This part of the bike consists of hubs, spokes, rims, and tires (more that answer)
saddle
wheels
crank
brakes

The magnetic field in the solenoid, is 2.5 x 10⁻³ T.

The self-inductance of the solenoid, is 6 x 10⁻⁵H.

The energy stored in the magnetic field, is 7.5 x 10⁻⁴J.

Number of turns of wire in the solenoid, N = 300

Radius of the solenoid, r = 12 cm = 0.12 m

Area of cross section, A = 4 cm² = 4 x 10⁻⁴ m²

Current through the solenoid, I = 5 A

a) Magnetic field in the solenoid,

B = μ₀NI/2πr

B = 4π x 10⁻⁷ x 300 x 5/2π x 0.12

B = 2.5 x 10⁻³ T

b) The self-inductance of the solenoid,

L = μ₀N²A/2πr

L = 4π x 10⁻⁷ x 300² x 4 x 10⁻⁴/2π x 0.12

L = 6 x 10⁻⁵H

c) The energy stored in the magnetic field,

U = 1/2 LI²

U = 1/2 x 6 x 10⁻⁵ x 5²

U = 7.5 x 10⁻⁴J

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From the principle of the conservation of energy, the velocity of the moving skater would be transferred to the stationary skater.

We know that according to the principle of the conservation of energy, energy can neither be created nor destroyed but we can be able to convert the energy from one form to the other. Given the fact that the energy of the object can be converted, we can also look at the collision as being an inelastic Collison.

Let us recall that a collsion is said to be in elastic if the momemtum and thge kinetic energy of the colliding particles is not conserved. The simple implication of this is that the objects would stick together and then move at a common velocity after the collision must have taken place in the system.

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Answer:

Huhfgyyeyvvucvyehukfsdjbjz/////???

The terms specific to the observer are e, f, and g. The ecliptic is the path that the Sun appears to follow across the sky throughout the year as viewed from Earth.

The horizon is an imaginary line that marks the point where the sky and the Earth's surface seem to meet. The zenith is an imaginary point directly overhead from the observer's location.

The celestial equator is an imaginary line that runs around the celestial sphere, dividing it into two hemispheres. The north celestial pole is the point directly above the observer's north horizon. The nadir is an imaginary point directly below the observer's location.

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Answer:

Let x be the price of the cheaper book.

x + 2x = 126

3x = 126

x = 126/3

x = 42

The price of the cheaper book is $42.

42 * 2 is the price of the other book

42 * 2 = 84.

$84 is the price of the other book.

Answer:

0.25 J

Explanation:

If two objects, one with a mass of 1000 kg and another with a mass of

2500 kg are separated by a distance of 100 m, and the force between

them is 1.667 * 10⁻⁸ N.

The force, F, between two masses separated by a distance, d, is given by the formula below:

F = Gm₁m₂ / d²

where;

G is gravitational constant = 6.67 * 10⁻¹¹ Nm²/kg²

m₁ is the mass of the first object = 1000 kg

m₂ is the mass of the second object = 2500 kg

d is distance = 100 m

The force will then be;

F = 6.67 * 10⁻¹¹ * 1000 * 2500 / 100²

F = 1.667 * 10⁻⁸ N

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Answer:

2 seconds

Explanation:

It only went up by 2

Answer:

D. A contrast between the power of a black hole and the power of a whirlpool is being made.

Answer:

D

Explanation:

Answer:

The speed of the bus moving at a speed of 45 km/h in m/s is (a) 1.25 x \(10^{1}\) m/s.

Explanation:

What is speed?

Speed is defined as the distance covered by a moving body in unit time (that is 1 s, 1 minute, or 1 h).

The bus is moving at a speed of 45 km/h.

i.e, in 1 hour, the bus moves a distance of 45 km.

Since 1 hour = 60 minutes and 1 km =  \(10^{3}\) m, so, we may say that

In 60 minutes the bus moves a distance of 45 x \(10^{3}\) m.

Since 1 minute = 60 seconds,

So 1 hour = 60 x 60 s = 3600 s. Thus,

In 3600 s, the bus moves a distance of 45 x \(10^{3}\) m.

In 1 s, the bus moves a distance of  \(\frac{45 * 10^{3} }{3600} m\)

Simplifying the expression we get,

The bus moves at a speed of 12.5 m/s or 1.25 x \(10^{1}\)m/s.

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It is accurate to say that infrared energy, conduction to air later rising in convection, and evaporation are the processes in which the heat energy so produced exits the surface of land masses.

Fluid or gas particles are frequently moved by convection currents. These are produced as a result of variations in a particular gas or fluid's density and temperature. One of the two ways to transmit heat is through convection; the other two are through radiation and conduction. Only fluids, such as liquids and gases, undergo the convection process. This occurs because molecules within liquids and gases are free to move.

The difference in temperature between the two portions of the fluid can cause the convection process, which transfers heat energy. This temperature differential causes hot fluids to have a tendency to ascend while cold fluids have a tendency to sink.

The correct question is:

Which are ways in which heat energy leaves the surface of land masses? Select the three correct answers.(2 points)

a).evaporation

b).glacial motion

c).animal activity

d).conduction to air, which then rises in convection

e).plant growth

f).radiation of infrared energy

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The acceleration of the object with an applied force of 100N and a mass of 50kg is 2m/s².

Acceleration is defined as the change in velocity per unit time. Velocity is defined as the speed of the object in a particular direction. The acceleration is a vector quantity. The unit of acceleration is m/s².

According to Newton's second law, Force is directly proportional to the acceleration of the object. F = m×a, where F is the force of the object, m is the mass of the object and a is the acceleration of the object.

From the given,

Force, F = 100N

mass of the object, m=50kg

acceleration of the object, a=?

F = m×a

a =F/m

  = 100/50

  =2m/s².

Thus, the acceleration of the object is 2m/s².

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speed = distance/time

Answer:

velocity= distance divided by time

Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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Answer:

S = V0 t + 1/2 a t^2      net distance traveled

5.2 = a/2 * 25

a = 10.4 / 25 = ,416 m / s^2

F = m * a

m = F / a = 24 / .416 = 57.7 N

Answer:A change in the ball's velocity can change its momentum. Momentum is defined as the product of an object's mass and its velocity, so any change in the velocity of the soccer ball will result in a change in its momentum. This change can be caused by various factors, such as a kick or a collision with another object.

The size of the soccer field, air temperature, and the number of players on the field are unlikely to directly affect the momentum of the soccer ball. However, these factors can indirectly affect the game and potentially lead to changes in the ball's velocity or direction of motion, which can in turn affect its momentum. For example, a change in air temperature can affect the air resistance acting on the ball, which can alter its trajectory and speed. Similarly, the number of players on the field can affect the available space and opportunities for the ball to be kicked or redirected.

Explanation:

The goose will take 8.55 hours to travel 550 km at their average speed of 64.3km/h.

The goose average speed is around 40 mph or 64.3 km/h, but in good weather and wind conditions this speed can go up to 70 mph or 112 km/h

Considering the formula:

x = v.t

were x=space, v=speed and t= time. Clearing the equation, to find the hours of flight:

t = x/v = 550km / 64.3km/h = 8.55 hours

Average speed is a useful concept in many fields, including physics, engineering, and transportation. It can be used to calculate travel times, estimate fuel consumption, and analyze the performance of machines and vehicles. However, it is important to note that average speed does not take into account changes in direction or acceleration, which can affect the overall performance of an object.

Average speed is a measure of how quickly an object moves over a certain distance. It is defined as the total distance traveled divided by the time it takes to travel that distance. The units of average speed are usually expressed as distance per unit time, such as kilometers per hour, miles per hour, or meters per second.

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The actual percentage decrease in the perimeter is 13%, not 25%. While it is true that 15% + 10% is 25%, this is not the correct way to calculate the overall percentage decrease in the perimeter.

To see why this is the case, let's first calculate the original perimeter of the rectangle. The formula for the perimeter of a rectangle is:

P = 2L + 2W

where P is the perimeter, L is the length, and W is the width. Plugging in the given values, we get:

P = 2(60) + 2(40) = 120 + 80 = 200 cm

Now let's calculate the new dimensions of the rectangle after the length and width have decreased by 15% and 10%, respectively. To do this, we need to find 15% of 60 and 10% of 40:

15% of 60 = 0.15 x 60 = 9 cm
10% of 40 = 0.1 x 40 = 4 cm

So the new length is:

60 - 9 = 51 cm

And the new width is:

40 - 4 = 36 cm

Now we can calculate the new perimeter using the same formula as before:

P' = 2(51) + 2(36) = 102 + 72 = 174 cm

So the new perimeter is 174 cm. To find the percentage decrease in the perimeter, we can use the formula:

% decrease = (original value - new value) / original value x 100%

Plugging in the values we just calculated, we get:

% decrease = (200 - 174) / 200 x 100% = 13%

So the actual percentage decrease in the perimeter is 13%, not 25%. While it is true that 15% + 10% is 25%, this is not the correct way to calculate the overall percentage decrease in the perimeter.

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Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

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On the moon you weigh 6 times lighter so for this problem you multiply 140n by 6.

Your weight on the Moon is 16.5% what you would experience on Earth. In other words, if you weighed 100 kg on Earth, you would weigh a mere 16.5 kg on the Moon. For you imperial folks, imagine you tipped the scales at 200 pounds.

It’s because of the lower gravity on the Moon. Objects on the surface of the Moon experience only 16.5% of the gravity they would experience on Earth.

The mass of the Moon is only 1.2% the mass of the Earth, so you might expect it to have only 1.2% of the gravity. But it’s only 27% of the size of the Earth, so when you’re standing on the surface of the Moon, you’re much closer to its center of gravity.

Therefore, On the moon you weigh 6 times lighter so for this problem you multiply 140n by 6.

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The exterior or housing, the audio reception and speaker system, the picture tube, and a complicated mass of electronics including cable.

Antennae input and output devices, a built-in antenna in most sets, a remote control receiver, and computer chips, make up the four main sets of parts that make up a television.

Typically, in addition to coaxial cable, HDMI, and other audio-video connectors, smart TVs also enable Ethernet, WiFi, USB, Bluetooth, and flash memory cards from digital cameras.

Therefore, the TV consists of exterior, audio reception, speaker system, and picture tube.

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Answer:

A

Explanation:

Newton third law of motion state that action and reaction are equal and opposite

Answer:

Always true

Explanation:

I got it right on the test.

The two factors that can help determine air pressure are the temperature of the air and the cloud patterns in the air that are in options c and d, because wind speed and moisture content of the air are not direct measures of air pressure.

It depends upon the temperature, as when the temperature increases, air molecules gain energy and move faster, leading to a decrease in air pressure, and as the temperature decreases, there is an increase in air pressure. Some clouds are present at low air pressure, while others are at high air pressure.

Hence, the two factors that can help determine air pressure are the temperature of the air and the cloud patterns in the air that are in options c and d, because wind speed and moisture content of the air are not direct measures of air pressure.

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Answer:

True

Explanation:

A Reference point is stationary

Answer:

b.They include familiar metals such as gold, silver, copper, and nickel.

They include familiar metals such as gold, silver, copper, and nickel.

Transition metals are like main group metals in many ways: They look like metals, they are malleable and ductile, they conduct heat and electricity, and they form positive ions.

"A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile."

"Transition metals are placed between s−block and p−block elements in periodic table. They are termed as d-block elements. These metals are unstable and exhibit transitional behavior between s block and p block elements, hence the name transition metals."

"Electricity is defined as the rate of flow of charges in a conductor."

Electricity is defined as the effects of an electric charge. An example of electricity is the force that powers a light bulb. An example of electricity is lightning. An example of electricity is static electricity, the buildup of electric charges on an object's surface.

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Answer:

the things that eat, breathe, grow, move, reproduce and have senses is called living beings.

Answer:

Explanation: Because it was able to exhibit an electromagnetic property hence, it is transverse meaning that

each wave is perpendicular to the direction of propagation.

And recall that an Electromagnetic waves can travel through a vacuum.

The frictional force when the box has a constant velocity of 6 m/s is -30 N

We'll begin by obtaining the acceleration of the box. This can be obtained as follow:

Acceleration = velocity / time

Acceleration = 6 / 2

Acceleration = 3 m/s²

Next, we shall determine the net force on the box. This is shown below:

Net force = mass × acceleration

Net force = 14 × 3

Net force = 42 N

Finally, we shall determine the frictional force. Details below

Net force = Force applied - frictional force

42 = 12 - frictional force

Rearrange

Frictional force = 12 - 42

Frictional force = -30 N

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The most commonly released pollutant into waterways by families and individuals is domestic sewage.

Domestic sewage refers to wastewater that is generated from everyday household activities, such as bathing, washing dishes, and laundry.

This type of pollution primarily consists of organic waste, such as food particles, feces, and soaps, which can contain high levels of nutrients like nitrogen and phosphorus.

When discharged into waterways, these nutrients can contribute to eutrophication, a process that results in the excessive growth of algae and depletion of oxygen levels in the water. This, in turn, can lead to the death of aquatic organisms, loss of biodiversity, and deterioration of water quality.

Moreover, domestic sewage may also contain harmful substances, such as pharmaceuticals, personal care products, and cleaning agents, which can have adverse effects on aquatic ecosystems and human health if not treated properly.

To mitigate the impacts of domestic sewage pollution, families and individuals can take several steps, such as:

1. Properly disposing of waste: Avoid flushing non-degradable items down the toilet and discard fats, oils, and grease in the trash rather than down the sink.
2. Reducing water usage: Practice water conservation measures to decrease the amount of wastewater produced.
3. Using eco-friendly products: Opt for biodegradable and phosphate-free cleaning products and detergents to minimize the environmental impact.
4. Maintaining septic systems: Regularly inspect and pump septic systems to ensure their proper functioning and prevent leaks.
5. Supporting wastewater treatment: Advocate for adequate funding and implementation of wastewater treatment facilities in your community to ensure the proper treatment of domestic sewage before it is discharged into waterways.

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a) The relative atomic mass is 122.35

b) The Rutherford model produced the planetary model of the atom and laid the foundation for the Bohr model

c) The percentage abundance shows the most popular isotope.

We need to know that an element must be composed of the isotopes of the element. We have to know also that the isotopes of the element would all have the same atomic number but they would have different mass numbers for each of the elements that are under study.

We need to determine the average atomic mass of the element X as follows;

(121 * 0.432) + (123 * 0.531) * (129 * 0.037)

= 52.27 + 65.31 + 4.77

= 122.35

We can see that the calculation that we have made above has given the relative atomic mass of the isotope to be about 122.35.

Rutherford showed by experiment that at the core of the atom lies the nucleus around which the electrons evolve as planets round the sun hence the name planetary model. The furthered the ideas that led to the Bohr model of the atom.

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