An airplane tows a 2m tall advertising banner at a speed of 160 Km/hr. If the banner is flat and 5m long, then estimate its drag assuming fully turbulent flow. (µ = 1.8 x 10-5 N s/m2 rho = 1.2 kg/m3 )

The time it takes the heater of 50 W to melt the is 13400 seconds.

Time is the measured or measurable period during which an action, process, or condition exists or continues :

To calculate the time it will take the heater to melt the ice, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the time it takes the ice to melt is 13400 seconds.

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The work required to stop the car is 23,756 J

The work required to stop a car is equal to the amount of energy that the car has due to its motion. This energy is called the kinetic energy of the car. The kinetic energy of a car is calculated as the product of the mass of the car and the square of its velocity.

kinetic energy = 1/2 * mass * velocity²

The mass of the car is 1,168 kg and the velocity of the car is 24 km/hr. We will first need to convert the velocity from km/hr to m/s. To do this, we will multiply the velocity by 5/18. So, the velocity of the car is 24 * 5/18 = 6.667 m/s.

We can now calculate the kinetic energy of the car as follows:

kinetic energy = 1/2 * 1,168 * 6.667² = 23,756 J

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The air that is inside a ship is much less dense than water. That's what keeps it floating! ... The closer the total density of the ship is to the density of the same volume of water, the greater the amount of the ship that will be in the water.

Just divide the both, you will get the answer!

does it sound rude?

im sorry for that!

Answer:

10

Explanation:

Answer:

B. Because atoms want 8 valence electrons

Explanation:

Ions are formed because atoms want 8 valence electrons. Most atoms attain stability when they 8 electrons in their outermost shell.

This is the reason why they form ions.

The magnitude of torque produced is 25.5.

To find the magnitude of torque produced, you need to use the formula:

Torque = Force × Distance

Given:
Force = 150
Distance = 0.17m

Substitute the given values into the formula:

Torque = 150 × 0.17

Multiply the numbers:

Torque = 25.5

Therefore, the magnitude of torque produced is 25.5.

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The magnitude of torque produced is 25.5.

The magnitude of torque produced, you need to use the formula:

Torque = Force × Distance

Force = 150

Distance = 0.17m

Substitute the given values into the formula:

Torque = 150 × 0.17

Multiply the numbers:

Torque = 25.5

Therefore, the magnitude of torque produced is 25.5.

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the height of a bridge above the water, a person drops a stone and measures the time it takes for it to hit the water. if the time is 2.3 s, 26m is the height of the bridge.

initial velocity u = 0m/s

time taken t = 2.3 s

height of the bridge is H = ut + 1/2 g t²

= 0+ 1/2 *9.8 * ( 2.3 )²

= 25.9 m≅26m

A bridge is a structure that spans a physical obstacle, such as a body of water, a valley, or a road. Bridges are designed to provide a stable and safe passage for people, vehicles, and materials. The design of a bridge depends on the type of obstacle it spans, the traffic it carries, and the environmental conditions in the area. Bridges can be made of various materials, including wood, stone, concrete, and steel. The construction of a bridge requires careful planning, engineering, and execution. Many factors must be considered, such as the load capacity of the bridge, the effects of wind and water on the structure, and the impact on the environment. Bridges play a vital role in transportation, commerce, and tourism.

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The displacement of the ball is zero.

What is displacement?

The smallest distance between the initial and final position of an object.

What are the equations of motion?

There are three equations of motion that completely describes the motion of an object.

The first equation of motion gives the relationship between the initial velocity, final velocity, acceleration, and time.

The second equation of motion gives the relationship between the initial velocity, displacement, acceleration, and time.

The third equation of motion gives the relationship between the initial velocity, final velocity, acceleration, and displacement.

Given time, initial velocity, and acceleration, the displacement can be calculated using the second equation of motion. The second equation of motion is,

s=u*t+(1/2)*a*t^2

Here, u=25 m/sec, a=-25 m/sec and t=2.0 sec.

Put the values in the formula and calculate the displacement.

s= (25)*(2.0)+(1/2)*(-25)*(2.0)^2

s=50-50

s=0 m.

Hence the displacement of the ball is zero.

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After the physical change, the plastic will still retain its original properties, such as its chemical composition.

Chemical composition is the arrangement, ratio, and type of atoms in a particular molecule or compound. It is typically represented as a chemical formula, which indicates the types of atoms present in the compound and their ratios. Chemical composition is an important factor in determining the physical and chemical properties of a material, such as its solubility, boiling point, melting point, and other characteristics. The chemical composition of a material can be determined through a variety of laboratory tests, including spectroscopy, chromatography, and thermal analysis. Understanding a material’s chemical composition is critical for proper selection and use in a variety of applications.

However, its physical properties, such as its shape and volume, will be different. The plastic will now be in a solid form and its volume will be increased due to the expansion that occurs during the freezing process.

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Answer:

Because radiation does not require material medium for its propagation.

Explanation:

Radiation is one of the types of modes of heat transfer that takes place majorly in gases. Heat energy can be transferred through gases by radiation without heating up the intervening medium. Even, if the available molecules of gases are evacuated, the heat energy would propagate.

Thus, student's hands were not heated by convection since convection is a mode where material medium is required for propagation of heat energy.

Her hands are not heated by convection ​because radiation does not require material medium for its propagation.

 Radiation

Thus, student's hands were not heated by convection since convection is a mode where material medium is required for propagation of heat energy.

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Answer: x(t2)−x(t1) over the time interval [t1,t2]

Explanation: hope this helps

Answer:

b and you mom is cute so it's nice I'm here for points

The deteriorating level of consciousness is an indication for a client with a head injury that indicates increasing intracranial pressure.

Intracranial pressure is the pressure exerted by the cerebrospinal fluid inside the brain tissue. It indicates improper functioning of the brain. When this pressure increases, brain perfusion and oxygenation will decrease. It can also damage the neurological system in the body.

This further results in mental status like loss of consciousness, confusion, and disorientation of brain function. Other signs may also include severe headaches and vomiting also. If we neglect this situation it may lead to brain herniation which is a permanent life-threatening problem.

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Answer:

Scientists replicate other scientists' experiments to test if the result of the original investigations being tested should become a law, therefore, meaning if it should be generally accepted or discarded.

However, using different conditions than the conditions used in the original investigations is a method employed by scientists usually to:

1. Check if the values, equipment, used by the original investigations can give similar results if the values are lowered or increased and to also test if the result of the original investigations can be the same even if conditions are adjusted.

2. Check the accuracy of some experimental results especially when those original investigations are the first to speak about a new topic/finding. Definitely, other scientists would use different conditions to provide a broad knowledge and a general acceptance.

Galileo's investigation on the moon rejected popular beliefs of the content of the moon paved the way for further investigations by other astronauts. Galileo performed his investigations with equipment centuries back, coupled with the fact that his investigation didn't support an existing belief that paved the way for his investigation to be replicated by other astronauts.

The electron's potential difference as a result of displacement is roughly\(1.54 * 10^3 V\).

As per the question given,  

We can use the work-energy principle to find the potential difference of the electron as a result of the displacement. The work-energy principle states that the work done on an object is equal to the change in its kinetic energy. In this case, the electron starts from rest and moves under the influence of an electric field. The work done on the electron is equal to the change in its potential energy, which is given by:

ΔPE = qΔV

where q is the charge of the electron, ΔV is the potential difference, and ΔPE is the change in potential energy. The work done on the electron is also equal to the electron's final kinetic energy, which is given by:

KE = \((1/2)mv^2\)

where m is the mass of the electron and v is its final velocity. Since the electron starts from rest, its initial kinetic energy is zero.

The work done on the electron is given by:

W = ΔKE = \((1/2)mv^2 - 0\)

where W is the work done on the electron. We can use the work-energy principle to relate this work to the change in potential energy:

W = ΔKE = ΔPE = qΔV

Now we can solve for ΔV:

ΔV = \((1/q)(1/2)mv^2\)

We need to find the final velocity v of the electron. The force on an electron in an electric field is given by:

F = qE

where F is the force, q is the charge of the electron, and E is the electric field strength. The force on the electron is also given by:

F = ma

where a is the acceleration of the electron. We can equate these two expressions for the force and solve for the acceleration:

ma = qE

a = (qE)/m

The distance d that the electron moves is related to its final velocity v and the time t it takes to move that distance by the equation:

d = \((1/2)at^2\)

Solving for t:

t = √(2d/a)

Now we can use the acceleration to find the final velocity of the electron:

v = at = (qE/m)√(2d/a)

Substituting this expression for v into the equation for ΔV, we get:

ΔV = \((1/2)(q/m)(qE)^2d/a\)

Plugging in the given values, we get:

ΔV = \((1/2)(-1.6 * 10^-^{19 C} / 9.11 x 10^-^{31} kg)(-20 * 10^3 N/C)^2 (0.45 m) / (2 * 2 * 10^-^{3} m)\)

ΔV ≈\(1.54 * 10^3 V\)

Therefore, the potential difference of the electron as a result of the displacement is approximately 1.54 x 10^3 V.

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According to the given statement , the potential difference V across the resistor R is 3105 V.

To find the potential difference V, we can use Ohm's Law and the formula for the potential difference across a capacitor.

First, let's calculate the current flowing through the circuit. We are given that I = 2.5 A.

Next, we can calculate the total resistance in the circuit using the formula R = R₁ + R₂. Given that R₁ = 40 Ω and R₂ = 1202 Ω, we can calculate the total resistance:

R = 40 Ω + 1202 Ω = 1242 Ω

Now, we can calculate the charge stored in the capacitor using the formula Q = C * V, where Q is the charge, C is the capacitance, and V is the potential difference across the capacitor. We are given that Q = 18 μC and C = 3 μF. Plugging these values into the formula, we can solve for V:

18 μC = 3 μF * V
V = 18 μC / 3 μF
V = 6 V

Finally, we can calculate the potential difference V across the resistor R. Using Ohm's Law, we can use the formula V = I * R:

V = 2.5 A * 1242 Ω
V = 3105 V

So, the potential difference V across the resistor R is 3105 V.

In conclusion, the potential difference V across the resistor R is 3105 V.

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Explanation:

displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars. To qualify as a vector, a quantity having magnitude and direction must also obey certain rules of combination.

Answer:

\(300\) cm are equivalent to \(3\) m.

Explanation:

\(100\) cm are equivalent to \(1\) m.

\(100 \mathrm{~cm}$=1{~m}$\)

\(3 \mathrm{~m}$=3\times100\)

\(=$300{~cm}$\)

To convert meters (\(\mathrm{~m}$\)) into number of centimeters (\(\mathrm{~cm}$\)), multiply that number by \(100\).

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By using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

To measure the dominant frequency of vibrations in the flow around a flagpole using a hot wire anemometer, the following components are needed:

Flagpole: This is the main structure being investigated, with a known diameter of 20 cm and a Strouhal number (Sr) of 0.2.

Hot wire anemometer: The anemometer consists of a thin wire made of a temperature-sensitive material, such as platinum or tungsten. The wire is mounted in the flow and heated to a constant temperature using electrical current.

Signal conditioning circuitry: This circuitry is responsible for controlling the current passing through the wire and measuring the voltage across it.

Data acquisition system: This system records the electrical signal from the hot wire anemometer for further analysis.

The physical principle behind the hot wire anemometer is that as the flow velocity increases, it cools the heated wire, causing a change in its resistance. This change in resistance leads to a variation in the voltage across the wire, which is proportional to the flow velocity.

By measuring the dominant frequency of the flow using the hot wire anemometer, valuable information can be obtained.

In this case, if the measured frequency is f = 20 Hz, and the Strouhal number (Sr) is known to be 0.2, we can calculate the flow velocity (V) as follows:

V = Sr * f * d

where d is the diameter of the flagpole. Plugging in the values, we have:

V = 0.2 * 20 Hz * 0.2 m

V = 0.8 m/s

Therefore, the obtained information is that the flow velocity around the flagpole is 0.8 m/s.

In conclusion, by using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

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The second largest moon in our solar system is Titan.

It is the largest moon of Saturn and the only moon in the solar system with a significant atmosphere. It is also one of the few bodies in the solar system, other than Earth, where there is evidence of stable bodies of surface liquid.

The Cassini-Huygens mission was launched in 1997 and reached the Saturn system in 2004. This mission provided detailed observations of Titan, including radar images of its surface and measurements of its atmosphere and composition.

The second largest moon in our solar system, Titan is bigger than Mercury. Ganymede, a moon of Jupiter, is just somewhat bigger (by around 2%). Titan's atmosphere is primarily composed of nitrogen, just like Earth's, but it has a surface pressure that is 50% higher.

Titan has liquid hydrocarbons like methane and ethane in its rivers, lakes, seas, clouds, rain, and atmosphere. The greatest seas are hundreds of miles across and several hundred feet deep. More liquid—an ocean made primarily of water as opposed to methane—lies beneath Titan's thick water ice layer. Titan's subterranean water might support life as we know it, while its liquid hydrocarbon lakes and seas might support life that has a distinct chemistry.

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Answer:

shorter,higher

Explanation:

answer

64 is C (c) 1-Bromo-3-methylbutane

63 is D

i is secondary ii is primary

Answer:

The amount of potential energy stored in the magnetic field depends on both the strength of the magnet and the distance that another magnet or magnetic object is from it. ... All objects have a gravitational force, no matter how small, but only some objects such as iron objects can have a magnetic force.

Explanation:

The potential energy stored in the magnet/iron rod system is on the account of distance of each entities and the strength of magnets.

The given problem is based on the concept of potential energy stored in magnetic rod system.

Thus, we can conclude that the potential energy stored in the magnet/iron rod system is on the account of distance of each entities and the strength of magnets.

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A landscape that develops in a warm, rainy climate will most likely weather and erode faster, so the landforms are more rounded.

This is because in a warm, rainy climate, there is more water available to weather and erode the landforms. The water can penetrate cracks and crevices in the rocks, dissolve minerals, and carry away sediments. Over time, this can lead to the rounding of edges and the smoothing of surfaces, resulting in more rounded landforms.

In contrast, in a cool, dry climate, there is less water available to weather and erode the landforms. This can result in slower rates of erosion and less rounding of the landforms.

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Answer:

b

Explanation:

Answer:

40 m/s

Explanation:

To solve this problem, we can use the following kinematic equation:

\(\boxed{v = u + at}\),

where:

• v ⇒ final velocity = 0 m/s [as the ball stops moving when it reaches the highest point]

• u ⇒ initial velocity

• a ⇒ acceleration = -10m/s² [The value is negative as acceleration due to gravity is acting downwards but the ball is moving upwards]

• t ⇒ time taken = 4 s

Substituting the data into the equation above, we can calculate the initial velocity:

0 = u - 10 × 4

⇒ u = 40 m/s

Therefore, the ball was travelling at 40 m/s when it left the boy's hand.

Each Interior angle of a regular 45-gon is 172° and each exterior angle is 188°.

A polygon is defined as the closed 2-D shape with straight sides. For example a pentagon is the closed of 5 straight sides. Interior angle is defined as the angle subtended by two straight sides inside the traverse. Whereas exterior angle defined as the angle subtended by two straight sides outside the closed traverse. A 45-gon is closed traverse with 45 straight sides.

The sum of all the interior angles of a polygon is (2n-4)×90.

The sum of all the exterior angles of a polygon is (2n+4)×90

Where n number of straight sides.

So the sum of all interior angles of 45-gon is (2×45-4)×90 = 7740

Each interior angle is 7740/45 = 172°

So the sum of all exterior angles of 45-gon is (2×45+4)×90 = 8460

Each exterior angle is 8460/45 = 188°

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