a ball bounces off the floor. if the ball and ground collision is not perfectly elastic, then the total linear momentum of the ball ground before and after the collision

Paul has a very small budget, but he want to do some business job. The channel he could try in his situation is C. Flea Market.

Flea Market is a market where multiple vendors gather to sell their products. Many flea markets offer both new or secondhand goods. Though open-air markets were once the norm, today's flea markets may take place indoors, outdoors, or both. Many people with low budget and want a simple way of selling their goods use this kind of market. They don't need to rent such a permanent place. They also do not need to share their profit from sales to service providers like if they did it in E-commerce.

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Answer:

During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.

Explanation:

In nuclear fission the nucleus of an atom breaks up into two lighter nuclei. The process may take place spontaneously in some cases or may be induced by the excitation of the nucleus with a variety of particles (e.g., neutrons, protons, deuterons, or alpha particles) or with electromagnetic radiation in the form of gamma rays. In the fission process, a large quantity of energy is released, radioactive products are formed, and several neutrons are emitted. These neutrons can induce fission in a nearby nucleus of fissionable material and release more neutrons that can repeat the sequence, causing a chain reaction in which a large number of nuclei undergo fission and an enormous amount of energy is released. If controlled in a nuclear reactor, such a chain reaction can provide power for society’s benefit. If uncontrolled, as in the case of the so-called atomic bomb, it can lead to an explosion of awesome destructive force.

Answer:

In nuclear fission, atoms are split apart, which releases energy. All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation.

Answer:

The board did exert an equal and opposite force, but your mass is considerably greater than the mass of the board so all the friction between you and the ground keeps you from accelerating.

If you punched the board while standing on perfectly slippery ice, or in a vacuum, you would accelerate also, but at a much smaller rate than the board due to the mass difference.

If you could ignore all losses (friction, the board breaking, etc.) then all Newton's 3rd Law really is saying is that the center of mass of the system doesn't change when you punch the board. So the board accelerates in the direction of your punch and you move away from it at rates that keep the system center of mass constant.

Explanation:

Answer:

37.1°

Explanation:

The three product which can be potentially fail considering Load Strength graph and precautionary measure to prevent failure are as below;

Ball Pen:

1. Ink Leakage: One potential failure of a ball pen is ink leakage. This can occur due to poor sealing between the ink reservoir and the ballpoint mechanism. Ink leakage can result in messy hands, stained documents, and reduced functionality of the pen. To prevent this failure, manufacturers can improve the quality control process to ensure proper sealing and use high-quality materials for the pen's components.

2. Ballpoint Jamming: Another failure is ballpoint jamming, where the ball gets stuck and prevents smooth writing. This can be caused by a buildup of dried ink or debris inside the pen's mechanism. To prevent ballpoint jamming, regular cleaning and maintenance of the pen can be recommended. Additionally, manufacturers can design the pen with features that facilitate easy cleaning or provide instructions on how to clear any blockages.

3. Weak Barrel Construction: The barrel of the pen may also be prone to failure if it is weak or brittle. Excessive pressure or rough handling can lead to cracks or breakage, rendering the pen unusable. To prevent this, manufacturers can use durable materials for the pen barrel, such as sturdy plastics or reinforced metal, and perform quality checks to ensure structural integrity.

Room Key:

1. Keycard Malfunction: A potential failure of a room key is a malfunction in its electronic components. This can result in the keycard being unreadable by the door lock system, preventing access to the room. To prevent this failure, regular maintenance and replacement of keycard readers can be implemented. Additionally, guests should be advised to keep their keycards away from magnets and electronic devices that can interfere with the card's functionality.

2. Magnetic Strip Damage: Another failure can occur if the magnetic strip on the keycard gets damaged or demagnetized. This can happen due to exposure to magnetic fields or physical damage. To prevent this failure, keycards can be made more durable with protective coatings or alternative technologies such as RFID. Guests should also be educated on proper handling and storage of keycards to avoid damage.

3. Battery Drain: Some room keys use batteries to power their electronic components. A failure can occur if the battery drains, leading to an inactive keycard. To prevent this, low-power consumption designs can be implemented, and regular battery checks or replacements can be carried out by hotel staff. Guests should be informed about the importance of returning the keycard to the front desk for recycling or proper disposal to ensure the battery is replaced as needed.

Blender:

1. Motor Burnout: One potential failure of a blender is motor burnout due to prolonged use or overloading. Continuous operation at high speeds or attempting to blend hard or frozen ingredients beyond the blender's capacity can cause the motor to overheat and fail. To prevent motor burnout, manufacturers can provide clear guidelines on the maximum load capacity and recommended usage durations. Automatic thermal protection mechanisms can also be incorporated to shut off the blender if it detects excessive heat.

2. Blade Jamming: Another failure can occur if food particles or ingredients get jammed between the blender's blades, preventing them from spinning freely. This can happen if the blender is not properly cleaned or if ingredients are not adequately prepared before blending. To prevent blade jamming, users should be advised to clean the blender thoroughly after each use and ensure that ingredients are cut into manageable sizes. Manufacturers can also design blades with accessible mechanisms for easy cleaning or provide cleaning tools.

3. Leakage: A failure in a blender can also manifest as leakage. This can happen if the blender jar or its sealing components are damaged or improperly assembled. Liquid or food can leak out during blending, resulting in a messy and potentially unsafe situation. To prevent leakage, manufacturers should ensure proper sealing mechanisms and use high-quality materials for the blender jar and lid. Regular inspection of the sealing components can be advised,

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Answer:

Density = 1027.3 [kg/m3]

Explanation:

To solve this problem we must use the concept of density which is defined as the relationship between mass and volume, which can be determined by the following equation.

density = m/v

m = mass = 308.19 [gramm] = 0.30819 [kg]

v = volume = 300 [mL] = 0.3 [Lt] = 0.0003 [m3]

density = (0.30819/0.0003)

density = 1027.3 [kg/m3]

Answer:

Electrical energy

Explanation:

Hope It helps you

Answer:

hhmmmmmhmmmm hmhmmmm hmmm yeah i got nothing

Explanation:

The work you must do to push the block across the table is 44.1 J and power output while pushing the block is 14.7 W.

To calculate the work done, we first need to find the force required to overcome the friction between the steel block and the table. Since the block is moving at a steady speed, the force you apply is equal to the frictional force. We can use the formula:
Force = friction_coefficient * mass * gravity
For steel on steel, the friction_coefficient is approximately 0.15.

The mass is 10 kg,

and gravity is approximately 9.8 m/s².

Therefore:
Force = 0.15 * 10 * 9.8

= 14.7 N
Next, we need to find the distance the block has traveled in 3.0 seconds. Since the block is moving at a constant speed of 1.0 m/s, we can use the formula:
Distance = speed * time = 1.0 m/s * 3.0 s = 3.0 m
Now we can calculate the work done:
Work = Force * Distance = 14.7 N * 3.0 m = 44.1 J (joules)
So, the work you must do to push the block across the table is 44.1 J.

To calculate your power output, we can use the formula:
Power = Work / Time

= 44.1 J / 3.0 s

= 14.7 W (watts)
Your power output while pushing the block is 14.7 W.

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The crate moves with velocity vecv in the positive X-direction, as shown in the FBD above. Forces acting upon that crates are A 65 kilogramme crate is being kept from sliding to across warehouse floor by a force pf 250 N.

Writing equal forces in their component parts using Newton's second law

0 for Sigma F x.

0 Rightarrow F-F friction

----(1) \s\

0 for Sigma F y.

-mg=0 rightarrow

——(2)

Equation (1) yields F friction=F.

Rightarrow ___k=F ___k

Rightarrow mu _k=frac F N

Rightarrow mu k=frac fmg

——-from Equation (2)

Rightarrow _k=frac 250*65*9.8=0.39

fr = Fr/N

The resistive frictional force (Fr) divided more by normal of perpendicular energy (N) pushing adjacent objects together yields the friction coefficient (fr), which is a numerical value. Equation fr = Fr/N serves as a representation of it.

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The crate moves with velocity vecv in the positive X-direction, as shown in the FBD above. Forces acting upon that crates are A 65 kilogramme crate is being kept from sliding to across warehouse floor by a force pf 250 N.

0 for Sigma F x.

0 Rightarrow F-F friction

----(1) \s\

0 for Sigma F y.

-mg=0 rightarrow

——(2)

Equation (1) yields F friction=F.

Rightarrow ___k=F ___k

Rightarrow mu _k=frac F N

Rightarrow mu k=frac fmg

——-from Equation (2)

Rightarrow _k=frac 250*65*9.8=0.39

fr = Fr/N

The resistive frictional force (Fr) divided more by normal of perpendicular energy (N) pushing adjacent objects together yields the friction coefficient (fr), which is a numerical value. Equation fr = Fr/N serves as a representation of it.

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The correct option for maximizing contrast is 70 kV and 15 mAs. A film with maximum contrast requires a new technique that involves the reduction of kV and mAs parameters. The new technique should be 70 kV and 15 mAs.

Radiography is a technique that enables the creation of medical images of the human body, using an X-ray beam. X-rays are an example of ionizing radiation, and their interaction with the tissues in the body results in the formation of an image. Contrast is the difference in tone between adjacent areas in the image, and it is essential to obtain high contrast in radiography, to ensure the visualization of the structures of interest and to make it possible to detect abnormalities.

Maximizing contrast is a common technique used in radiography, and it involves the adjustment of parameters such as kV, mAs, and exposure time. A high-contrast image can be achieved by reducing kV and mAs and increasing exposure time. The kV and mAs settings are the most important variables to adjust to enhance contrast. A high-kV setting will result in a low-contrast image, while a low-kV setting will produce a high-contrast image.In the given scenario, the original technique is 80 kV and 20 mAs, and all other factors are equal. To enhance the contrast, the new technique should be a combination of reduced kV and mAs. The possible options for a new technique are:

70 kV and 15 mAs70 kV and 30 mAs80 kV and 15 mAs60 kV and 60 mAs

The best option for maximizing contrast is the first option, which is 70 kV and 15 mAs. This is because the kV value has been reduced by 10, and the mAs has been reduced by 5, which will result in an increase in contrast.

The new technique to enhance contrast requires a reduction in kV and m As parameters, and the best option for maximizing contrast is 70 kV and 15 mAs.

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Answer:

From Dr. Stephen Warren, University of Washington (8/22/2007): The world record for low temperature was set at Vostok Station, Antarctica, on 21 July 1983. Cerveny et al. (2007) give this temperature as -89.4°C in their Table 2, quoting Krause and Flood (1997), who gave the same value.

(Hope this answered your question!)

Answer:

002 bc eause iy is

The statement that is true about an orbit with an eccentricity of almost 1 is:

C) The orbit is a very long and narrow ellipse.

The eccentricity of an orbit is a measure of how elongated or stretched out the shape of the orbit is. The eccentricity of an orbit ranges from 0 to 1, with 0 representing a perfectly circular orbit and 1 representing a highly elongated or eccentric orbit.

When the eccentricity is almost 1, it indicates that the orbit is highly elongated or stretched out. This means that the orbit is no longer close to being circular but takes on the form of a long and narrow ellipse. The closer the eccentricity is to 1, the more elongated the orbit becomes. Therefore, option C, stating that the orbit is a very long and narrow ellipse, is the correct statement for an orbit with an eccentricity of almost 1.

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Newton's first law, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

It implies that any object, either stationary or in motion, would remain as it is, unless an external force acts on it. When an external force is applied, it results in a change in motion in terms of direction, speed, or both. This is a statement that describes Newton's first law of motion.Basically, Newton's First Law of Motion states that a body at rest remains at rest and a body in motion maintains uniform motion in a straight line, unless acted upon by an external force.

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The radius at which the needle is in contact moves with a velocity of 0.93 m/s and the time taken  0.69 seconds is 0.102 meters.

Speed is a unit used to describe how quickly an object is moving. The fact that speed is a scalar denotes that it is a measurement with a magnitude but no direction.

A thing that moves swiftly and quickly, moving a great distance in a short period of time. On the other hand, an object moving slowly and moving at a low speed travels a relatively short distance in the same amount of time. Nothing moves at all when an object has no speed.

Given:

The time, t = 0.69 seconds,

The speed, s = 0.93 m/s,

Calculate the distance covered by the needle,

d = \(s*t\)

Substitute the values,

d = 0.93 * 0.69

d = 0.6417 meters,

The total distance covered by the needle is equal to the circumference of the record, so,

d = 2\(\pi \\\)r

r = 0.6417/ 2*3.14

r = 0.102 meters

Therefore, the radius at which the needle is in contact moving with a velocity of 0.93 m/s and time taken  0.69 seconds is 0.102 meters.

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The complete Que is

It takes a time t = 0.69 s for a record to revolve on a record player once. A particular point on the record moves past the needle at a speed of vn = 0.93 m/s. What is the radius at which the needle is in contact with the record?

Voyager 2 passed closer to the southern magnetic pole of Uranus.

During its flyby of Uranus in 1986. This was determined by the measurements taken by the spacecraft's instruments, which detected the magnetic field of Uranus and allowed scientists to map its magnetic structure.

The spacecraft's trajectory and the data collected indicated that Voyager 2 passed nearer to the southern magnetic pole than the northern one. This encounter provided valuable insights into the magnetic field and overall magnetosphere of Uranus, contributing to our understanding of the planet's unique characteristics and the dynamics of its magnetic environment.

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The wavelength of the fundamental tone in this case is 10.00M

What is Wavelength?

Wavelength is a physical quantity that measures the distance between two consecutive points in a wave that are in phase, that is, that have the same degree of oscillation or displacement from their rest position. It is usually represented by the symbol λ (lambda) and is expressed in units of distance, such as meters, centimeters, or nanometers, depending on the scale of the wave being considered. In general, the wavelength of a wave is inversely proportional to its frequency, with longer wavelengths corresponding to lower frequencies and shorter wavelengths corresponding to higher frequencies.

The fundamental tone of an organ pipe that is open at one end and closed at the other has a wavelength that is four times the length of the pipe. Therefore, the wavelength of the fundamental tone in this case is:

λ = 4L = 4(2.50 m) = 10.00 m

where L is the length of the pipe.

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The chemical formula for dinitrogen tetroxide is C) N204.

Nitrogen that exists in its diatomic form, which is also known as molecular nitrogen or nitrogen gas, is referred to as dinitrogen. This form of nitrogen has two nitrogen atoms joined by a triple covalent bond, which satisfies the Lewis electron rules by having two lone, nonbonding electron pairs, one on each Nitrogen atom.

Whereas Dinitrogen tetroxide is colourless, Nitrogen dioxide is brown. As the temperature drops, the brown color's intensity falls. As a result, a drop in temperature results in a rise in Dinitrogen tetroxide. As temperature drops, equilibrium is pushed to the Dinitrogen tetroxide side.

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Explanation:

Distance 250m, displacement 50m

Answer:

Time = 1.44 minutes

Explanation:

Given that the circumference of the wheel is 1250 m, which is the distance to be covered.

Thus,

speed =

distance = 1250 m, speed = 12 m/s.

So that;

12 =

time =

       = 104.16667

time = 104.17 s

But, 60 seconds = 1 minute

time = 1.4417

       = 1.44 minutes

The time required for one trip around the wheel is 1.44 minutes.

The example of the scientific practice is missing here but it should always involve the application of the scientific method.

The scientific method is a series of steps by which researchers can collect empirical evidence that enables them to test hypotheses and generate scientific theories.

The scientific method starts with the observation of a given phenomenon from the real world, which then enables the raising of a question that in turn enables the formulation of a plausible explanation called hypothesis.

In conclusion, the example of the scientific practice is missing here but it should always involve the application of the scientific method.

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Answer:

Tides and Water Levels

Explanation:

When the sun, moon, and Earth are in alignment (at the time of the new or full moon), the solar tide has an additive effect on the lunar tide, creating extra-high high tides, and very low, low tides—both commonly called spring tides

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Answer:

C. Potential Energy ...............

Answer: thermal energy

Explanation: hope this helps

Answer:

\(they \: are \: .....oil \: glands.... \: that \: secretes \: ...oil...\\thier \:function \: is \: in \:the \:secretion \: of \:sebum,\\ \: which \:contains \:fatty \: substances \)

Answer:A

Explanation:

A. Assume incompressible flow

Since volumtric flow rate will be same in both section

Q1 = Q2

A1*V1 = A2*V2

V2 = A1*V1/A2

V2 = 6.9*10^-4*288*10^-2/(3.3*10^-4)

V2 = 6.02 m/sec

B. using bernoulli's equation:

P1/rho + v1^2/2 + g*h1 = P2/rho + v2^2/2 + g*h2

Since pipes are horizontal

h1 = h2

P1/rho + v1^2/2 = P2/rho + v2^2/2

P2 = P1 + (v1^2 - v2^2)*rho/2

P2 = 1.5*10^5 + (2.88^2 - 6.02^2)*1100/2

P2 = 1.35*10^5 Pa

The rate of change in position of an object in any course. Speed is measured because the ratio of distance to the time wherein the distance became included. Speed is a scalar amount because it has handiest route and no significance.

Velocity can be notion of as the rate at which an object covers distance. A quick-moving object has a high speed and covers a notably big distance in a given amount of time, whilst a sluggish-shifting item covers a relatively small amount of distance in the same amount of time.

The primary unit or the S.I. unit of velocity is m/s or ms?¹.

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