for the following exothermic reaction at equilibrium: h2o (g) co (g) co2(g) h2(g) decide if each of the following changes will increase the value of k (t = temperature)

Answer:

D

Explanation:

because the glaciers melt adding more water into the sea which make the sea levels rise.

Answer:

Sorry for being late. Hope this helps

Explanation:

The formula to calculate the file size of an audio file is: File size = sample rate x bit depth x number of channels x duration in seconds.

Given that an audio signal is sampled at a rate of 1024 Hz, we can calculate the file size of such an audio file with the formula above. For a stereo type audio file, we have 2 channels. Radio quality audio files typically have a bit depth of 16 bits.

To calculate the duration in seconds for a 1 minute audio file, we have to multiply 1 minute by 60 seconds, which is equal to 60 x 1 = 60 seconds. File size = 1024 x 16 x 2 x 60 = 1,572,864 bits or 196,608 bytesTherefore, the file size of a stereo type but radio quality audio file with a duration of 1 minute and sampled at a rate of 1024 Hz is 1,572,864 bits or 196,608 bytes.

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When rain is falling vertically at 8m/s then the speed of the car is calculated to be 4.618 m/s.

The velocity of the raindrops adds to the velocity of the car to produce a velocity of the rain relative to the car.

As the surface becomes rougher, friction increases and on rainy days, we are more likely to slip because water acts as a lubricant between feet and the ground. Dry friction is converted to fluid friction by rainwater.  Rain drops have a uniform type of motion

Given rain is falling vertically with 8 m/s speed

and rain drop makes an angle of  30°

As we know that, tan∅ = V (horizontal) / V (vertical)

Hence,  V (horizontal)= tan ∅ *  V (vertical)

= tan (30° ) * 8

speed of the car​ = 4.618 m/s.

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7.26 x 10-5 rad/sec

The angle of one rotation is 2π. The time required for this rotation is 24 hours to calculate the angular speed of the Earth as it rotates completely around its own axis. Average Angular Velocity Wav is the average rate of change of angular displacement.

On converting the hours into seconds we get,

Time = 24 hr x 60 min/hr x 60 sec/min = 86400 sec

The angular speed is given by the formula, ω = θ /t.

after substituting the value given in the equation we get,

ω = 2π / 86400 Seconds

ω = 0.0000726 radians/sec = 7.26 x 10-5 rad/sec

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360 degrees per 24 hours

Each peripheral nerve provides both motor AND sensory innervation to peripheral structures. The answer would be option C i.e. motor AND sensory

Your answer: C) motor AND sensory

Motor fibers carry signals from the brain or spinal cord to the muscles, causing them to contract and produce movement. Sensory fibers, on the other hand, carry signals from sensory receptors in the skin, muscles, and other tissues back to the brain and spinal cord, providing information about touch, temperature, pain, and other sensations. Therefore, each peripheral nerve provides both motor AND sensory innervation to peripheral structures. The answer would be option C i.e. motor AND sensory

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Answer:

octet rule,stable

Explanation:

Answer:

Complete the sentence.

Atoms form chemical bonds to satisfy the  

octet

rule and to become  

stable

.

Explanation:

Answer:

free fall is any motion of a body where gravity is the only force acting upon it

Explanation:

Answer:  Freefall noun. The state of being in a motion affected by no acceleration (force) other than that provided by gravity. freefall noun. The state of falling with no interference from outside forces other than the air resistance (no open parachute, etc.) freefall noun. The state of worsening out of control.

Explanation:

Answer:

Explanation:

Resultant of 12 and 3 ohm in series = 15 ohm

Resultant of 6 and 3 ohm = 9 ohm

Total resultant resistance of circuit = 15 x 9 / (15 + 9)

= 5.625 ohm

current drawn from battery = 4 / 5.625

= .711 A

ii )current through 12 ohm = 4 / (12 + 3 )   , because potential  diff over 12 and 6 ohm will be 4 V .

current through 12 ohm = .267 A

iii )

current through 6 ohm

= .711 - .267

= .444 A

potential difference

= .444 x 6

= 2.664 V .

Galileo classifies qualities into primary and secondary qualities. Primary qualities are those that are inherent in an object and cannot be changed.

key characteristics include, An object's mass, which defines its weight and measures its resistance to acceleration, is the total amount of matter in the object.

The length, width, and height of an object establish its size or dimensions, which in turn determine its volume.

Shape: An object's form or configuration, which influences how it looks and how it is outlined.

Motion is the act of an item moving, including its speed, acceleration, and direction.

Location: An object's coordinates can be used to define its position in space.

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When a ball hits a boundary line in cricket, it is considered in if it does not touch the ground before hitting the boundary line. In tennis, a ball hitting the boundary line is considered in and the point is awarded to the player who hit the ball.

When a ball hits a boundary line in sports such as cricket or tennis, whether it is considered in or out depends on the specific rules of the sport.

In cricket, if the ball hits the boundary line without touching the ground, it is considered a boundary and the batting team is awarded runs. This means that the ball has crossed the boundary and is considered in.

However, if the ball touches the ground before hitting the boundary line, it is not considered a boundary. In this case, the ball is considered out and no runs are awarded to the batting team.

In tennis, if the ball hits the boundary line, it is considered in and the point is awarded to the player who hit the ball. This means that the ball is still in play and the player continues to score points.

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To calculate the potential difference required to accelerate an electron to a specific de Broglie wavelength, we can use the de Broglie wavelength formula:

λ = h / p

where λ is the de Broglie wavelength, h is the Planck's constant (approximately 6.626 x 10^(-34) J·s), and p is the momentum of the electron.

The momentum of an electron can be calculated using the equation:

p = m * v

where m is the mass of the electron (approximately 9.109 x 10^(-31) kg) and v is the velocity of the electron.

Since the electron is initially at rest, its initial velocity (v₀) is zero. We need to find the final velocity (v) that corresponds to the desired de Broglie wavelength.

To find the final velocity, we can use the equation for the kinetic energy of the electron:

K.E. = (1/2) * m * v²

Since the electron is accelerated through a potential difference (V), the kinetic energy gained by the electron is equal to the potential energy difference:

K.E. = q * V

where q is the charge of the electron (approximately -1.602 x 10^(-19) C).

Setting the potential energy difference equal to the kinetic energy, we can solve for the final velocity:

(1/2) * m * v² = q * V

Simplifying, we get:

v² = (2 * q * V) / m

Finally, we can substitute the value of the final velocity (v) in the equation for momentum (p) and then substitute the value of momentum in the de Broglie wavelength equation (λ = h / p).

Let's calculate the potential difference required:

Given:

de Broglie wavelength (λ) = 500 nm = 500 x 10^(-9) m

Step 1: Calculate the final velocity (v)

v² = (2 * q * V) / m

v = √((2 * q * V) / m)

Step 2: Calculate the momentum (p)

p = m * v

Step 3: Calculate the potential difference (V)

λ = h / p

V = (h / λ) * p

Substituting the given values:

h = 6.626 x 10^(-34) J·s

q = -1.602 x 10^(-19) C

m = 9.109 x 10^(-31) kg

λ = 500 x 10^(-9) m

Calculate the final velocity (v):

v = √((2 * (-1.602 x 10^(-19) C) * V) / (9.109 x 10^(-31) kg))

Calculate the momentum (p):

p = (9.109 x 10^(-31) kg) * v

Calculate the potential difference (V):

V = (6.626 x 10^(-34) J·s / (500 x 10^(-9) m)) * p

By performing the calculations, you can determine the potential difference required to accelerate the electron to the given de Broglie wavelength of 500 nm.

To determine the potential difference required to accelerate an electron from rest to a de Broglie wavelength of 500 nm, we can use the de Broglie wavelength equation for particles:

λ = h / p

Where λ is the wavelength, h is Planck's constant (approximately 6.626 x 10^(-34) J·s), and p is the momentum of the particle.

For an electron, the momentum is related to its kinetic energy (K) and mass (m) by the equation:

p = √(2mK)

To calculate the potential difference required, we need to relate the kinetic energy to the potential energy (V) through the electron's charge (e) and the potential difference (ΔV):

K = eΔV

Substituting the expressions for momentum and kinetic energy into the de Broglie wavelength equation, we have:

λ = h / √(2m(eΔV))

Squaring both sides and rearranging the equation, we get:

(eΔV) = (h^2) / (2m(λ^2))

Now we can substitute the given values: λ = 500 nm = 500 x 10^(-9) m, e = 1.6 x 10^(-19) C (charge of an electron), and m = 9.11 x 10^(-31) kg (mass of an electron). Plugging in these values, we can solve for the potential difference (ΔV):

ΔV = (h^2) / (2m(e(λ^2)))

ΔV = ((6.626 x 10^(-34) J·s)^2) / (2(9.11 x 10^(-31) kg)(1.6 x 10^(-19) C)((500 x 10^(-9) m)^2))

Evaluating this expression gives the potential difference required to accelerate the electron to the desired de Broglie wavelength of 500 nm.

Please note that the calculation is based on the given information and assumes a non-relativistic scenario.

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The expression for the angular frequency ω of the physical pendulum is given by ω = √(G/3R), where G is a constant and R is the radius of the sphere.

Let's consider the physical pendulum consisting of a large solid sphere of mass M and radius R. The pendulum is hung from the ceiling by a massless string with a length equal to twice the radius of the sphere.

The moment of inertia for a solid sphere rotating about an axis passing through its center is given by the formula:

I = (2/5) * M * R²

The torque acting on the pendulum is given by the equation:

τ = -I * α

where τ is the torque, I is the moment of inertia, and α is the angular acceleration.

For a physical pendulum, we can relate the torque to the angular displacement θ and the gravitational force acting on the pendulum.

The torque is given by:

τ = -M * g * d * sin(θ)

where M is the mass of the sphere, g is the acceleration due to gravity, d is the distance from the pivot point to the center of mass of the sphere, and θ is the angular displacement.

By combining the equations, we have:

-M * g * d * sin(θ) = -I * α

Substituting the moment of inertia for a solid sphere, we get:

-M * g * d * sin(θ) = -[(2/5) * M * R²] * α

Since the distance d is equal to R (as given in the problem statement), we can simplify the equation further:

-M * g * R * sin(θ) = -[(2/5) * M * R²] * α

Canceling out the mass and rearranging the equation, we obtain:

g * R * sin(θ) = (2/5) * R² * α

Now, for small angular displacements, sin(θ) is approximately equal to θ. Therefore, we can write:

g * R * θ = (2/5) * R² * α

The angular acceleration α can be related to the angular frequency ω using the equation α = ω^2. Substituting this relation, we have:

g * R * θ = (2/5) * R² * ω²

Dividing both sides by R and rearranging the equation, we get:

g * θ / R = (2/5) * ω²

Finally, the angular frequency ω can be expressed as:

ω = √(g * θ / (5R))

Now, according to the problem statement, the length of the string is twice the radius of the sphere.

The angle θ in the physical pendulum is twice the angle in a simple pendulum with the same length due to the geometry of the setup. In a simple pendulum, the length L refers to the distance from the pivot point to the center of mass of the point mass

When the physical pendulum is displaced from its equilibrium position, it swings back and forth, oscillating about the pivot point. The angle of displacement, θ, is measured from the equilibrium position to the current position of the sphere.

In the case of the simple pendulum, the angle of displacement, θ_simple, is also measured from the equilibrium position. However, the length of the simple pendulum is defined as the distance from the pivot point to the center of mass of the point mass, which is different from the length of the physical pendulum.

Therefore, to account for this difference in displacement, we need to multiply the angle of displacement in the simple pendulum by a factor of 2 to obtain the corresponding angle in the physical pendulum.

Therefore, the angle θ in the physical pendulum is twice the angle in a simple pendulum with the same length.

We know that the angular frequency of a simple pendulum is given by ω_simple = √(g / L), where L is the length of the simple pendulum.

Thus, we have:

θ = 2 * θ_simple

Substituting this relation into the expression for ω, we get:

ω = √(g * 2θ_simple / (5R))

Since θ_simple = θ / 2, we can simplify the equation further:

ω = √(g * θ / (5R))

This is the desired expression for the angular frequency ω of the physical pendulum in terms of a constant multiplied by the angular frequency of a simple pendulum with the same mass and length.

The expression for the angular frequency ω of the physical pendulum is ω = √(g * θ / (5R)). This expression relates the angular frequency of the physical pendulum to the gravitational acceleration g, the angular displacement θ, and the radius R of the sphere.

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Answer:

Water Waves

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

Explanation:

Water waves are defined as a combination of longitudinal and transverse waves.

One type of wave that exhibits both longitudinal and transverse motions is water waves. While a wave is travelling through the waver, particles are moving in clockwise circles. The radius of the circles gets smaller as the water depth gets deeper.

In fluid dynamics, the term "dispersion of water waves" refers to frequency dispersion or the fact that waves with different wavelengths move at different phase speeds.

Water waves in this sense are waves that move across the surface of the water, with gravity and surface tension acting as restoring forces.

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Answer:

sequence

Explanation:

sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)

Answer:

1.A

2.D

3.B

4.A

5.A

Explanation:

Every physical activity requires a specific amount of oxygen for the human organs (heart, lungs, and muscle). Athletes must breathe efficiently to perform at their best, since a high oxygen level reduces fatigue and dizziness and promotes peak performance. Thus option 1. A, 2. D, 3. B, 4. A, 5. A is correct.

The range of 95-99% represents normal, healthy oxygen saturation levels. And can be simply measured with a fingertip pulse oximeter, a cheap, basic equipment. Your blood oxygen saturation is most likely within the typical range for active, healthy athletes (like you!).

Numerous websites that promote the purported advantages of breathed oxygen can be found by searching for “supplemental oxygen and athletes.” Almost all of them receive funding from businesses that sell oxygen.

Therefore, Because it doesn't function, more oxygen is not regarded as a performance-enhancing substance.

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The speed of the two players after the collision is 2.21 m/s.

The speed of the two players after the collision is calculated by applying the following formula.

m₁u₁ + m₂u₂ = v ( m₁ + m₂ )

where;

(100 kg x 6 m/s )  -  ( 90 kg x 2 m/s ) = v ( 100 kg  +  90 kg )

420 = 190v

v = 420 / 190

v = 2.21 m/s

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V = sqrt (KE * 2 / m) = 4.913 m/s, where KE = 0.5 * 0.58 * 1.6*1.6 = 0.7424 J. (c) Work done = change in KE = 7 - 0.7424 = 6.2576 J.

Work is the energy used by one thing to move another object across a distance by applying a force. The equation W = F x d calculates the work done on an item with a given force, F, and a certain distance, d. It should be noted that this equation presupposes that the force is applied in a direction parallel to the object's direction of motion. How to manage non-parallel circumstances will be covered in a later lecture.

When we apply force "F" to a block, the body moves with some acceleration or, moreover, its speed increases or decreases depending on the direction of the force. The system's kinetic energy changes as speed increases or decreases.

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The complete question is:

A 0.58 kg rubber ball has a speed of 1.60 m/s at point A and kinetic energy of 7.0 J at point B. (a) Determine the ball's kinetic energy at A (b) Determine the ball's speed at B (c) Determine the total work done on the ball from A to B

Answer:

ionic

Explanation:

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Answer:

The field will remain the same

Explanation:

This is because electric field given as

E1= kq1/r²

And that of second charge

E² = kq2/r²

Is not affected by the size of the second charge q2

Answer:

The answer is "a, c and b"

Explanation:

The correct answer is Specific heat.

The amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit at standard atmospheric pressure is called specific heat in BTU (British Thermal Unit) which is a unit of measurement for energy used as per the British system.

BTU is used for measuring the heating or cooling capacity of an appliance as per the FPS system. For example, the BTU rating of a furnace or air conditioner indicates how much heat or cooling it can produce in a given period of time.

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a)  The frequency of the wave is approximately 689.66 ×10¹² Hz.

b) The wave is a part of the visible light spectrum.

c) The magnitude of the electric field is 3.75×10² V/m.

d)  The electric field oscillates parallel to the x-axis.

e) The vector equations for E(z,t) and B(z,t) can be written as:

E(z,t)=E0⋅sin(kz−ωt)⋅i

B(z,t)=B0⋅sin(kz−ωt)⋅j

f) the Poynting vector is approximately 8.93 x 10⁵ W/m².

g) the time-averaged rate of energy flow associated with this wave is approximately 3.95×10⁵  W/m².

a) The frequency of an electromagnetic wave can be determined using the formula:

c=λ⋅f

where c is the speed of light in vacuum (approximately 3×10⁸m/s), λ is the wavelength, and f is the frequency.

Given the wavelength λ=435 nm (1 nm = 10⁻⁹ nm), we can convert it to meters:

λ=435×10⁻⁹ m

Substituting the values into the formula:

3×10⁸ m/s= (435×10⁻⁹ m) f

Solving for f:

=3×10⁸ m/s /435×10⁻⁹ m

Calculating the value:

= 689.66×10¹² Hz

Therefore, the frequency of the wave is approximately 689.66×10¹² Hz.

b) The electromagnetic spectrum includes various regions, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The specific type of wave can be determined based on the frequency or wavelength.

Since the frequency of the wave is in the range of hundreds of terahertz, it falls within the visible light region of the electromagnetic spectrum. Visible light is typically defined as having a wavelength range of approximately 400 nm to 700 nm. Therefore, this wave is a part of the visible light spectrum.

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Answer: The correct option is A ( because the Earth is rotating, with the telescope attached to it).

Explanation:

A telescope is a device that is used mostly for viewing distant objects. It's an optical instruments as it's made up of lens and curved mirror depending on the type of telescope. The first telescope was invented by Hans Lippershey in 1608. It is used extensively in war,sea and astronomical discoveries.

Parts of a typical telescope includes:

--> the optical system: this is the most important part of a telescope. This determines the optical aperture of the telescope, how bright or how sharp the formed image would be. This can be a lens or a mirror.

--> Eyepiece: this magnifies the image formed.

--> Motorized drive system: these drive system are mounted with the telescope to aid in a quick and smooth movement while detecting, for example, celestial bodies. This part of the telescope is important as the telescope is mounted on the earth surface which rotates about its axis from west to east. Since the drive system is motorized, it can automatically move very smoothly from east to west at exactly the same rate that Earth is rotating from west to east, so it can continue to point at the object being observed.

The lens should have a f = 0.520 m focal length, and the picture distance should be s' = 2s = 1.734 m.

Analyze the focal length to see whether it is positive or negative. Decide whether the object distance is positive or negative in step two. Step 3: Determine how far the image is from the lens using the equation di=11f1do d I = 1 1 f 1 d o.

Assuming that the lens is thin, we can use the thin lens equation to relate the object distance (s) and image distance (s') to the focal length (f):

1/f = 1/s + 1/s'

We can use similar triangles to relate the object distance s and image distance s' to the heights h and h':

h / s = h' / s'

Substituting h = 2 cm and h' = 4 cm, we have:

\(2 cm / s = 4 cm / s'\)

s' = 2 s

Substituting this expression for s' into the thin lens equation, we have:

1/f = 1/s + 1/2s

3/2s = 1/f

s = 2f/3

Now, we can use the given distance from the spider to the wall to set up another equation:

s + s' = 2.6 m

Substituting s' = 2s, we have:

s + 2s = 2.6 m

s = 0.867 m

Substituting this value of s into the expression for s in terms of f, we have:

0.867 m = 2f/3

f = 0.520 m

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Answer: A haploid cell formed in the female uterus

Answer:

Explanation:

First part of the journey;

If the car starts from rest, then accelerates at 1.20 m/s^2 for 7.00 s, the total time taken during this period is 7.0s.

But then  lets get the velocity v of the car during its first part of the journey.

Using the formula v1 = u1+ at1

v = 0+1.2(7)

v = 8.4m/s

Second part of the journey is when the driver hits the brake and slowing to stop at a rate of -4.25 m/s^2. To calculate the time it takes by the body to decelerates, we will use the equation of motion v2 = u2 + at2

v = final velocity of the car during the second part of the journey

u = initial velocity of the car during the second part of the journey

a = deceleration

t = time taken

Given v2 = 0m/s, u2 = 8.4m/s, a = -4.25m/s²

0 = 8.4-4.25t2

4.25t2 = 8.4

t2 = 8.4/4.25

t2 = 1.98secs

Total time taken for the journey = t1+t2

= 7.0s + 1.98s

= 8.98secs

Answer:

A. The shorter a wire is, the lower resistance it will have.