna11 [192]3 years ago
8 0

Answer:

WRONG OMG THE CORRECT ANSWER IS

Explanation:

It has increased the air's thermal energy.

STUDY ISLAND

Kazeer [188]3 years ago
7 0

Answer:

B.  It has increased the chili's potential energy

Explanation:

When there is an increase in the kinetic energy of a substance, the vibrations of atoms and molecules of the substance increases.

This kinetic energy increases the thermal energy of the substance.

So, when there is a decrease in the thermal energy of a substance, the kinetic energy decreases because the random motion of the molecules or atoms becomes feeble.

If the kinetic energy of the substance decreases, the potential energy of the substance increases.

So, if the chili has cooled after 10 minutes, it has increased the potential energy of the substance.

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I think is a high-pressure system because it is only in one particular area.
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4 years ago
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. A wave moves at a constant speed along a string. Which one of the following statements is false concerning the motion of parti
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Answer:

The particle speed is constant.

Explanation:

Particles in gases travel quickly in all directions, frequently clashing with each other and the container's edge. The particles gather kinetic energy and travel faster as the temperature rises. The true average speed of the particles is determined by their mass and temperature; larger particles travel more slower around the same temperature than lighter particles.

Thus, the false statement about a wave moving through a constant speed is that:

The particle speed is constant.

4 0
3 years ago
Two cars, one of mass 1100 kg, and the second of mass 2500 kg, are moving at right angles to each other when they collide and st
Pie

Answer:

v_{f}=17.47 m/s

Explanation:

Let's use the conservation of momentum to solve it.

p_{initial}= p_{final} (1)

  • The total initial momentum will be: m_{1}v_{1i}+m_{2}v_{2i}
  • The total final momentum will be: m_{1}v_{1f}+m_{2}v_{2f}, but as they stick together after the collision, v1f = v2f = vf.

So we can rewrite (1), using the above information:

m_{1}v_{1i}+m_{2}v_{2i}=m_{1}v_{f}+m_{2}v_{f}

m_{1}v_{1i}+m_{2}v_{2i}=v_{f}(m_{1}+m_{2})

v_{f}=\frac{m_{1}v_{1i}+m_{2}v_{2i}}{m_{1}+m_{2}}

v_{f}=\frac{1100\cdot 14+2500\cdot 19}{1100+2500}

Finally, the magnitude of the velocity of the wreckage of the two cars immediately after the collision is:

v_{f}=17.47 m/s

I hope it helps you!

5 0
3 years ago
With a bar magnet where are the lines of force closest together
attashe74 [19]
At the tip of either of the magnets poles
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3 years ago
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Using the formula d = rt, calculate the distance a car would travel at 80 mph for 2.5 hours.
hoa [83]

Using the formula,

d= v \times t

Here, d is distance, v is the velocity and t is time.

Given, v = 80 \ mile /hour and t = 2.5 \ hour.

Substituting these values in above formula, we get

d = 80 \ mile /hour \times 2.5 \ hour = 200 \ miles

Thus, the distance traveled by the car is 200 miles

8 0
3 years ago
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