Roland throws a 0.05kg egg with a velocity of 10 m/s to the right. The egg hits a wall and breaks. Which of the following is true?A. Momentum is not conserved because outside forces act on the systemB. The total momentum before the collision equals the total momentum after the collisionC. The momentum of the wall after the collision is 0.5kg m/s to the rightD. The momentum of the egg after the collision is 0.5kg m/s to the left

Plate tectonic theory is the movement of the plates or slabs of rigid rocks over the surface of the earth or the molten rocks that is the mantel.  

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Answer:

the units of work and energy is joule and unit of power is Watt

In a simple machine the direction changes by using the pulley. By applying the force on the pulley, by pushing down and the object moves up.

The simple machine allows to change the direction is a pulley. The pulley machine acts as a direction changer and is also used to change the direction of the force. When the wheel rotates, the cord can move in either direction.

The pulley has a wheel and hook. By attaching the hook to the cord, the wheel rotates making the object move up or down much easier when the force is applied to the pulley. These machines use pivot points to balance.

Hence, the simple machine called a pulley, is used to change the direction of force and makes the object moves up.

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Answer:

yes

Explanation:

yesim guessing that yes u still have

Answer:

Baroque Music:

Baroque music is another way to refer to Western classical music composed between approximately 1600 and 1750. Some of the most famous Baroque music composers included Bach, Handel, and Vivaldi.

pa follow at pa brainlest answer na den

Answer:

Synthesis Reaction

Explanation:

Answer:

If the size and direction of the forces acting on an object are exactly balanced, then there is no net force acting on the object and the object is said to be in equilibrium. Because the net force is equal to zero, the forces in Example 1 are acting in equilibrium.

Equilibrium of forces means that the net force is 0. It can either be when there is no force acting on the object or when the force acting on the object are balanced.

The radius of the orbit if the same nucleus is accelerated through a potential difference of 30 kV is 17.3cm

Given potential difference of nucleus (V1) = 10kV

radius of circle (r1) = 10cm

potential difference (V2) = 30kV

radius of orbit = r2

for lithium there are 3 protons and 4 neutrons

so charge (q) =+3e = 3x1.6x10-27 = 4.2x10-19C

magnetic field (B) =0.5T

So the charge carried by the nucleus is equal to three times the charge carried by a single particle. It is the potential which is used to accelerate this nucleus. The nucleus enters into the magnetic field after moving a distance of 20cm before entering. The charged particle enters into a magnet as:

r^2 = mV/Bq where B is the magnetic field

The energy gained by the charge particle  (E) = qV

r = √mV/Bq

mass of lithium is equal to 7.02 x 10-27kg

r = √7.02 x 10-27 x 30 x 10^3/0.5x4.2x10-19 = 17.3cm

Hence the radius of the orbit = 17.3cm

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Usually, we use sampling when a population is hard to study, for some reason.

Sampling is a technique commonly employed in research and statistics when it is impractical or impossible to study an entire population directly. It involves selecting a subset, or sample, from the population and using the information gathered from the sample to make inferences about the entire population. This is done with the assumption that the sample is representative of the population and that the findings from the sample can be generalized to the larger population.

There are several reasons why a population might be difficult to study comprehensively. One reason is the size of the population. For example, if the population of interest is the entire world or a country, it would be practically impossible to study each individual in the population due to logistical constraints and limited resources. In such cases, sampling allows researchers to gather information from a smaller, manageable subset of the population.

Another reason for using sampling is when the population is dispersed or geographically scattered. If the population is spread out across a wide area, it can be challenging and costly to reach and collect data from every individual. Sampling allows researchers to select representative individuals or clusters from different regions, making data collection more feasible.

Additionally, there are cases where the population is inaccessible or hard to reach due to privacy concerns or ethical considerations. For example, if the population consists of individuals with certain medical conditions or sensitive personal information, it may be challenging to obtain consent or access to the entire population. In such cases, researchers can use sampling methods to obtain data from a subset of individuals who are willing to participate and meet the necessary criteria.

In summary, sampling is a valuable tool when studying populations that are hard to access, too large, or dispersed. It allows researchers to gather relevant data from a representative subset of the population and make valid inferences about the larger population, despite the challenges posed by studying the population as a whole.

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The question probable may be:

Usually, we use                  when a population is hard to study, for some reason.

Answer:

Plankton is the correct answer I think

Answer: The egg will get sucked into the bottle. To get the egg out of the bottle, turn the bottle upside down and blow into it, so that the egg acts as a one-way valve. The increased air pressure in the bottle will cause the egg to pop back out.

Explanation:

Quickly place the egg over the mouth of the bottle. The egg will get sucked into the bottle. To get the egg out of the bottle, turn the bottle upside down and blow into it, so that the egg acts as a one-way valve. The increased air pressure in the bottle will cause the egg to pop back out.

The average speed of the baseball is  option  a. 40 m/s .

To calculate the average speed of the baseball, we use the formula:

Average Speed = Distance / Time

Given:

Distance = 18.4 m

Time = 0.46 s

Plugging in the values, we have:

Average Speed = 18.4 m / 0.46 s = 40 m/s

Therefore, the average speed of the baseball is 40 m/s.

Option a, 40 m/s, is the correct answer. This means that the baseball traveled an average distance of 40 meters per second from the pitcher's mound to home plate.

Average speed is a scalar quantity that represents the total distance traveled divided by the total time taken. It gives us an idea of how fast an object is moving on average over a given distance.

In this case, the baseball covered a distance of 18.4 meters in a time of 0.46 seconds. Dividing the distance by the time gives us the average speed of 40 m/s.

It's important to note that average speed is a measure of the overall rate of motion and does not provide information about the direction of motion. Therefore, negative values such as option b (-40 m/s) or extremely small values such as option c (0.03 m/s) are not appropriate in this context.

Option d (8.5 m/s) is also incorrect as it does not match the calculated average speed of 40 m/s.

Therefore, the correct answer is option a, 40 m/s, as it accurately represents the average speed of the baseball.

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Answer:

PE = 137.2931 J

Explanation:

PE = 137.2931 J

There is more to the Earth than what we can see on the surface. In fact, if you were able to hold the Earth in your hand and slice it in half, you'd see that it has multiple layers. But of course, the interior of our world continues to hold some mysteries for us. Even as we intrepidly explore other worlds and deploy satellites into orbit, the inner recesses of our planet remains off limit from us.

However, advances in seismology have allowed us to learn a great deal about the Earth and the many layers that make it up. Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core. Let's take a look at them and see what they have going on.

Like all terrestrial planets, the Earth's interior is differentiated. This means that its internal structure consists of layers, arranged like the skin of an onion. Peel back one, and you find another, distinguished from the last by its chemical and geological properties, as well as vast differences in temperature and pressure.

Explanation:

B) A pendulum is a mass suspended on the bottom of a string.

A pendulum is a simple mechanical device that consists of a mass (known as the bob) suspended from a fixed point by a string, wire, or rod. When the bob is pulled to one side and released, it swings back and forth under the influence of gravity, forming a regular pattern of motion. The time it takes for the pendulum to complete one full swing (i.e., from one extreme position to the other and back again) is known as its period. The period of a pendulum is affected by the length of the string and the strength of gravity. The longer the string, the longer the period, and the stronger the gravity, the shorter the period.Pendulums have a wide range of practical applications, such as timekeeping, as seen in grandfather clocks. They are also used in scientific experiments to measure time intervals and gravitational acceleration.

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This question is incomplete, the complete question is;

The entropy of an ?-ideal gas changes in the following way as a function of temperature and volume:

ΔS = nRln(V\(_f\)/V\(_i\)) + ∝nRln(T\(_f\)/T\(_i\))

For an adiabatic process, the change in T is determined by the change in V. In this problem you will compute the contributions to S from the V and T terms separately, then add them up to find the total entropy change for an adiabatic process.

Argon gas, initially at pressure 100 kPa and temperature 300 K, is allowed to expand adiabatically from 0.01 m³ to 0.026 m³ while doing work on a piston.

1) What is the change in entropy due to the volume change alone, ignoring any effects of changing internal energy? ΔS = ? J/K

2) For this adiabatic expansion, what is the final temperature?  T\(_f\) =  ? K

Answer:

1) the change in entropy due to the volume change alone, ignoring any effects of changing internal energy is 3.185 J/K.

2) the final temperature is 158.66 K

Explanation:

Given the data in the question;

ΔS = nRln(V\(_f\)/V\(_i\)) + ∝nRln(T\(_f\)/T\(_i\))

P\(_i\) = 100 kPa = 100000 Pa

V\(_i\) = 0.01 m³

V\(_f\) = 0.026 m³

T\(_i\) = 300 K

1)  the change in entropy due to the volume change alone

from the question; ΔS = nRln(V\(_f\)/V\(_i\)) + ∝nRln(T\(_f\)/T\(_i\))

so change in entropy due to the volume change alone is;

ΔS = nRln(V\(_f\)/V\(_i\))

we know that, from ideal gas law; PV = nRT

so, nR = P\(_i\)V\(_i\)/T\(_i\)  ---- let this be equation 1

∴ ΔS = P\(_i\)V\(_i\)/T\(_i\) × ln(V\(_f\)/V\(_i\))

we substitute

ΔS = [( 100000 Pa ×  0.01 m³) / 300 K ] × ln(0.026m³ / 0.01m³ )

ΔS = 3.185 J/K  

Therefore, the change in entropy due to the volume change alone, ignoring any effects of changing internal energy is 3.185 J/K.

2)  Final temperature

we know that, in an adiabatic expansion;

\(PV^Y\) = K

where Y = 5/3

so

\(P_i\)\(V_i^{(5/3)\) = \(P_f\)\(V_f^{(5/3)\)

\(P_f\) = \(P_i\)\(( \frac{V_i}{V_f})^{(5/3)\)

we substitute

\(P_f\) = ( 100000 Pa) \(( \frac{0.01 m^3}{0.026 m^3})^{(5/3)\)

\(P_f\) = 20341.255 Pa

Also from ideal gas law;

PV = nRT

T = PV / nR

so

T\(_f\) = P\(_f\)V\(_f\) / nR

but from equation 1; nR = PV/T

so

T\(_f\) = (P\(_f\)V\(_f\)) / (P\(_i\)V\(_i\)/T\(_i\) )

T\(_f\) = ( P\(_f\)V\(_f\)T\(_i\) / P\(_i\)V\(_i\) )

we substitute

T\(_f\) = ( 20341.255 Pa × 0.026 m³ ×  300 K) / 100000 Pa × 0.01 m³ )

T\(_f\) = 158.66 K

Therefore, the final temperature is 158.66 K

Answer:

A graduated cylinder measures in units of volume, usually in units of milliliters.

An example od division is

69/3

Firstly, we would divide 6 by 3, we would get 2

Also, we would divide 9 by 3, we would get 3

By placing 2 and 3 together, we would get 23

Thus,

69/3 = 23

Another example is

230/2

The first step is to divide 23 by 2. We would get 11 remainder 1. We would place the remainder, 1 in front of 0 so that it becomes 10. 10 divide 2 is 5. By placing 11 and 5 together, we would get 115

Thus,

230/2 = 115

Answer:

un café y a seguir pensando porque no se la respuesta xd

Answer:

Wavelength

Explanation:

Answer:

The correct answer is B. Energy cannot be created or destroyed.

The law of conservation of energy states that energy cannot be created or destroyed, but it can be transformed from one form to another. This means that in any physical process, the total amount of energy in a system remains constant. Energy can be converted from one form to another, such as from kinetic energy to potential energy or from electrical energy to light energy, but the total amount of energy in the system remains the same.

Answer:

 Good Diet: ! gallon of water a day, Fruits, Vegetables, White meats(Chicken), Don't eat past 3 PM.

Bad Diet: Pizza, Red meat, Baked goods, Eating at late hours.

Explanation: I know the difference because, When you drink water first thing in the morning it gets your metabolism running. Than means you can digest foods better, you want to feed your body good foods but you should not eat until you feel stuffed. You should eat until you are no longer starving. Than you should drink a cup of water in between meals. I know you should not eat past 3 pm because your body needs time to digest foods because you should never go to sleep with a full stomach. I know the difference between good food and bad food because when you eat healthy food and a balanced diet, your body will have more energy and you wont feel tired afterwards. Eating bad foods and food with artificial sugars will clump up in your kidneys, and your body will have small bursts of energy but you will feel lazy afterwards...Your body is supposed to stay energized from a healthy meal in order to give you the energy your body needs to exercise. If you feel droopy all the time and you don't want to do anything, than you are unhealthy.

Answer:

A vegetarian diet is an example of a good fad diet if you do it correctly. It can help you get lots of veggies and good nutrients from them while still following the non-meat diet you want. This can be effective and good for weight loss becasue you are still eating and getting all the good nutrients and calories from less fatty foods. 

Vegan diet (some can be successful but many people fail and do not do good that is why I choose this) The problem with this fad diet is that it can cause nutritional deficiencies and lead to a host of additional health problems, including negatively impacting hormonal health and metabolism. Many people also struggle to find healthy vegan food and end up eating bad and fatty foods instead. 

Explanation:

Got a 100

Answer: A flower pot falling

Explanation:

The car on the curve (its direction is changing) and the falling flower pot (its speed is changing) are both undergoing acceleration.

These waves are traveling at the same speed.  The wave with the highest frequency is option C, "A wave frequency with line crossing in the middle."

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If a ray of light travels from air into a liquid, as shown in figure below. The ray is incident upon the liquid at an angle of 30.0°. The angle of refraction is 22°, and the refractive index of the liquid would be 1.334.

It is the phenomenon of bending of light when it travels from one medium to another medium. The bending towards or away from the normal depends upon the medium of travel as well as the refractive index of the material.

By using Snell's law,

Refractive index of the liquid = sin(i) /sin(r)

                                                =sin(30) /sin(22)

                                                = 1.334

Thus, the refractive index of the liquid would be 1.334.

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Answer: B)

X: Attractive and repulsive

Y: Very small range

Z: Always attractive

I just took the test :)

Answer:

its B:)

Explanation:

The best, most helpful observation you can make is to LOOK steadily and squarely at the PICTURE of the stack.

For some nefarious reason, you decided to prevent us from doing that.

Answer:

Light wave-particle duality simply that the light has both the characteristics of fluctuations, but also has the characteristics of particles. Scientists have found that light can propagate forward like a wave, and sometimes show the characteristics of particles. Therefore, so we call light has “wave-particle duality”.

Explanation: