if a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y

An electron’s position cannot be known precisely. only its probability of being in a certain location can be known as c.  the electron cloud model.

Electron cloud model was developed in the 1920s by Erwin Schrödinger and Werner Heisenberg, and it is based on the idea that an electron does not have a definite location, but rather exists in a probability distribution around the nucleus of an atom.

In the electron cloud model, the probability of finding an electron in a certain location is represented by a cloud-like shape around the nucleus. The denser the cloud, the greater the probability of finding an electron in that area. This model is different from the Bohr model, which depicts electrons as orbiting the nucleus in fixed, circular paths. The electron cloud model is also different from Einstein's model, which does not specifically address the position of electrons.

In summary, the electron cloud model is the model that describes an electron's position as a probability rather than a precise location. It is different from the Bohr model and Einstein's model, and it is based on the idea that an electron exists in a probability distribution around the nucleus of an atom.

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Answer:

the electron cloud model.

Explanation:

Small stars have a longer and less dramatic life cycle than large stars. They gradually expand and cool as they run out of fuel, eventually becoming white dwarfs. Large stars, on the other hand, go through a more explosive and shorter life cycle, culminating in a supernova that can create neutron stars or black holes.

Small and large stars have different life cycles because they have different masses, which affects their gravitational forces and the fusion processes that occur in their cores.

Here's a comparison of their life cycles:

Small Stars:

Protostar: A cloud of gas and dust collapses under its own gravity, forming a dense, hot core.

Main Sequence: Nuclear fusion of hydrogen in the core produces energy, which counteracts the force of gravity and keeps the star stable. This phase can last for billions of years.

Large Stars:

Protostar: A cloud of gas and dust collapses under its own gravity, forming a dense, hot core.

Main Sequence: Nuclear fusion of hydrogen in the core produces energy, which counteracts the force of gravity and keeps the star stable. This phase can last for millions of years.

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(a) The distance between you and the deer (you’re driving down the highway late one night at 20 m/s, when a deer steps onto the road 44 m in front of you) when you come to stop = 14 m.

(b) The maximum speed you could have and still not hit the deer = 25.80 m/s

The distance covered before to applying the brake = (20 x 0.5)

= 10 m

(v1² - v0²) = 2as

Where:

s = distance (m)

v = velocity

a = acceleration due to gravity (10 m/s²)

s = (0² - 20²) / (2 x 10)

= 20 m

(a) The distance between you and the deer:

44 - 30 = 14 m

So, the deer won't be struck by the car.

(b)

The maximum speed:

(v1² - v0²) = 2as

v1² = v0² - 2as

= (0² - (2 x (-10) x (44 - 0.5v0)

= 880 - 10 v0

v0 = 25.80 m/s

The question is incomplete, it should be:

You're driving down the highway late one night at 20 m/s when a deer steps onto the road 44 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10 m/s2.

Part A

How much distance is between you and the deer when you come to a stop?

Part B

What is the maximum speed you could have and still not hit the deer?

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The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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Answer:

4.18 joules of heat energy to raise a gallon of water by 1 degree celcius

Explanation:

Answer: 50°

Explanation:

Given the following :

Initial Velocity of bullet (U) = 87m/s

Time of travel (t) = 13.6s

Horizontal Distance traveled (S) = 760m

Therefore, the horizontal angle of projection of the bullet :

Using the second equation of motion:

S = ut + 0.5at^2

Where a = g = acceleration due to gravity, S = distance traveled, t= time taken and U = Initial Velocity.

The Angle of projection along the horizontal is represented as cosΘ

Acceleration due to gravity after the bullet has hit the ground = 0

Therefore, rewritten the equation :

S = ucosΘ * t + 0.5at^2

760 = 87 * Cosθ * 13.6 + 0.5(0)(13.6)^2

760 = 1183.2 * Cosθ + 0

Cosθ = 760 / 1183.2

Cosθ = 0.6423

Θ = cos^-1(0.6423)

Θ = 50.036460

Θ = 50°

Answer:

Flexibility is the ability of a joint or series of joints to move through an unrestricted, pain free range of motion. ... These soft tissues include: muscles, ligaments, tendons, joint capsules, and skin.

Explanation:

Answer:

yes,

Explanation:

because a compound contains two or more chemical elements chemically bond together.

Answer:

4E

Explanation:

From the question given above, the following data were obtained:

Initial elongation (e₁) = 4 cm = 4/100 = 0.04 m

Initial energy (E₁) = E

Final elongation (e₂) = 0.04 + 0.04 = 0.08 m

Final energy (E₂) =?

The energy stored in a s spring is given by:

E = ½Ke²

Where

E => is the energy

K => is the spring constant

e => is the elongation

From:

E = ½Ke²

Energy is directly proportional to the elongation. Thus,

E₁/e₁² = E₂/e₂²

With the above formula, we can obtain the final energy as follow:

Initial elongation (e₁) = 0.04 m

Initial energy (E₁) = E

Final elongation (e₂) = 0.08 m

Final energy (E₂) =?

E₁/e₁² = E₂/e₂²

E / 0.04² = E₂ / 0.08²

E / 0.0016 = E₂ / 0.0064

Cross multiply

0.0016 × E₂ = 0.0064E

Divide both side by 0.0016

E₂ = 0.0064E / 0.0016

E₂ = 4E

Therefore, the final energy is 4 times the initial energy i.e 4E

Answer:

A

Explanation:

Amplitude = height of the wave = 1

Wavelength = 3

They are slightly shifted.

The first statement is the correct one.  Don't make me type the whole thing out.

If you did 3x18 this would equal 54

Answer:

true!!

Explanation:

Stretching should not hurt when you do it. If you start to feel pain when performing a stretch, you are probably going further then you need to, and your body is letting you know. :D

Answer:

Because Moon and Mars has no atmosphere.

Explanation:

Moon and Mars has no atmosphere, so there is no friction on the falling object due to the atmosphere. The speed of the falling object is more at Moon and Mars.

When a small object impact on the surface of moon or Mars with high speed, the size of crater is large than the earth as out earth has atmosphere.

It was a big occasion for Jonas when he was able to notice the shift in the apple because it was the first time he had ever encountered something new or different. This event signalled the start of Jonas's awakening to the world of colour, emotion, and uniqueness that had previously been denied to him and his community.

Jonas in Lois Lowry's novel "The Giver" was unable to detect the slow shift in the colour of the apple, and in fact, he had never witnessed any changes in his world before, because his society had erased all colours from their environment.

Jonas's neighbourhood was devoid of colour, variation, or diversity. There were no unique or individual differences, and everything was the same. Colours, emotions, and memories had been eradicated in an attempt to create a world that was perfectly organised and predictable.

As a result, the residents of this village were not only unable to experience life's joys and tragedies, but they were also unable to detect any changes in their surroundings.

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Newton's third law states that if an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

Let:

A = Hammer

B = Nail

so:

Therefore:

The hammer exerts a force on the nail; the nail exerts a force on the hammer.

Answer:

A) Force=1680 Newton

S(displacement)= 50.0m

Work=?

Work=F*S

Work= force×displacement

Work= 1680×50

Work=84000 joules.

Answer:

jnehcdbyhecerhcbchfbc

Explanation:

very good fatir bro

a) The velocity function v(t) is given by v(t) = -100 + 10t, b) The acceleration function a(t) is given by a(t) = 10, c) The velocity is v(3) = -70 fps, and the acceleration is a(3) = 10 feet per second squared.

a) To find the velocity function, we take the derivative of the distance function s(t) with respect to time t. The derivative of s(t) = 80 - 100t + 5t^2 is v(t) = s'(t) = -100 + 10t. The units of velocity are feet per second.

b) The acceleration function is obtained by taking the derivative of the velocity function v(t). Since v(t) = -100 + 10t, the derivative of v(t) is a(t) = s"(t) = 10. The units of acceleration are feet per second squared.

c) To find the velocity and acceleration when t = 3 seconds, we substitute t = 3 into the respective functions. For velocity, v(3) = -100 + 10(3) = -70 feet per second. For acceleration, a(3) = 10 feet per second squared.

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The  mass of the large truck is determined as 5680 kg.

The mass of the truck is calculated as follows;

P = mv

where;

m = P/v

m = 125000/22

m = 5680 kg

Thus, the  mass of the large truck is determined as 5680 kg.

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Answer:

C. 5680

Explanation:

edg2023

The Acceleration of the system is 6.41 m/s².

Given,

α= 15°, m₁ = 7kg

β= 65°, m₂ = 11 kg

Let, a be the acceleration and T is the tensions at the end it's the cord.

Let, the mass m₂ be coming down along the inclined plane along the inclined surface towards downward m₂g sin β and the tension in the upward direction,

Resultant force, m₂a=m₂g sin β -T

11a=((11) ×g sin 65°) -T  ...(i)

Now, considering the motion of m₁ which moves downwards, the forces are m₁g sinα, and T both are acting downwards.

Resultant force m₁a = m₁g sin α+T

7a =7g sin 15°+T  ...(ii)

Solving both the equations by adding them,

18a=11gsin 65°+7g sin 15°-T+T

18a=11gsin 65°+7g sin 15°=115.45

a=115.45/18=6.41 m/s²

Hence, the Acceleration of the system is 6.41 m/s².

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Answer:

I HAD THE SAME QUESTION AND SEARCHED IT UP AND GOT THE ANSWERS.

Explanation:

Answer:

The magnetic field at point P midway between the two wires is zero. This is because the magnetic fields produced by the two wires are equal in magnitude but opposite in direction, so they cancel each other out at point P.

Explanation:

Answer:

5730 yr

Explanation:

25  = 100 (1/2)^11460/x       where x = half life

.25 = (1/2)^11460/x

log .25 / log.5   = 11460/x

x = 5730 yr

Temperature measures the average kinetic energy of the atoms in a substance.

Temperature is a measure of the average kinetic energy of the particles (atoms or molecules) within a substance. Kinetic energy is the energy associated with the motion of particles. As temperature increases, the particles move faster, resulting in an increase in their kinetic energy. Conversely, a decrease in temperature causes the particles to slow down, reducing their kinetic energy. The kinetic energy of individual particles may vary, but temperature provides an indication of the average kinetic energy across the substance. Therefore, temperature serves as a useful metric for comparing the thermal energy content or "hotness" of different substances.

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The wavelength of a wave is given by the velocity of the wave divided by the frequency:

λ = v / f

where v is the velocity of the wave (3.00 × 108 m/s) and f is the frequency (9.23 × 107 Hz). Plugging in the given values:

\(λ = 3.00 × 10^8 m/s / 9.23 × 10^7 Hz = 3.25 m\)

So the answer is C. 3.25 m

Wavelength is a measure of the distance between two consecutive peaks or troughs of a wave. It is a characteristic property of a wave and determines its type (e.g. light wave, sound wave, etc.).

Wavelength can be calculated using the following formula:

λ = v / f

where λ is the wavelength, v is the velocity of the wave and f is its frequency. The velocity of the wave depends on the medium through which it is propagating (e.g. air, water, vacuum, etc.), while the frequency is a measure of the number of complete cycles of the wave that occur in one second.

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Polymer flooding is a tertiary recovery technique used in the oil and gas industry to enhance oil recovery from reservoirs.The mechanisms of polymer flooding involve:

By injecting a polymer solution into the reservoir, more oil is swept toward the production wells, and the displacement efficiency of the injected fluid is increased. The theory and mechanisms of polymer flooding can be described as follows:

Therefore, Polymer flooding is a tertiary recovery technique used in the oil and gas industry to enhance oil recovery from reservoirs. The mechanisms of polymer flooding involve:

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Answer:

(This will depend on the type of fuel, I will assume that the fuel is petrol)

First, let's find the expected energy consumption in the US for the next 10 years.

We know that in one year, a person consumes 3.5*10^11 joules.

There are 310,000,00 people on the US

Then the total consumption in one year is:

310,000,000*3.5*10^11 joules = 1.085*10^20 J

In 10 years the consumption is 10 times the consumption of a single year, then the expected energy consumption in the US for the next 10 years is:

10*1.085*10^20 J = 1.085*10^21 J

Now let's find the mass of fuel required.

We know that a liter of petrol has 31,536,000 joules of energy,

And a liter of petrol weights 0.75 kg

To find the number of liters of petrol that we need, we need to find the quotient between the expected energy consumption in the next 10 years and the energy of a single liter of petrol, this is:

N = (1.085*10^20 J)/(31,536,000 j) = 3.44*10^13

We will need  3.44*10^13 liters of petrol.

And the total mass of petrol will be:

M = 3.44*10^13*0.75 kg = 2.58*10^13 kg of fuel.

Answer:

it is correct

Explanation:

Though no rounded numbers can be defined as accurate, if we were going by people's discovery, and research, we can define that the number, g = 9.8m/s^2, is accurate

Ranking from shortest to longest wavelength of radiant energy emitted: A light bulb with a filament glowing at 4000°C, a car engine at 140°C, and a rock at room temperature.

Ranking the following according to the wavelength of radiant energy emitted, from the shortest wavelength to the longest:

The shortest wavelength:

1. A light bulb with a filament glowing at 4000°C

A light bulb with a filament glowing at 4000°C emits visible light, which corresponds to a range of wavelengths in the electromagnetic spectrum.

As the temperature increases, the filament emits shorter-wavelength visible light, including blues and violets, which have relatively shorter wavelengths compared to other sources.

2. A car engine at 140°C

A car engine at 140°C emits thermal radiation in the infrared region of the electromagnetic spectrum. Infrared radiation has longer wavelengths than visible light. While the exact spectrum of an engine's thermal radiation depends on various factors, the emitted wavelengths are generally longer than those emitted by a glowing filament in a light bulb.

The longest wavelength:

3. A rock at room temperature

A rock at room temperature primarily emits thermal radiation in the far-infrared range, commonly referred to as "heat radiation."

The wavelengths of this radiation are longer than both visible light and the infrared radiation emitted by a car engine. As a result, the rock's thermal radiation has the longest wavelengths among the three sources listed.

In summary, the ranking from shortest to longest wavelength of radiant energy emitted is: A light bulb with a filament glowing at 4000°C, a car engine at 140°C, and a rock at room temperature.

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The velocity of a golf ball with a mass of 47 g and the kinetic energy of a golf ball is measured to be 143 J is 2.44 m/s.

The kinetic energy is the energy obtained when the body is in motion. The kinetic energy equals half of the product of mass and the square of the velocity of the object. The velocity is a vector quantity that defines the speed with a particular direction and the unit of velocity is m/s. The unit of kinetic energy is Joule (J).

From the given,

the mass of a golf ball = 47 g = 0.047 kg

the kinetic energy = 143 J

the velocity of a golf ball =?

K.E = 1/2 (mv²) where m is the mass and v is the velocity.

v² = 143×2 / 0.047

   = 286 / 0.047

  = 6085.10

v² = 6085.1

v = √6

  = 2.44

v = 2.44 m/s.

Thus, the velocity of a golf ball is 2.44 m/s.

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