A satellite orbiting the earth is directly over a point on the equator at 12:00 midnight every two days. It is not over that point at any time in between. What is the radius of the satellite's orbit?

Crest is the part of the wave which does this.

A sound wave is the sample of disturbance resulting from the movement of strength visiting through a medium, including air, water or every other liquid or stable remember as it propagates far from the supply of the sound.

The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. The sound source creates vibrations in the surrounding medium. because the supply continues to vibrate the medium, the vibrations propagate far from the supply at the rate of sound, hence forming the sound wave.

A sound wave is not a transverse wave with crests and troughs, however alternatively a longitudinal wave with compressions and rarefactions.

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Answer:

1 atm = 1.01E5 nt/m^2 = 1.01E5 pascals

5.05E5 nt/m^2 = 5.05E5 pascals

1 pascal = 1 nt/m^2

Jackson sells lemonade for $2 per cup. he paid $20 for supplies to sell 5 cups. What is the domain for this scenario

The thermal conductivity of the metal is approximately B, 241 W/(m · K).

To find the thermal conductivity (k) of the metal, use the formula:

Q = k × A × (ΔT/Δx) × t

Where:

Q = Heat conducted by the rod (in Joules)

A = Cross-sectional area of the rod (in square meters)

ΔT = Temperature difference across the rod (in Kelvin)

Δx = Length of the rod (in meters)

t = Time (in seconds)

Given:

Q = 8.5 g of ice melted = 8.5 × Lf (latent heat of fusion of ice)

Lf = 3.34 × 10⁵ J/kg

Δx = 60 cm = 0.6 m

A = 1.25 cm² = 1.25 × 10⁻⁴ m²

t = 10 min = 600 seconds

ΔT = (100°C - 0°C) = 100 K

Substituting the given values into the formula:

8.5 × Lf = k × (1.25 × 10⁻⁴) × (100 K / 0.6 m) × 600 s

Simplifying the equation:

k = (8.5 × Lf) / [(1.25 × 10⁻⁴) × (100 K / 0.6 m) × 600 s]

Calculating the value:

k = (8.5 × 3.34 × 10⁵) / [(1.25 × 10⁻⁴) × (100 / 0.6) × 600]

k ≈ 241 W/(m · K)

Therefore, the thermal conductivity of the metal is approximately 241 W/(m · K).

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We are given the vector v = -12i + 19j, and we are required to find its magnitude and direction angle.Step-by-step solution:Given vector is, v = -12i + 19jWe can find the magnitude of vector v using the Pythagorean theorem, i.e.,  v = √((-12)² + 19²)

Using a calculator, we get,v ≈ 22.455So, the magnitude of vector v is approximately equal to 22.455.Now, to find the direction angle of vector v, we need to first find its angle with respect to the positive x-axis. This can be done using the formula:θ = tan⁻¹(y/x)θ = tan⁻¹(19/-12)θ ≈ -56.31°

Since this angle is measured in the clockwise direction from the positive x-axis, we need to add 360° to it to get the angle measured in the counterclockwise direction from the positive x-axis.θ = 360° - 56.31°θ ≈ 303.69°Hence, the direction angle of vector v is approximately equal to 303.69° (rounded to one decimal place).Therefore, the magnitude of the vector v is ≈ 22.455, and its direction angle is ≈ 303.69°.

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Answer As a wave travels across the open ocean, it gains speed. When a wave reaches a shallow coastline, the wave begins to slow down due to the friction caused by the approaching shallow bottom. ... Think of it like driving a car at high speed and then slamming on the breaks. Everything is going to fly to the front.:Waves at the Shoreline: As a wave approaches the shore it slows down from drag on the bottom when water depth is less than half the wavelength (L/2). The waves get closer together and taller. ... Eventually the bottom of the wave slows drastically and the wave topples over as a breaker. hope this helps have a nice night❤️❤️❤️

Explanation:

450 j of work are done on a gas in a process which decreases the thermal energy by 200 j . 250 J heat energy is transferred to or from the system

In this situation, we can use the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
ΔU = Q - W

Energy cannot be generated or destroyed but can only be changed from one form to another, according to the rule of conservation of energy.
We know that the work done on the gas is 450 J, and that the thermal energy of the gas decreases by 200 J. Therefore, the change in internal energy of the gas is:
ΔU = -200 J
To find the heat transferred, we can rearrange the equation above:
Q = ΔU + W
Substituting the values we know, we get:
Q = -200 J + 450 J = 250 J
Therefore, 250 J of heat energy was transferred to the system.

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250 J of heat energy is transferred out of the system.

In this scenario, 450 J of work is done on the gas, which means that energy is transferred to the system. However, the thermal energy of the system decreases by 200 J, which indicates that heat energy is being transferred out of the system. This means that the remaining energy, which is the difference between the work done and the change in thermal energy, must be the amount of heat energy transferred out of the system.
Therefore, the amount of heat energy transferred out of the system can be calculated by subtracting the decrease in thermal energy from the work done:
Heat energy = Work done - Change in thermal energy
Heat energy = 450 J - 200 J
Heat energy = 250 J

So, 250 J of heat energy is transferred out of the system.

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The maximum speed the car could round the curve with a reduced coefficient of static friction is approximately 19.8 times the square root of the original coefficient of static friction.

Part A:

The maximum speed at which the car can round the curve without skidding can be determined using the centripetal force equation:

F = (mv^2) / r

Where:

F is the centripetal force,

m is the mass of the car,

v is the velocity of the car, and

r is the radius of the curve.

Since the car is on the verge of skidding out, the centripetal force is equal to the maximum static friction force:

F_friction = μ_s * m * g

Where:

μ_s is the coefficient of static friction,

m is the mass of the car, and

g is the acceleration due to gravity.

Setting these two forces equal, we can solve for the maximum velocity:

(μ_s * m * g) = (m * v²) / r

Rearranging the equation, we can solve for v:

v² = (μ_s * g * r)

Taking the square root of both sides, we find:

v = √(μ_s * g * r)

To find the maximum speed with a reduced coefficient of static friction (μ_s/2), we substitute this value into the equation:

v_max = √((μ_s/2) * g * r)

Calculating the value:

v_max = √((0.5 * μ_s) * g * r)

v_max = √(0.5 * μ_s * 9.8 * 240)

v_max ≈ 19.8 * √(μ_s)

Considering two significant figures, the maximum speed with the reduced coefficient of static friction is approximately 19.8 times the square root of μ_s.

Part B:

Similarly, we can find the maximum speed with an increased coefficient of static friction (2μ_s) using the same equation:

v_max = √((2μ_s) * g * r)

Calculating the value:

v_max = √(2 * μ_s * 9.8 * 240)

v_max ≈ 44.3 * √(μ_s)

Considering two significant figures, the maximum speed with the increased coefficient of static friction is approximately 44.3 times the square root of μ_s.

The maximum speed the car could round the curve with an increased coefficient of static friction is approximately 44.3 times the square root of the original coefficient of static friction.

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Yes, an airfoil can fly upside-down. To calculate the lift coefficient of a positively cambered airfoil with a zero-lift angle of -2° at an angle of attack of 6º, we use the lift slope of 0.1 per degree.

a/ The lift coefficient at 6º angle of attack would be 0.1 x (6-(-2)) = 0.8

b/ When the same airfoil is turned upside-down, the lift coefficient at the same 6° angle of attack would still be 0.8 because the lift coefficient only depends on the angle of attack and the shape of the airfoil, not its orientation.

c/ To generate the same lift as when the airfoil is right-side-up at a 6° angle of attack, the upside-down airfoil must be set to an angle of attack of -6º because the lift coefficient is proportional to the angle of attack.

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When there is current flowing through the apparatus or electrical circuit and the source voltage or source battery experiences a voltage drop, internal resistance is present.

The voltage across the ideal voltage source is equal to the voltage at the terminals when there is no current flowing to an external resistance. However, there will be a voltage drop across the internal resistance when current leaves the cell, which will reduce the voltage at the cell's terminals.

The electromotive force within a cell is always greater than the potential difference between neighboring cells. Thus, variables like the distance between the electrodes, their effective area, temperature, and solution concentration affect a cell's internal resistance.

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Answer:

A person climbs a set of stairs

Explanation:

Potential energy is said to be possessed by an object due to its position. As the height from the ground level increase, the potential energy increases. It is calculated by the below formula as :

P = mgh

Out of the given options, the option that illustrates an increase in potential energy is option (b) i.e. a person climbs a set of stairs. As he steps one stair, its position from ground increases. It means its potential energy increases.

The environment was quite different. Based on the sediment in the rock sample (photograph X), it is likely that this area was once covered by a shallow sea or ocean. The presence of fine-grained sediment, such as silt and clay, suggests that the water was relatively calm and quiet.

About 290 million years ago, during the Paleozoic era, Kansas was covered by a shallow sea known as the Permian Sea. The sedimentary rocks found in Kansas, including limestone, sandstone, and shale, were deposited in this sea over millions of years.

The environment in which sediment is deposited can provide clues about the conditions of the area at the time. Based on the type of rock you mentioned, it is likely that the sediment was deposited in a marine environment, such as a shallow sea or a shoreline. The limestone could have been formed from the accumulation of shells and other organic material from marine organisms, while the sandstone and shale could have been deposited by erosion and transport of sediment from nearby land.

In terms of the landscape, it is possible that the area that is now Kansas was a low-lying coastal plain, with rivers and streams carrying sediment into the sea. The rolling hills and farm fields seen today are a result of more recent geologic processes, such as erosion and deposition by wind and water.

Overall, the sediment in the rock sample you mentioned was likely deposited in a marine environment in what is now Kansas, during the time period of the Permian Sea.

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In a parallel RLC circuit, the resistive current is in phase with the voltage.

In a parallel RLC circuit, the current is determined by the resistance, inductance, and capacitance. The current flowing through the resistor is in phase with the voltage, meaning that the maximum current and the maximum voltage occur at the same time. This is because the resistance does not introduce any phase shift between the voltage and current. On the other hand, the current flowing through the inductor leads the voltage by 90 degrees, and the current flowing through the capacitor lags the voltage by 90 degrees. Thus, the resistive current is in phase with the voltage, meaning that when the voltage is at its maximum, the resistive current is also at its maximum, and vice versa.

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Answer:

I would assume that the box slows down due to the frictional force between the floor and the box. In addition, the frictional force points opposite of the boxes motion. As we know, the box was given an initial speed, therefore, having an applied force. Hence, we can conclude that  the frictional force opposing the motion of the crate is equal to the applied force but acting in the opposite direction. This frictional force is called static friction. When we increase the applied force (push harder), the frictional force will also increase until it reaches a maximum value.

Hope that helps!

Answer;

Newton's laws models the motion of a body perfectly well.

The knowledge of the force acting on a body gives a good grasp of the resulting  motion.

There are three know laws of motion postulated by Newton;

 1st law; it states that an object will remain in its state of rest or uniform motion unless if it is acted upon by an external force.

 2nd law: it states that the acceleration of a body depends on the mass and force acting on it.

3rd law: it states that action and reaction are equal and opposite.

A sound understanding of these law's can help predict and model the motion of a body .

The new and existing aquatic organisms thrive during the Mesozoic era for oceanic expansion, warm climate, abundant food and Evolutionary innovations

The Mesozoic era, which lasted from about 252 million years ago to 66 million years ago, was a time of great change in the Earth's climate and geography. During this period, new and existing aquatic organisms thrived due to several factors:

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Below is a list of the wavelengths in order of shortest to longest from left to right. Radiation comes in many different forms, including gamma rays, X-rays, UV, visible, infrared, microwaves, and radio waves.

The electromagnetic spectrum is made up of a wide variety of waves that are created when the electric field and magnetic field interact. It is believed that electromagnetic waves exhibit both wave and particle characteristics.

In essence, the photons—particle-like elements that make up electromagnetic waves and convey their energy, the wavelength and frequency of the waves. The class of electromagnetic waves is referred to as the "electromagnetic spectrum."

Electromagnetic waves are classified according to increasing wavelength: gamma rays, x-rays, ultraviolet, visible, infrared, microwaves, and radio waves.

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The wavelength of the incident light is approximately 314 nanometers.

The energy of a photon of light is given by:

E = hc/λ

where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the light.

In photoelectric emission, the energy of the incident photon must be greater than or equal to the work function (ϕ) of the metal in order for an electron to be ejected. The energy of the ejected electron is given by:

K = E - ϕ

where K is the kinetic energy of the electron.

In the case of the stopping potential (V_stop), the kinetic energy of the ejected electrons is equal to the potential energy required to stop them, so we have:

K = eV_stop

where e is the elementary charge.

Combining these equations, we get:

E = K + ϕ = eV_stop + ϕ

Substituting the values given in the problem, we get:

hc/λ = eV_stop + ϕ

(6.626 ×  J s) × (3.00 × \(10^8\) m/s) / λ = (1.602 × 10⁻¹⁹ C) × (7.5 V) + (3.1 eV) × (1.602 × 10⁻¹⁹ J/eV)

λ = hc / (eV_stop + ϕ)

λ = (6.626 ×10⁻³⁴ J s) × (3.00 × \(10^8\)m/s) / [(1.602 ×  10⁻¹⁹ C) × (7.5 V) + (3.1 eV) × (1.602 × 10⁻¹⁹J/eV)]

λ = 3.14 ×10⁻⁷ m

So the wavelength of the incident light is approximately 314 nanometers.

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The reflecting wave flips upside-down on a stretched string when the wave moves from a less dense part of the rope moves toward a boundary that has a higher density. Hence the correct answer is (Option E).

A reflecting wave is a wave that abruptly changes its propagation direction when it hits the boundary between two media.

An echo is a real-world example of a reflecting wave.

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The average lifetime of a free neutron outside a nucleus is approximately 14 minutes and 42 seconds.

Neutrons are unstable particles, and when they exist outside the atomic nucleus, they undergo beta decay, where a neutron decays into a proton, electron, and an antineutrino.

The average lifetime of a free neutron is determined by the decay process. On average, it takes around 14 minutes and 42 seconds for half of a large group of free neutrons to decay. This time period is known as the neutron's mean lifetime.

It is important to note that the lifetime of a free neutron can vary slightly depending on experimental conditions, but the average value remains close to 14 minutes and 42 seconds.

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Answer:

A) Conduction

Explanation:

The mitt keeps the heat from reaching your hand through conduction

Answer: A.conduction

Explanation: i got it right on my test!

Answer: Force required to 25 joule work when the force causes a displacement of 0.5m is 50N

Explanation: To calculate the work done we use the formula

W=F.s                               (1)

W= work done

F=  force applied               s= displacement

Given, work done W= 25 joules= 25 J

displacement s= 0.5m

∴From equation (1) we get the force required when work is done and displacement is given, that is

F\(=\frac{W}{s}\)                                (2)

∴Force required \(F=\frac{W}{s}= \frac{25J}{0.5m}=50N\)            

(1 J is the work done by a force of 1 N acting over a displacement of 1 m and so 1 J= 1 Nm⇒ 1 N = 1 J/m)

ANS: Force required to do 25 J work when a force causes displacement of 0.5m = 50 N

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Answer:

yes

Explanation:

All Motion is relative to a reference point. Object appears to move whether object moves, the reference point moves, or both move. is the distance traveled by an object over the period of time in which it moved. Ex - a racecar driver completes a three-mile lap in 60 seconds.

The statement "All Motion is relative to a reference point." is True.

An inertial frame of reference is a frame of reference in which the Newton's laws are valid. In this frame of reference, the objects do not accelerate without any external force. All frames of reference moving with constant velocity are considered stationary.

In a non-inertial frame of reference, the Newton's laws will not work. They are moving with an acceleration.

All Motion is relative to a reference point. Object appears to move, the reference point moves, or both move is the distance traveled by an object over the period of time..

Thus, the statement "All Motion is relative to a reference point." is True.

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Answer:Work is a measurement of energy.

Power is a measurement of energy per time.

So, power measures how fast work is done.

If we raise 1kg up to a height of 1 meter it takes a certain amount of work. It doesn't matter if it takes us 1 second or 1 hour to raise it. It takes more power, energy per second, to raise it in 1 second than to raise it in one hour.

An engines power rating is in horsepower. A higher horsepower car engine will get a certain car up a hill more quickly than if it had a lower horsepower engine. Even though both engines did the same amount of work in getting the car up the hill

Answer:

work is a measurement of energy, but power is how much energy it takes. Two people could do the same amount of work. Sally and James. James may finish his work in 2 days due to the amount of power he puts in, but it may take Sally a week.

Answer:

Option A

Explanation:

If the graph plotted against Distance and Time and the graph is a linear straight line then the body is IN CONSTANT VELOCITY.And Acceleration is 0

My special whistle works by creating different types of waves with varying frequencies and pitches.

When I blow into the whistle, it produces sound waves in the form of longitudinal waves. These waves have a high frequency, meaning that the vibrations of the sound waves occur rapidly.

The pitch of the whistle is also high, so the sound carries far. By consistently blowing the whistle, Bandit should be able to hear it from a distance.

I also use the whistle to create a unique pattern of sound waves. The pattern is made up of a series of short and long whistles, each with its own frequency and pitch. This pattern is designed to catch Bandit’s attention and help him locate me. I can also use the whistle to call out his name and encourage him to come back home.

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Answer:

Given

acceleration (a) =1.5ms2

Force(F) =2100N

R. t. c mass (m) =?

Form

F=ma(divided by m both sides)

m=F/a

m=2100/105

m=1400kg

mass of car =1400kg

Answer:1400kg

Explanation:

Answer:

mechanic and potential?

Explanation: