A small 350 gram ball on the end of a thin, light rod is rotated horizontal circle of radius 1. 2 m. Calculate a. The moment of inertia of the ball about the center of the circle and b. The torque needed to keep the ball rotating at constant angular velocity if air resistance exerts a force of 0. 020 N on the ball. Ignore air resistance on the rod and it's moment of inertia. ​

Answer:

Weather

Weather describes what the atmosphere is like at a specific time and place, and may include temperature, wind, and precipitation. Weather is the change we experience from day to day. Climate is the long-term average of weather in a particular spot.

Explanation:

Stem-and-leaf plots are an excellent way to display data. The outliers in a stem-and-leaf plot are the observations that are located far away from the other observations.

Stem-and-leaf plots are excellent for displaying numerical data in an orderly manner. They assist in determining the minimum, maximum, and range of data and can assist in determining patterns and variations. They also provide an excellent visual representation of the distribution of data and are a fantastic tool for spotting outliers. Outliers are observations in a dataset that are considerably different from the other observations. They can be identified in stem-and-leaf plots as values that are located far away from the rest of the data.

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A hub typically has indicator lights to show the status of its ports, power, and connectivity.A hub is a networking device that connects multiple devices together in a network. To help users monitor the status of the hub, it usually comes with indicator lights that show various information.

The most common type of indicator light found on a hub is the port status light, which indicates the connection status of each port. If the light is green, it means that the port is functioning properly, and if it is red, it means that the port has a problem.

The hub also has a power light, which indicates that the hub is receiving power. If the light is on, it means that the hub is powered on and working. In addition to these lights, a hub may also have a connectivity light that indicates whether the hub is connected to the network or not. If the light is on, it means that the hub is connected to the network, and if it is off, it means that the hub is not connected. Some hubs may also have other types of indicator lights to show other information, such as data transfer speed or collisions on the network.

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Answer:

The correct option is;

d. A coil

Explanation:

When a wire, which is an electric conductor is formed into the shape of a coil, and current is allowed to flow through the wire coil, a magnetic field is generated

The magnetic field generated by the electromagnetic coil has direction that consists of flux emanating from one end of the coil and entering the coil from the other end, similar to that of the magnetic field produced by a normal bar magnet.

Answer:

The maximum speed an object can fall in the presence of air resistance

Newton's third law

A coil

Answer: The thickness of the vertical flow lines indicates the relative quantity.

The thickness of the vertical flow lines indicates the relative quantity.

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The quantum number of an electron confined in a 5.0-nm-long one-dimensional box, with a de Broglie wavelength of 2.0 nm, can be determined using the formula n = L/λ, where n is the quantum number, L is the length of the box, and λ is the de Broglie wavelength.

In a one-dimensional box, the allowed energy levels for a particle are determined by the length of the box and the de Broglie wavelength associated with the particle. The quantum number n represents the number of nodes or segments that can fit within the box.

Using the formula n = L/λ, we can calculate the quantum number by dividing the length of the box (L = 5.0 nm) by the de Broglie wavelength (λ = 2.0 nm).

Substituting the values, we get n = 5.0 nm / 2.0 nm = 2.5. However, quantum numbers must be integers, so we round down the result to the nearest whole number. Therefore, the quantum number for the electron confined in the 5.0-nm-long one-dimensional box with a de Broglie wavelength of 2.0 nm is 2.

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1. Newton's law of universal gravitation: Every object attracts every other object in the universe.

2. Weight measures gravitational pull, while mass measures the amount of matter.

3. The moon orbits the Earth due to gravity and inertia working together.

4. Factors affecting gravity: distance and mass.

5. Gravity and inertia work together to change the motion of objects.

6. Gravity decreases with increasing distance between objects.

7. Paper airplane's path: curved towards the floor due to Earth's gravitational pull.

8. Earth has more inertia than the moon due to its greater mass.

Every object in the universe attracts every other object - This statement accurately describes Newton's law of universal gravitation.

A newton reflects the amount of force an object exerts - This statement accurately describes a newton. A newton is the unit of measurement for force.

If the masses of the objects increase, then the force between them also increases - This statement accurately describes the relationship between diagram X and Y. According to Newton's law of universal gravitation, the force of gravity between two objects is directly proportional to the product of their masses.

Weight is a measure of gravitational pull - This statement accurately explains how weight is different from mass. Weight is a measure of the force exerted on an object due to gravity, while mass is a measure of the amount of matter in an object.

The moon's orbit around Earth results from the combination of gravity and inertia working on the moon - This statement accurately describes the action resulting from the combination of gravity and inertia working on the moon. Gravity pulls the moon toward the Earth, while the moon's inertia keeps it moving in a curved path around the Earth.

Distance and mass are factors that affect the force of gravity between objects - This statement accurately identifies the factors that affect the force of gravity between objects. According to Newton's law of universal gravitation, the force of gravity is inversely proportional to the square of the distance between the objects and directly proportional to the product of their masses.

Gravity and inertia work together to change the motion of objects - This statement accurately explains how gravity and inertia work together. Gravity can cause objects to accelerate or change direction, while inertia is the tendency of an object to resist changes in its motion.

Gravitational pull decreases when the distance between two objects increases - This statement accurately describes how gravity works. According to Newton's law of universal gravitation, the force of gravity decreases as the distance between two objects increases.

The paper airplane will create a curved path toward the floor as it is pulled toward Earth's center - This statement best describes the path of the paper airplane. The force of gravity pulls the paper airplane toward the center of the Earth, causing it to follow a curved path.

Earth has more inertia than the moon - This statement accurately describes how Earth compares to the moon. Inertia depends on mass, and Earth has a greater mass than the moon, so it has more inertia.

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Answer:

20m/second

Explanation:

The reason the answer is 20m/second is because to find the speed of the ball  in this question you have to divide the distance over the time giving you the result of 20m/second

If we wanted to search for faint rings around a giant planet by sending a spacecraft on a flyby, it would be best to make your observations after the spacecraft passed the planet.

The primary demanding situations involved in sending probes to the giant planets are distance, environment, and low energy levels. All gasoline large planets namely Jupiter, Saturn, Uranus, and Neptune inside the sun gadget have jewelry, at the same time as the terrestrial planets like

Mercury, Venus, Earth, and Mars are no longer.in observations of other planets, Mercury is hard to explore. the rate required to attain it is pretty excessive, and its proximity to the sun makes it difficult to maneuver a spacecraft into a solid orbit around it.

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Answer:

It says about the motion and the graph of the object is stationary, basically travelling at the same speed at any time of the graph. It will never change.

Explanation:

To draw a diagram:

1. Draw an object and represent the speed as stationary and constant at any time.

Answer:

Explanation:

The series three. The series 3 will cut the voltage into 1/3. The current will also be lower because of the voltage drop.

The parallel circuit will not cut the voltage and the current will be tripled because each bulb is taking out exactly what it needs.

As an aside, house wiring would be a nightmare if the bulbs were connected in series. If one bulb burned out, you'd have to find it in the dark because they all would go out.

The height of the roof is approximately 2.876 meters.

Part the underlying speed into its components:

v₀x = v₀ * cos(θ)

v₀y = v₀ * sin(θ)

Given:

Using the provided values, we can determine v₀x and v₀y: v₀ = 15.2 m/s (initial velocity);  = 63.0° (projection angle); t = 2.40 s (flight time).

Now, let's use the vertical displacement equation to determine the vertical displacement (y): v₀x = 15.2 * cos(63.0°), v₀y = 15.2 * sin(63.0°)

y = v₀y * t + (1/2) * (-9.8 m/s2) * t2 = v₀y * t - 4.9 * t2 Using the values we obtained as a starting point:

Δy = (15.2 * sin(63.0°)) * 2.40 - 4.9 * (2.40)²

=2.876 m

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Answer:

Explanation:

What is a free body diagram?

Answer: a force diagram is a graphical illustration used to visualize the applied forces and resulting reactions on a body in a given condition

Drawing a free-body diagram for this problem

Answer: Look at the attached picture, ask me any questions if you are still confused. It is a little messy since I didn't have my pen.

Find its weight on Earth

Answer: The weight is dependent on the mass of the object and the gravitational constant on the planet. The gravitational constant, in this case, is 9.8.

   so the weight = mass * gravitational constant = m * g = 1000 * 9.8

                          = 9800 N

Hope that helps!

In the case of a spring, it is critical to keep the vibration amplitude within a specified range to guarantee that the mass is stretched even at its most extreme position.

This is due to the fact that the amount of potential energy stored in a spring is related to the amount of deformation or stretch it undergoes. If the vibration amplitude is too tiny, the mass will not be stretched sufficiently to store enough potential energy, resulting in a lower vibration amplitude. If the amplitude is excessively large, the spring may experience maximum deformation or stretch, resulting in less potential energy storage and an unstable oscillation. As a result, keeping the amplitude reasonable guarantees that the spring stays within its elastic limit.  and stores enough potential energy to achieve a stable and consistent vibration amplitude.

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Answer:

2 seconds

Explanation:

It only went up by 2

The magnitude of the electric force on the charge is 5 N.

The magnitude of force on the charge is calculated as follows;

F = Eq

where;

F = 100 N/C  x 0.05 C

F = 5 N

Thus, the magnitude of the electric force on the charge is 5 N.

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Answer:

5n downward

Explanation:

took the assignment

Star B is closer than star A, because 1/ 0.58 = 1.72 pc, while 1/.73 = 1.36 pc.

To calculate the distances to nearby stars, astronomers employ a phenomenon known as parallax. The apparent displacement of an object due to a change in the viewer's point of view is known as parallax. The distances between close stars can be calculated using this phenomenon. A nearer star will seem to move against the farther-off background stars as the Earth revolves around the Sun. By measuring a star's position once, then again six months later, astronomers can establish the apparent shift in location of that star. The apparent motion of the star is referred to as stellar parallax.

A straightforward correlation exists between the distance of a star and parallax angle:

\(d=\frac{1}{p}\)

The distance d and parallax angle p are both measured in parsecs and arcseconds, respectively.

Stellar parallax of star A= 0.58 arcseconds

Stellar parallax of star B= 0.73 arcseconds

So, on applying the formula,

The distance of the star A= 1.72pc

And the distance of the star B= 1.36pc

Therefore, star B is closer than star A.

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A) water medium is usually used for determining the refractive index.

In physics, refraction is the direction change brought on by a wave's speed change as it travels through a medium. For instance, waves move more quickly in deep water than they do in shallow.

The most often investigated characteristic in the forensic analysis of glass pieces is refractive index since it is easily evaluated on the minuscule shards typically found in casework.

Glass is the ideal real-world illustration of light refraction. A glass jar will make an object appear smaller and a little elevated when viewed through it. The text on a piece of paper or a document will appear closer to the surface if a slab of glass is placed over it due to the different angle the light is bending at.

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The complete question is:

Forensic scientists immerse glass evidence into a medium to determine its refractive index. Which medium is usually used for determining the

refractive index?

A. water

B. Air

C. Gel

D. Oil

Answer:

the gas that escaped from the mixture contained the missing weight

The answer is that the meteorite will strike the Earth at a speed of 2.31 x 10²⁰ N·s/m, depending on its mass.

Assuming the meteorite falls in a vacuum and there are no other forces acting on it, it will accelerate as it falls towards the Earth. This acceleration is caused by the gravitational force of the Earth, which is equal to:

F = GMm/r²

where G is the universal gravitational constant, M is the mass of the Earth, m is the mass of the meteorite, and r is the distance between the two objects.At a height of 3.41 x 10⁷ m, the gravitational force can be calculated as follows:

F = (6.67 x 10⁻¹¹) (5.97 x 10²⁴) (m) / (3.41 x 10⁷)2

F = 6.64 x 10¹⁴ N

This is the force causing the acceleration of the meteorite.

The acceleration can be calculated using Newton's Second Law, which states that the force is equal to the mass times the acceleration.

F = ma

Solving for a, we get:

a = F/m

Plugging in the values we calculated above, we get:

a = (6.64 x 10¹⁴ N)/m

By the time the meteorite reaches the surface of the Earth, it will have accelerated to a velocity equal to the integral of the acceleration over time. This can be expressed as follows:

v = ∫a dt

This integral can be solved using the equation for acceleration we derived above:

v = ∫(6.64 x 10¹⁴ N/m)dt

Solving for v, we get:

v = (6.64 x 10¹⁴ N/m)t

At the surface of the Earth, the time since the meteorite was at a height of 3.41 x 10⁷ m is equal to:

t = (3.41 x 10⁷ m)/(9.8 m/s²)

t = 3.48 x 10⁵ s

Plugging this into our equation for velocity, we get:

v = (6.64 x 10¹⁴ N/m)(3.48 x 10⁵ s)

v = 2.31 x 10²⁰ N·s/m

Finally, we can convert this to speed by dividing by the mass of the meteorite:

v = (2.31 x 10²⁰ N·s/m)/m

So, the answer is that the meteorite will strike the Earth at a speed of 2.31 x 10²⁰ N·s/m, depending on its mass.

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PE = 450 m

Given

The initial problem might be like this

A 1.0-kg ball is thrown into the air with an initial velocity of 30 m/s.

Required

Potential energy

Solution

h max = vo²sin²θ/2g

h max = 30²sin²90/2.10

h max = 45 m

PE = m.g.h

PE = 1 x 10 x 45

PE = 450 m

In Sound Navigation and Ranging (SONAR), the sound wave is transmitted through water and it will reflect by hard surfaces. Option B) is correct.

SONAR is used to create nautical charts, find underwater navigation hazards, search for and map things on the seafloor such as shipwrecks and map the seafloor itself, waves are transmitted into the waver and reflected by hard surfaces.

The transmission and receiving of sound waves are involved in active sonar. For example, when a submarine is used to map the topography of the ocean floor.

It emits sound pulses known as pings towards the bottom of the ocean in its area.

Thus, 'Sound is transmitted through water and reflected by hard surfaces is the correct option'.

The question is incomplete. The options are missing in the question. They are A) Sound is transmitted through the water and diffracted by hard surfaces. B) Sound is transmitted through the water and reflected by hard surfaces. C) Sound is diffracted through the water and transmitted by hard surfaces. D) Sound is diffracted through the water and reflected by hard surfaces.

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a. The centripetal acceleration of the car is 0.5 m/s².

b. The centripetal force on the car is 600 N.

c. The coefficient of static friction between tires and the road is 0.051.

d. The car's speed is doubled, we need a coefficient of static friction of 0.204 to prevent the car from sliding.

a. The formula for the centripetal acceleration of the car is given as below:

ac = v²/r

where ac is the centripetal acceleration,

v is the speed, and

r is the radius of curvature of the circular path.

Substituting the values given in the problem, we get:

ac = (20 m/s)²/800 m = 0.5 m/s²

b. The formula for the centripetal force of the car is given as below:

F = mac

where F is the centripetal force,

m is the mass of the car, and

ac is the centripetal acceleration.

Substituting the values given in the problem, we get:

F = (1200 kg)(0.5 m/s²) = 600 N

c. The formula for the maximum static frictional force is given as below:

\(f_{max}\) = μsN

where \(f_{max}\) is the maximum static frictional force,

μs is the coefficient of static friction, and

N is the normal force acting on the car.

For a car moving in a circular path, the normal force is equal to the weight of the car, which is given by:

N = mg

where m is the mass of the car and g is the acceleration due to gravity (9.8 m/s²).

Substituting the above equations and solving for μs, we get:

\(f_{max}\) = μsN

⇒ μs = \(f_{max}\) / N

Substituting the values given in the problem, we get:

\(f_{max}\) = mac = (1200 kg)(0.5 m/s²) = 600 N and

N = mg = (1200 kg)(9.8 m/s²) = 11760 N

Therefore,μs = 600 N/11760 N = 0.051

d. Doubling the speed of the car will cause the centripetal acceleration to double as well.

The formula for centripetal acceleration is given as:

ac = v²/r,

where ac is the centripetal acceleration,

v is the speed, and

r is the radius of curvature of the circular path.

Substituting the new speed (40 m/s) into this formula, we get:

ac = (40 m/s)²/800 m = 2 m/s²

Therefore, the new centripetal acceleration is 2 m/s².

Using the same formula as in part (c), we can find the new coefficient of static friction.

The maximum static frictional force is still equal to the centripetal force, which is given by:

F = mac = (1200 kg)(2 m/s²) = 2400 N

Therefore,

μs = \(f_{max}\)/N = 2400 N/11760 N = 0.204

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Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

Answer:

The correct option is;

D. There is not enough information to answer this question

Explanation:

The universal gravitational constant = 6.67408 × 10⁻¹¹ 3³/(kg·s²)

For an in between distance of 1 m and equal masses of 60 kg, we have;

\(F = G \times \dfrac{m_{1} \times m_{2}}{r^{2}} = 6.67408 \times 10^{-11} \times \dfrac{60 \times 60}{1^{2}} \approx 2.403 \times 10^{-7} N\)

The gravitational attraction ≈ 2.403 × 10⁻⁷ N, which does not correspond with the answers, therefore, the best option is that there is not enough information to answer this question.

Answer:

Explanation:

Answer:

Earth receives the perfect amount of heat and light that allow life to flourish

Answer:

A. Rotating Crops

Explanation:

Just took the test lets go

Based on the given options, the best method that helps to prevent wind erosion is rotating crops.

Erosion is the removal or washing away of the topmost layer of the earth by agebys of erosion.

The agents of erosion include wind, ice and water.

Wind erosion refers to erosion by wind.

Erosion by wind occurs mostly if the top layer of the eart is devoid of plants.

In order to prevent wind erosion, planting of cover crops and crop rotation is employed.

Therefore, of the given options, the best method that helps to prevent wind erosion is rotating crops.

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Answer:

Explanation:

(4.8 m/s)t = 1/2(2.2 m/s²)t²

2(4.8 m/s)t / (2.2 m/s²) = t²

2(4.8 m/s) / (2.2 m/s²) = t²/t

t = 4.36 s

A.  total time it takes to catch up to friend = 4.36s + 2s = 6.36s    (took her 2 sec to hop on the bike and get going)

B. Distance she travels is the same distance the friend travels in 4.36 s = (4.8 m/s)(4.36 s) = 1/2(2.2 m/s²)(4.36 s)² = 20.9 m