Whats a cone of depression?

A. An area where one cave connects to another cave
B. An area where the water table slopes toward a well
C. An area where a cave collapses in on itself
D. An area where surface water reaches an aquifer

Answer:

it is the stance phase of running where the foot and leg serve as shock absorber

Answer.

Conduction

Convection

explanation.

Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. Both conduction and convection require matter to transfer heat. If there is a temperature difference between two systems heat will always find a way to transfer from the higher to lower system.

Answer:

15 μF

Explanation:

If two capacitors are in parallel, the equivalent capacitance is equal to the sum of the capacitances, so for the first two capacitors, we get:

C = 10 μF + 20 μF

C = 30 μF

Then, this capacitor C is in series with another capacitor of 30μF. For capacitor in series, we can find the equivalent as follows

Therefore, the answer is 15μF

We can use the formula of the capacitance

where C is the capacitance, Q is the charge and V is the voltage.

In our case

Q=480 C

V= 110 V

The value of the capacitor is 4.36 F

ANSWER B) 4.36F

Answer:

Correct answer is B.

Explanation:

The world's most ecologically diverse terrestrial ecosystems are tropical rainforests. The Amazon rainforest is the largest tropical rainforest on the planet. Around 40,000 plant species, approximately 1,300 bird species, 3,000 fish species, 427 animal species, and 2.5 million insect species call it home.In total around 100 thousand different plant and animal species can be found in tropical rainforests.

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The spring length is shorter when the elevator is moving down at a constant speed compared to when it is at rest.

When the elevator is at rest, the spring and the object are in equilibrium, and the weight of the object is balanced by the spring force.

The spring force F_s can be calculated using Hooke's law:

F_s = -kx

where k is the spring constant, x is the displacement from the equilibrium position, and the negative sign indicates that the force is in the opposite direction of the displacement.

In this case, when the elevator is at rest, the displacement x is 15 cm, or 0.15 m. Therefore, the spring force is:

F_s = -kx = -(830 N/m)(0.15 m) = -124.5 N

Since the elevator is moving at a constant speed, the net force on the object is zero. Therefore, the spring force must still balance the weight of the object.

The weight of the object W is given by:

W = mg

where m is the mass of the object and g is the acceleration due to gravity (9.81 m/s^2).

In this case, the mass of the object is 5.0 kg, so:

W = (5.0 kg)(9.81 m/s^2) = 49.05 N

Since the net force on the object is zero, the spring force must also be 49.05 N. Using Hooke's law again, we can find the displacement x of the spring when the elevator is moving at a constant speed:

F_s = -kx

49.05 N = -(830 N/m)x

x = -(49.05 N) / (830 N/m) = -0.059 m

The negative sign indicates that the spring is compressed by this amount compared to its equilibrium position. Therefore, the spring length with the object is 0.15 m - 0.059 m = 0.091 m, or 9.1 cm, when the elevator is moving at a constant speed.

So, the spring length is shorter when the elevator is moving down at a constant speed compared to when it is at rest.

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Gamma rays aren't deflected in a magnetic field because they are neutral particles and do not possess an electric charge.

Deflection in a magnetic field occurs due to the interaction between the charged particles and the magnetic field. However, gamma rays, which are high-energy electromagnetic radiation, do not carry an electric charge and therefore do not experience a magnetic force. As a result, they do not deflect when passing through a magnetic field.

Since gamma rays lack electric charge, they do not interact with magnetic fields and are unaffected by their presence. This property allows gamma rays to pass through magnetic fields without any deviation in their trajectory. Understanding the behavior of gamma rays in magnetic fields is important in various fields such as astrophysics, nuclear physics, and medical imaging, as it helps in the interpretation of experimental results and the development of appropriate shielding techniques.

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So, the amount of heat refracted from water as it freezes into ice is 146 J.

Specific latent heat is the amount of heat required to change the phase of a unit mass of a substance at a constant temperature. It is a specific quantity, meaning that it is defined for a particular substance and a particular phase change. The term "latent" refers to the fact that the heat is absorbed or released during the phase change, but does not result in a change in temperature of the substance. For example, the specific latent heat of fusion of ice is the amount of heat required to change 1 kilogram of solid ice at 0°C into 1 kilogram of liquid water at 0°C, without changing the temperature of the water. The SI unit for specific latent heat is joules per kilogram (J/kg).

Here,

To calculate the amount of heat refracted from water as it freezes into ice, we need to consider two stages:

Cooling the water from 10°C to 0°C:

The amount of heat lost by the water is given by:

Q1 = m * c * ΔT

where m = 0.5 kg is the mass of water, c = 4.2 J/(kg·°C) is the specific heat capacity of water, and ΔT = (0 - 10)°C = -10°C is the change in temperature.

Thus, Q1 = 0.5 kg * 4.2 J/(kg·°C) * (-10)°C = -21 J (Note that the negative sign indicates heat loss).

Freezing the water at 0°C into ice:

The amount of heat lost by the water is given by:

Q2 = m * Lf

where m = 0.5 kg is the mass of water, and Lf = 334 J/kg is the specific latent heat of fusion of ice.

Thus, Q2 = 0.5 kg * 334 J/kg = 167 J

Therefore, the total amount of heat refracted from water is:

Q_total = Q1 + Q2 = -21 J + 167 J = 146 J

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Answer:

40

Explanation:

1000 divided by 25 is 40

16 m/s² is the acceleration when a roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.

a=(v-u)/t

a=acceleration=?

v= final velocity = 70m/s

u=initial velocity = 6m/s

t=time= 4 second

a=(v-u)/t

a=(70-6)/4

a=16 m/s²

The rate at which an item changes its velocity is known as acceleration, a vector variable. If an object's velocity is changing, it is accelerating. A moving object can occasionally alter its velocity by the same amount every second. a moving object that changes its speed by 10 m/s per second. Since the velocity is changing by a fixed amount every second, this is known as a constant acceleration. It is important to distinguish between an item with a constant acceleration and one with a constant velocity. Be not deceived! An object is accelerating if its velocity is changing, whether by a fixed amount or a variable quantity. Additionally, a moving item with a constant speed is not accelerating.

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Answer:

B because acceleration due to gravity is 9.8 meter per second square

If the frequency of an X-ray is 7.4x10^18 hz then its wavelength will be 4.05x10^-11 meters.

The wavelength of an X-ray with a frequency of 7.4x10^18 Hz can be calculated by using the following formula.

We can use the formula: wavelength = speed of light/frequency.

X-rays travel at the speed of light, which is approximately 3.0x10^8 meters per second (m/s).

So, the wavelength of the X-ray would be:

wavelength = (3.0x10^8 m/s) / (7.4x10^18 Hz) ≈ 4.05x10^-11 meters.

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The time taken for the APUSH textbook to hit the ground is determined as 0.55 seconds.

The time of motion of an object is the time taken for the object to travel from its initial point to the final point.

The time taken for the APUSH textbook to hit the ground is calculated as follows;

t = √(2h/g)

where;

t = √(2 x 1.5/9.8)

t = 0.55 seconds

Thus, the time taken for the APUSH textbook to hit the ground is determined as 0.55 seconds.

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Cevabı bilmiyom arkadaşım benn türküm puan almak için cevap veriyorum hadi bbyy

Answer:

C. Do not write anything next to it.

Explanation:

If an equation is already balanced there is no need to provide information of that.

Answer:

In reality, the filament gets so hot it in a real sense bubbles off molecules and electrons. Now and again this material gathers as a dull spot at the highest point of the bulb. Eventually, the filament falls apart, gets frail, and breaks, subsequently finishing the life of the light. Lights radiate light by siphoning an electric flow through a dainty tungsten fiber. The filament warms and emits light. Over the long haul, the filament oxidizes and turns out to be increasingly fragile, until it splits up and the bulb goes out. ... Tungsten picks up obstruction as it warms.

Hope this helped :)

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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Explanation:

distance = speed x time

a- d= 350 m/s x 30s

   d= 10500m

b- 5 mins = 300 sec

    d= 350 m/s x 300s

    d= 105000 m

c-  30 mins = 1800 sec

    d= 350 m/s x 1800 s

   d=  630000 m

1) The number of photons in each beam is what determines the amount of energy each beam carries. A beam of red light contains more photons than a beam of blue light, but each photon in the blue beam carries more energy than each photon in the red beam. Therefore, the two beams can carry the same amount of energy despite having different energies per photon.

2) Reflecting telescopes have two advantages over refractors. They are cheaper to manufacture, and they do not suffer from chromatic aberration.

3) Refraction is the bending of light as it passes from one medium to another. Refraction occurs because light waves travel at different speeds through different materials. The amount of refraction depends on the angle at which the light passes through the medium.

4) The image of a star is larger in the focal plane of the larger telescope. This is because the larger telescope collects more light than the smaller telescope, which means that the image is brighter and has a higher signal-to-noise ratio.

5) Quantum efficiency is a measure of how efficiently a detector converts incoming photons into electrical signals. A higher quantum efficiency means that more of the incoming

photons are detected, which makes it easier to detect faint astronomical objects.

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1) The number of photons in each beam is what determines the amount of energy each beam carries.

2) Reflecting telescopes have two advantages over refractors.

3) Refraction is the bending of light as it passes from one medium to another.

4) The image of a star is larger in the focal plane of the larger telescope.

5) Quantum efficiency is a measure of how efficiently a detector converts incoming photons into electrical signals.

1) The number of photons in each beam is what determines the amount of energy each beam carries. A beam of red light contains more photons than a beam of blue light, but each photon in the blue beam carries more energy than each photon in the red beam. Therefore, the two beams can carry the same amount of energy despite having different energies per photon.

2) Reflecting telescopes have two advantages over refractors. They are cheaper to manufacture, and they do not suffer from chromatic aberration.

3) Refraction is the bending of light as it passes from one medium to another. Refraction occurs because light waves travel at different speeds through different materials. The amount of refraction depends on the angle at which the light passes through the medium.

4) The image of a star is larger in the focal plane of the larger telescope. This is because the larger telescope collects more light than the smaller telescope, which means that the image is brighter and has a higher signal-to-noise ratio.

5) Quantum efficiency is a measure of how efficiently a detector converts incoming photons into electrical signals. A higher quantum efficiency means that more of the incoming

photons are detected, which makes it easier to detect faint astronomical objects.

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Answer: concentration c = 25.2 g /(41.99 g/mol × 0.75 l)

Explanation: M(NaF) = 41.99 g/mol and amount of substance n = m/M.

Concentration c = n/V

What is the molarity (concentration) of 25.2 grams of NaF dissolved in a total volume of 0.75 liters is 0.8 mol/liter.

What is Molarity ?

Molarity shows the concentration of solute in the given solution. It is defined as no. of moles of solute present in 1 liter of solution. It is denoted by M. its SI unit is mol/L.

Hence, molarity is given by,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

Given,

mass of NaF = 25.2 g

Volume of the solution = 0.75 liters

Molarity = ?

Let's find No. of moles of the solute.

NaF has one Na and one F.

Molar mass of NaF is,

Na = 22.98*1 = 22.98

F = 18.99*1 = 18.99

Molar mass of NaF is 22.98+18.99= 41.97 g/mol

No. of moles of the solute is,

25.2g of NaF × (1÷41.97 ) mol/g = 0.6 mol.

Molarity of NaF is,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

M = 0.6 mol ÷ 0.75 liters

M = 0.8 mol/liter

Hence molarity of NaF is 0.8 mol/liter.

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The minimum angular separation of the sources that can be resolved by this system is approximately 0.00105 radians.

The minimum angular separation of sources that can be resolved by a radio telescope is determined by the telescope's angular resolution. The angular resolution of a telescope can be calculated using the formula:

θ = λ / D

where θ is the angular resolution, λ is the wavelength of the observed wave, and D is the diameter of the telescope.

In this case, the wavelength is given as 21 cm (0.21 m), and the diameter of the radio telescope is 200 m.

Substituting these values into the formula, we have:

θ = 0.21 m / 200 m = 0.00105 radians

Therefore, The minimum angular separation of the sources that can be resolved by this system is approximately 0.00105 radians.

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Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an 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 seconds 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;

\( P.E = 645 * 4.55 \)

\( P.E = 2934.75 J\)

Potential energy, P.E = 2934.75 Joules.

This is a defective question. It was WRITTEN by someone who is unclear on the concepts.  DON'T try and answer it.

It's trying to get us to use Newton's second law ... F = m • a.

But that only tells us how much force must act ON THE CAR in order to accelerate it. (45 kg) • (4 m/s^2) = 180 newtons.

This is NOT the force exerted BY the car when it hits something. THAT force depends on its speed WHEN it hits, AND how long it takes for the wreckage to actually come to rest, AND how hard or soft the wall is.

DON'T try to answer this question. Your answer will be wrong, you won't understand why, and the teacher you try to argue with probably won't either.

============================================

More explanation:

Think about jumping off of a ladder in your back yard.  Several times.

Your mass is the same every time.  Your acceleration is the same every time . . . 9.8 m/s² down, the acceleration of Earth gravity, every time.

BUT ...

-- I'll bet you would rather land on wood than on concrete. The force of landing would be less.

-- I'll bet you would rather land on dirt than on wood. The force of landing would be less.

-- I'll bet you would rather land on grass than on dirt. The force of landing would be less.

-- I'll bet you would rather land on a pile of blankets than on dirt. The force of landing would be less.

-- I'll bet you would rather land on a trampoline than on a pile of blankets. The force of landing would be less.

-- I'll bet you would rather jump from a short ladder than from a tall one.  Your speed would be less when you landed, and the force of landing would be less.

==> Your mass is the SAME every time, and your acceleration is the SAME every time.  But the force when you hit is DIFFERENT every time.

The mass and acceleration of the car DON'T tell us the force of the hit when the car hits a wall.  

Answer:

0.6amp or I= 0.6

Explanation:

V=IR

12V=I(20)

12/20=I

0.6=I

Answer:

0.6amp

Explanation:

The magnitude of the magnetic field at a distance r is given by 8 × 10^-6 T·m divided by r.

Ampere's law states that the line integral of the magnetic field around a closed loop is equal to the product of the current enclosed by the loop and the permeability of free space.
In this case, we have two parallel wires carrying currents of 14 A and 30 A. Let's consider a closed loop around the first wire. The current enclosed by this loop is 14 A. Applying Ampere's law, we have:
∮B⋅dl = μ₀ × 14 A
The left-hand side of the equation represents the line integral of the magnetic field around the loop. The right-hand side represents the product of the current and the permeability of free space, μ₀.
Since the wires are parallel and right next to each other, the magnetic field due to the first wire will be in the opposite direction to the magnetic field due to the second wire. Therefore, the net magnetic field at a distance r from the wire will be the difference between the magnetic fields due to the two wires.
Using the Biot-Savart law, we can find the magnetic field due to each wire at a distance r. The magnetic field due to a long, straight wire is given by:
B = (μ₀ × I) / (2π × r)
Plugging in the values, we get:
B1 = (μ₀ × 14 A) / (2π × r)
B2 = (μ₀ × 30 A) / (2π × r)
The net magnetic field Bnet at a distance r from the wire is the difference between B2 and B1:
Bnet = B2 - B1
Simplifying the equation, we have:
Bnet = [(μ₀ × 30 A) - (μ₀ × 14 A)] / (2π × r)
Bnet = (μ₀ × 16 A) / (2π × r)
Finally, we can substitute the value of the permeability of free space, μ₀, which is approximately 4π × 10^-7 T·m/A, to find the magnitude of the magnetic field Bnet at a distance r:
Bnet = (4π × 10^-7 T·m/A × 16 A) / (2π × r)
Bnet = (8 × 10^-6 T·m) / r

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The <input> element is used to mark the form controls that are designed to receive user responses.

The <input> element is a self-contained element in HTML that creates a form control widget. It can be used to create a wide variety of form controls, including text boxes, password fields, checkboxes, radio buttons, and many others.

By specifying different attributes on the <input> element, developers can customize the appearance and behavior of the form controls, such as setting a default value, defining a maximum length, or specifying a validation pattern.

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