Mass movement Choose one: A. depends on the difference between the downslope force and the resistance force. B. cannot happen under wet conditions. C. cannot happen underwater because the buoyancy force in water is too great. D. always happens when the slope of a hill is not as steep as its angle of repose.

All periodic motions are not circular bcox they aren't similar to each other as u know the motion repeats the periodic table and also repeats itself of the tym perform the motion of the periodic...

Answer:

t is usually seen that all circular motions are usually periodic

Explanation:

but all periodic motions are not circular

this can be proved by an example for example when vehicles runs in uniform speed of motion then its speed is called periodic motion

where is his speed might not be called circular motion

if my answer is correct please mark my answer as brainliest

Answer:

Here are the five main ways to reduce friction:

        Definition: A lubricant is a substance that forms a thin layer between

         the two surfaces in contact.  

Explanation:

Answer:

Make surfaces smooth by grinding.

Lubrication.

Streamlined body.

Reduce pressure or weight on the object.

Reduce contact between surfaces by electrostatic magnetic levitation etc.

Use rolling friction instead of sliding friction.

Use fluid friction instead of the dry friction.

Explanation:

Answer:

The distance travelled by car is 6km.

Explanation:

4km+2km=6km

Answer:

you sopose to use rats to testing to get your reaserch

Explanation:

Answer:

Series.

Explanation:

Current is the same in each device since there is only a single pathway for the charge to flow.

In this case the angle made by fringes is 0.5291

Explain in detail.

Tan θ = 15.7 x 10-3 / 1.7

         = 0.5291

The condition of Interference is

d sin θ 0.5291 = (1) 633NM

d = (1)633nm / sin 0.5291

   = 68.54 x 10-6 m

    = 69.54 um

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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:

C: it ignores parts of the method within an investigation

C. The girl has greater linear speed.

The merry-go-round is turning at a constant rate, which means the angular velocity (ω) of the girl and the boy is the same. However, since the girl is nearer to the outer edge of the merry-go-round, she has to travel a greater distance along the circumference of the circle than the boy does in the same amount of time. Therefore, the girl has a greater linear speed than the boy.

Linear speed, also known as tangential speed, is the rate at which an object travels along a straight line path. It is the magnitude of the velocity vector of an object in uniform circular motion.

The formula for linear speed is:

v = rω

where v is the linear speed, r is the radius of the circle, and ω (omega) is the angular velocity, or the rate at which the object is rotating.

Linear speed is measured in units of distance per unit time, such as meters per second (m/s) or kilometers per hour (km/h).

In the case of the merry-go-round, the girl, who is closer to the outer edge of the circle, travels a greater distance in the same amount of time than the boy, who is closer to the center. Therefore, the girl has a greater linear speed than the boy.

Linear speed is an important concept in physics, especially in the study of circular motion and the motion of rotating objects. It is also used in many practical applications, such as determining the speed of vehicles, machinery, and other moving objects.

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The magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction will be B = mu0 * j * \(a^{2}\) / (2r) .

The magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts. A magnetic field is a force field that is created by moving electric charges and magnetic dipoles and exerts a force on other nearby moving charges and magnetic dipoles.

\(\int\limits {Bdl} \,\) = mu0 * I net

B (2πr) = mu0 ( j A )

B (2πr)  = mu0 * j (π \(a^{2}\))

B = mu0 * j * \(a^{2}\) / (2r)

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Answer:

This means the source of sound vibrates 50 times in one second. Therefore, number of vibrations in 1 minute, i.e. in 60 seconds = 50 x 60 = 3000 times.

Explanation:

Answer:

Fetus

Explanation:

the outsiders I got nuggets out of the elder and I get to make it in and I got I got

Answer:

The ratio of effusion rates of hydrogen gas to argon gas is approximately 4.47:1.

Explanation:

The ratio of effusion rates of two gases can be determined using Graham's law of effusion. According to Graham's law, the ratio of the effusion rates of two gases is equal to the square root of the inverse ratio of their molar masses.

In this case, we need to find the ratio of the effusion rates of hydrogen gas (H2) and argon gas (Ar).

The molar mass of hydrogen gas (H2) is approximately 2 g/mol, and the molar mass of argon gas (Ar) is approximately 40 g/mol.

Using Graham's law, the ratio of effusion rates (R) can be calculated as:

R = √(M2/M1)

R = √(40/2) = √(20) = 4.47

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The ionosphere refers to the uppermost layer of Earth's atmosphere, extending between 80 km and 1000 km above the surface. It earns its name due to the presence of charged particles, or ions, within this region.

These ions interact with radio waves, causing effects such as absorption, refraction, deflection, and reflection. These behaviors are particularly relevant to communication systems that rely on radio waves, including GPS.

The ionosphere plays a crucial role in GPS signal propagation.

As GPS signals pass through the ionosphere, the presence of electrons within this region causes a slowdown in the signals. The extent of this slowdown is directly related to the electron density present in the ionosphere.

Total Electron Content (TEC) is a unit of measurement used to quantify electron density, denoted as TECu (Total Electron Content Unit).

Higher TECu values indicate increased electron density, resulting in a greater delay in the GPS signals. Moreover, the delay is more pronounced for signals transmitted at the L2 frequency compared to those at the L1 frequency. L1 and L2 refer to two distinct frequencies of GPS signals.

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The United States of America was the first country to land a spacecraft on the moon.

The historical event occurred on July 20, 1969, when the Apollo 11 mission successfully placed the lunar module, "Eagle," on the moon's surface. Astronauts Neil Armstrong and Edwin "Buzz" Aldrin became the first human beings to walk on the moon, while Michael Collins orbited above in the command module. This achievement marked a major milestone in space exploration and demonstrated American technological superiority during the Cold War.

This mission marked the first successful soft landing on the moon and was a major milestone in space exploration. The Luna 9 spacecraft was the first of many lunar landers and rovers sent to the moon, laying the foundation for more ambitious lunar missions such as the Apollo 11 mission in 1969, which was the first mission to put humans on the moon.

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The authors of the simulation made scaling choices so that the tidal distortion effect from the moon on Earth could actually be seen and appreciated.

The simulation was designed to demonstrate the tidal distortion effect, which is the result of gravitational forces between theEarthh and the moon. The effect causes the tides to rise and fall in a predictable pattern. In order for this effect to be visible in the simulation, the authors needed to scale the earth and moon appropriately.

The scaling choices in the simulation were made with a specific purpose in mind, which was to illustrate the tidal distortion effect between the Earth and the moon. By scaling the objects in the simulation appropriately, the authors were able to achieve this goal and provide a clear visualization of this phenomenon.

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At time t1=2.0 s, the 3 kg block is moving at a speed of 4.0 m/s.

a group of connected parts arranged to transmit force or change force in order to carry out beneficial task. Also known as a basic machine. a mechanism, especially a lever, screw, wedge, or pulley, for changing the strength or direction of a force.

Machines are typically defined as devices that modify the speed of a motion or convert it from one type of motion to another utilizing gears, pulleys, belts, shafts, cams, or cranks.

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The energy density of butter is approximately 35 MJ/kg. Option (d)

Butter is a food that contains both fats and proteins. The energy density of butter is determined by the amount of energy that is released from the fat when it is metabolized by the body. Fats have a higher energy density than proteins or carbohydrates, meaning they contain more energy per unit of mass.

The energy density of butter is approximately 35 MJ/kg. This means that one kilogram of butter contains enough energy to produce 35 megajoules of energy when metabolized by the body.

It's important to note that while butter may have a high energy density, it should be consumed in moderation as part of a balanced diet. Excessive consumption of butter or other high-fat foods can lead to weight gain and other health issues. It's recommended that individuals consume a variety of nutrient-dense foods to maintain optimal health.

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According to the question the temperature of the gas is 473.12 K.

Temperature is a physical quantity that is used to measure the heat energy of an object or environment. Temperature is measured in a variety of scales, including Fahrenheit, Celsius, and Kelvin. Temperature is a measure of the average kinetic energy of molecules in a substance, and it is determined by the amount of heat energy transferred between two objects. Temperature can vary drastically between different objects, environments, and locations.

The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the universal gas constant and T is the temperature.

We can rearrange this equation to solve for T, giving us T = PV/nR.

Substituting in the values given, we have:

T = (1.60 x 106 Pa) * (8.35 L) / (3.10 moles * 8.314 J/K • mol)

T = 473.12 K

Therefore, the temperature of the gas is 473.12 K.

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Answer:

8.79 J

Explanation:

Given that a slinky is traveling down the stairs, like in the video clip below. What is the total KINETIC ENERGY of the slinky at the bottom of the stairs (just before it stops moving) IF the Height of the stairs is 2 meters, the weight of the slinky is 4.41 Newtons, its spring constant is 0.84 N/m, and the distance the slinky is initially stretched (to get it going) is 0.25 meters??

Total energy = mgh

Total energy = 4.41 × 2 = 8.82 J

Elastic potential energy = 1/2 × Ke^2

Elastic potential energy = 1/2 × 0.84 × 0.25^2

Elastic potential energy = 0.02625

Also,

Total energy = P.E + K.E

Substitute them into the formula above

8.82 = 0.02625 + K.E

K.E = 8.82 - 0.02625

K.E = 8.79375

K.E = 8.79 J

Therefore, the KINETIC ENERGY of the slinky at the bottom of the stairs is 8.79 Joules approximately

Answer:

Jupiter

Explanation:

Jupiter is the largest planet in our solar system and is about 11 times larger than earth.

The area of the piston that holds the ride is 8333,33 \(cm^{2}\)

For hydraulic press system pressure in = pressure out

P = Pressure

F = Force

A = Area

The formula P = \(\frac{F}{A}\)

We know F1 = 72 N, A1 = 30 \(cm^{2}\)

                F2 = 20000 N

The area of the piston that holds the ride = A2

P 1 = P2

\(\frac{F1}{A1}\)  = \(\frac{F2}{A2}\)

\(\frac{72 N}{30 cm^{2} }\)   =  \(\frac{20000 N}{A2}\)

A2 = 20000 N : ( \(\frac{72 N}{30 cm^{2} }\) )

A2 = ( 20000 N x 30 cm2 ) : 72 N

     = 8333,33 cm2

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Answer:

true

Explanation:

Some factors of heart disease cannot be controlled. A diet rich in high-density lipoproteins (HDLs) can help cleanse and open arteries that are clogged with plaque. Exercise can help prevent heart disease but once you've had a heart attack, it's too late for exercise to help you.

Answer: 2934.75 Joules

Explanation:

Potential energy can be defined as energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

P.E = mgh

Where P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per second square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

P.E = mgh

But we know that weight = mg = 645N

Substituting into the equation, we have;

P.E = 645 • 4.55

P.E = 2934.75J

Potential energy, P.E = 2934.75 Joules.

Two students push on a box in the same direction and a third student pushes in the opposite direction. The net force on the box if each push with a force of 50 N is (F)= 50N.

According to the first law of newton's law of motion when a particle is at rest it always be at rest if any external thing affect on it. That external or internal thing that helps the object move that called Force. It can be measured in Newton, Dyne.

To calculate the force we have to study the question carefully. Two  students push on a box in the same direction and a third student pushes in the opposite direction. So according to the question the net force will be,

F = 2f₁-f₂

Here we know,

f₁= The amount of force that two students apply on the same direction. = 50 N.

f₂= The amount of force that students apply on the opposite direction. = 50 N.

We have to calculate the net force= F N.

Now we put the values in above equation, we get,

F = 2f₁-f₂

Or, F= 100-50

Or, F=50N

From the above calculation we can say that,  The net force on the box if each push with a force of 50 N is (F)= 50N.

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A substance's atoms split from one another when it transforms from a liquid to a gas. The distance between atoms widens in a gaseous state as opposed to a liquid state. In a gaseous condition, the atoms are randomly moving. Entropy is growing.

A substance's physical state transitions from its gas phase to its liquid phase through the process of condensation. When water vapor comes into touch with a solid surface, it can also be said to transform into water droplets. The solute and solvent can be removed from their solution with the help of this procedure. The solvent evaporates from the solution when it is heated, and is then separated when it condenses.

Despite the fact that a liquid and a gas are both at the same temperature, a gas has greater thermal energy than a liquid. Consider the fact that the thermal energy of the same substance's liquid molecules is lower than that of its gaseous molecules. As a result of their greater kinetic energy, the gas molecules are "freer" to move more.

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Answer:

There is only a beat frequency when the frequency heard (perhaps a tuning fork) is different from the frequency from  the object in question (piano string, etc.).

The beat frequency equals the difference of the frequencies of the sources.

The piano tuner should adjust the tension in the wire to: C. decrease the amount of interference and decrease the beat frequency.

A wave can be defined as a disturbance created in a medium, which progressively transports energy from a source to another location without the transportation of matter.

Basically, some of the phenomenon and properties associated with waves include the following:

An interference refers to a phenomenon in which two (2) waves meet while traveling along the same medium and they superpose to produce a resultant wave with either a lower, greater, or the same amplitude.

In this scenario, a beat frequency is being heard by a piano tuner when using a tuning fork to tune a piano wire. Thus, the piano tuner should adjust the tension in the wire, so as to decrease the amount of interference and the beat frequency.

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(a) The work function  is 1.98 x 10⁻¹⁹ J.

(b) The threshold frequency is 3 x 10¹⁴ Hz.

(c) The maximum kinetic energy of the most energetic electron is 3.32 x 10⁻¹⁹ J.

(d) Photo-electron would be ejected.

(e) The only constant parameter would be speed of the photon.

(f) The slope of the graph is 6.67 x 10⁻³⁴ J.s

(a) The work function of the experimental photo-missive material is calculated as follows;

Ф = hf₀

where;

Ф = hf₀

Ф = 6.626 x 10⁻³⁴ x 3 x 10¹⁴

Ф = 1.98 x 10⁻¹⁹ J

(b) The threshold frequency of the experimental photo-missive material is the frequency at which the kinetic energy is zero = 3 x 10¹⁴ Hz.

(c) The maximum kinetic energy of the most energetic electron is calculated as;

K.E = E - Φ

K.E = ( 6.626 x 10⁻³⁴ x 8 x 10¹⁴) -  1.98 x 10⁻¹⁹ J

K.E =  3.32 x 10⁻¹⁹ J

(d) The frequency of the photon with a wavelength of 500 nm is calculated as;

f = c/λ

where;

f = ( 3 x 10⁸ ) / ( 500 x 10⁻⁹ )

f = 6 x 10¹⁴

Since the frequency of the incoming photon is greater than  the threshold frequency, photo-electron would be ejected.

(e) If you use a different experimental photo-missive material the only parameter that would be the same on the graph is speed of photon.

(f) The slope of the graph is calculated as;

m = (2.5 eV - 0 eV) / [(9 - 3) x 10¹⁴]

m = (2.5 ev) / (6 x 10¹⁴)

m = (2.5 x 1.6 x 10⁻¹⁹ ) / (6 x 10¹⁴ )

m = 6.67 x 10⁻³⁴ J.s

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