In which beaker was the average kinetic energy of the particles the greatest?

Answer:

The acceleration of the block is 1.21 m/s².

Explanation:

Given that,

Mass = 2.0 kg

Force = 25.0 n

Angle = 30°

Coefficient of friction = 0.752

We need to calculate the acceleration of the block

Using balance equation

[tex]F-(mg\sin\theta+\mu mg\cos\theta)=ma[/tex]

Put the value into the formula

[tex]25-(2.0\times9.8\sin30+0.752\times2.0\times9.8\cos30)=2.0a[/tex]

[tex]a=\dfrac{25-(2.0\times9.8\sin30+0.752\times2.0\times9.8\cos30)}{2.0}[/tex]

[tex]a=1.21\ m/s^{2}[/tex]

Hence, The acceleration of the block is 1.21 m/s².

Answer:

70 m.

Explanation:

Given,

Frequency, f = 20 HZ

speed of sound, v = 1400 m/s

wavelength of the waves = ?

we know,

v = f λ

Hence, the wavelength of the wave is equal to 70 m.

Answer:

3

Explanation:

1-3 age is hard to remember

Participating in physical activity can help to reduce stress in all of the following ways except it causes fatigue and exhaustion. Option b is correct.

Anybody movement requiring energy expenditure that is produced by skeletal muscles is defined as physical activity. Physical exercise encompasses all forms of movement,

Whether it is done for fun, to go to and from locations, or as part of one's job. Physical activity, both moderate and strenuous, is beneficial to one's health.

Physical activity is good for your heart, body, and mind. Physical exercise aids in the prevention and treatment of noncommunicable illnesses including heart disease, cancer, and diabetes.

Depression and anxiety symptoms are alleviated by physical activity. Physical activity improves one's ability to think, learn, and judge.

Participating in physical activity can help to reduce stress in all of the following ways except it causes fatigue and exhaustion.

Hence option b is correct.

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Answer:

b

Explanation:

did on edge

Answer:

Which questions do you need help on?

Answer:

his feet feel warmer because of friction. when friction takes place then an object will warm up because friction is a universal law that always takes place. if you rub your hands together, you also experience the heat of frictional I hope that helped.

Answer:for ever reaction there is an equal and opposite reaction

Explanation:

Answer:

, when you jump high, your legs apply a force to the ground.

Explanation:

We can see the image in most detail that having 400x magnification as compared to 100x.

Magnification is the process in which the size of an object is enlarging but not physical size of something. Those instruments having high magnification power can shows us the image larger and due to which we can see that image clearly.

So we can conclude that we can see the image in most detail that having 400x magnification.

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Answer:

the answer is B 20 ms/s

Explanation:

N/A

Thus the for the given velocity versus time graph the average acceleration of the object during segment B is 0 m/s/s.Hence, option A is the correct option.

Average acceleration- Acceleration is defined as the rate of change of acceleration. Average acceleration for an interval can be defined as the rate of change of velocity for that interval per time.

Let [tex]\Delta v[/tex] be the change in velocity and [tex]\Delta t[/tex] be the change in time in a given time interval. Then average acceleration is,

[tex]a= \dfrac{\Delta v}{\Delta t}[/tex]

At segment B, It starts at 4.5 seconds and ends at 10 seconds. The total time interval for this segment is 5.5 seconds.Therefore,

[tex]\Delta t=5.5[/tex]

Now the change in velocity for segment B. In segment B the velocity does not change at any point and keeps the value of 20 m/sec at the time interval.

According to the definition of the average acceleration when an object is changing its velocity (whether by a constant amount or a varying amount) then it is an accelerating object. And an object with a constant velocity is not accelerating.

Thus the for the given velocity versus time graph the average acceleration of the object during segment B is 0 m/s/s.Hence, option A is the correct option.

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Answer:

Work done = 9 x 10⁴ J

Explanation:

Given :-

Power = 500 Watts

Time Taken = 180 seconds

To Find :-

Work Done

Formula to be used :-

Power = Work Done / Time Taken

Work Done = Power x Time Taken

Inputting the values :-

= 500 W x 180 seconds

= 90,000 J

= 9 x 10⁴ J

Answer:

54 [tex]\frac{m}{s}[/tex]

Explanation:

[tex]v=u+at[/tex]

where [tex]u=[/tex]initial velocity

[tex]v=0+(10\frac{m}{s^{2} } )[/tex]×[tex](5.4s)[/tex]

[tex]v=54\frac{m}{s}[/tex]

Answer:

when there is no resistance.( in a vacuum)

Explanation:

this is because of acceleration due to gravity that is equal on both objects.

The closer light source will appear brighter. In other words the closer the stars are the brighter they will be. Also The darker the sky is the more you will see the stars.

Answer:

D:Introspection

Explanation:

Answer:

D

Explanation:

took the test got it right

Explanation:

The electric field is normal to any conductor charged surface, then any negatively charged sharp end will concentrate the electrons in order to achieve that (being rejected by the others on main body), that also implies a huge voltage drop nearby the edge, meaning high electric field in the direction aimed by the sharp end, that field becomes strong enough (when charged by electrostatic machines) to propel electrons out causing air movement in that direction (a flame will bend because of that wind).

Ion wind, ionic wind, coronal wind or electric wind is the airflow induced by electrostatic forces linked to corona discharge arising at the tips of some sharp conductors (such as points or blades) subjected to high voltage relative to ground. Ion wind is an electrohydrodynamic phenomenon

Hi, by the ways happy Halloween , I hope this really helps

Answer:

A

Explanation:

Because plants cant move and animals can.

The characteristic which describes an organism of kingdom Animalia is able to move on its own when compared to the plants kingdom. Thus, the correct option is A.

Animals are the multicellular, eukaryotic organisms in the biological kingdom Animalia. Animals are the organisms which consume organic material, breathe oxygen gas, are able to move on their own, can reproduce sexually and produce organisms which contain genetic information which is recombination of both the parents, and these organisms go through an ontogenetic stage in which their body consists of a hollow sphere of the cells, the blastula, during the embryonic development of organisms.

Organisms belong to Animal kingdom show some characteristics which are not found in the organisms which belong to the plant kingdom including movement. Animals can move on their own while plants cannot.

Therefore, the correct option is A.

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Answer:

20cm

Explanation:

2 × 5 × 2 = 20

Hope this helps.

The resistance of the thermometer at the given temperature is 15.58 ohms.

The resistance of the thermometer can be determined by applying method of interpolation as shown below;

[tex]\frac{R_\theta - R_0}{R_{100} - R_0} = \frac{\theta -0}{100 - 0}[/tex]

where;

[tex]\\\\\frac{R_\theta - 14.5}{18.5 - 14.5} = \frac{27}{100} \\\\\frac{R_\theta - 14.5}{4} = \frac{27}{100}\\\\100R_\theta - 1450 = 108\\\\100R_\theta = 1558\\\\R_\theta = 15.58 \ ohms[/tex]

Thus, the resistance of the thermometer at the given temperature is 15.58 ohms.

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Explanation:

Edothermic process is the absorbtion of heat.

It is the opposite of exothermic process which is the release of energy. In edothermic process thermal energy is absorbed from the surrounding

Answer:

22500 Ns

Explanation:

Given,

Mass ( m ) = 1500 kg

Velocity ( v ) = 15 m/s

Formula : -

Impulse = mv

Impulse

= 1500 x 15

= 22500 Ns

Therefore,

22500 Ns is the impulse experienced by the car.

Note : -

Ns is the unit of impulse.

Hello!

Answer:

The answer is D

Wish you luck!

The actual mechanical advantage, the velocity ratio, and the length of the slope if the height of the slope is mathematically given as

Question Parameters:

A block of weight 5000 N is pushed up a slope by a force of 250 N.

Generally, the equation for the actual mechanical advantage  is mathematically given as

A=Fout/Fin

A=5000/250

A=20

b)

the velocity ratio is given by the distance moved by the effort divided by the distance moved by the load

Therefore

VR=250/5000

VR=0.05

c)

the length of the slope if the height of the slope is 10 m

Assume the slope is at an angle of 30

Hence

sin 30=10/x

x=20m

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Answer:

A) as you know AMA is equal to VR so the solution is 5000N/250N which is equal to 0.05with no units

The people in the music industry still prefer analog music storage. Because analog devices record the music in its original form.

There are advantages to both digital and analog music. Even today, music connoisseurs debate the subject incessantly.

Understanding both recording methods can help you appreciate music more by providing you with a better understanding of playback depth. Analog and digital songs have different effects on playback,

But both can identify the various aspects of a song. In honor of music as a whole, we're diving into both and bringing out the best of each.

Hence people in the music industry still prefer analog music storage. Because analog devices record the music in its original form.

To learn more about analog device storage refer to the link;

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Answer:

B

Explanation:

The following are the several approaches to produce a current in a coil:

An electric current is induced in a coil when it is rapidly moved between the two poles of a horseshoe magnet.

An electric current is induced when a magnet is shifted relative to a coil.

The current in the coil may be generated by keeping it fixed and rotating a magnet within it.

A steady alteration of the current in 'another coil' kept near it in a coil might create the current...

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