trying to determine its depth, a rock climber drops a pebble into a chasm and hears the pebble strike the ground 4.00 s later. (a) if the speed of sound in air is 343 m/s at the rock climber's location, what is the depth of the chasm? m (b) what is the percentage of error that would result from assuming the speed of sound is infinite?

The given expression can be written in an expanded form as 4,350,000

Given expression:

\(4.35 \times 10^6\)

To find:

To expand the given expression, multiply 4.35 by 1,000,000

\(= 4.35 \times 1,000,000\)

move the decimal point six (6) places to the right and you will obtain the following result.

\(= 4,350,000\)

Therefore, the expanded form of the expression is 4,350,000

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A beam of blue light causes photoelectrons to be emitted from a photoemissive surface. An increase in the intensity of the blue light will cause an increase in the number of photoelectrons emitted. Therefore, an increase in the intensity of blue light will cause an increase in the light intensity.

What is light? Light is a type of electromagnetic radiation that travels in waves at a velocity of 299,792 kilometers per second (km/s) in a vacuum. It is a form of energy and, like all forms of energy, can be transferred. Light, like other electromagnetic waves, has both electric and magnetic fields that oscillate perpendicularly to one another at right angles.Light has a very important property, which is its intensity. The amount of light that passes through a given area or space per unit time is known as light intensity. It is the amount of light energy that falls on a unit area in a given time. The energy of light, like all energy, can be described in terms of photons.

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In a SWOT analysis, the lack of spare production capacity would be considered a weakness because it limits a company's ability to respond to changes in demand or to scale up operations for increased growth opportunities.

SWOT stands for Strengths, Weaknesses, Opportunities, and Threats, and so a SWOT analysis is a technique for assessing these four aspects of your business. SWOT Analysis is a tool that can help you to analyze what your company does best now, and to devise a successful strategy for the future. A SWOT analysis is designed to facilitate a realistic, fact-based, data-driven look at the strengths and weaknesses of an organization, initiatives, or within its industry. In a SWOT analysis, the lack of spare production capacity is considered a weakness because it limits a company's ability to respond to changes in demand or to scale up operations for increased growth opportunities.

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Answer:

by raising them in an environment in wich it is common and giving false information about other races to install bad stereo types and distrust in the child who will grow up to not know any better do to the dumb ignorant parent raised the same way

Explanation:

?????? thats all i got im not a politician BLM

If a ball is given a push so that it has an initial velocity of 2 m/s down a certain inclined plane, then the distance it has rolled after t seconds is s = 2t + t². Then it takes 11 seconds for the velocity to reach 24 m/s. The correct option is D.

To find the time it takes for the velocity of the ball to reach 24 m/s, we need to solve for the time when the velocity function equals 24 m/s.

The velocity function is the derivative of the distance function, so we'll first find the derivative of the distance function s = 2t + t² with respect to time t:

ds/dt = d/dt(2t + t²)

ds/dt = 2 + 2t

Now we can set the velocity function equal to 24 m/s and solve for t:

2 + 2t = 24

Subtracting 2 from both sides:

2t = 22

Dividing both sides by 2:

t = 11

Therefore, it takes 11 seconds for the velocity to reach 24 m/s.

The correct answer is (d) 11 seconds.

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Coal, and oil are fossil fuels they are non - renewable. Nuclear sources are alo non renewable energy since they are unstable and hazardous to the environment and thus are difficult to manage for an efficient energy generation.

Renewable energy sources are those which can reproduced and will be long lasting over time. Whereas non renewable resources like fossil fuels  and nuclear sources are not at all recycled. Moreover they causes harmful effects to the environment.

Waste from coal or natural gas production necessitates the use of surplus energy and environmental mitigation. Considering these variables, it is evident that coal's overall usable energy efficiency is just 29% of its initial energy value.

Solar energy is the better alternative as a renewable energy source.Wind, on the other hand, rates at 50% efficiency. Wind energy sometimes has a higher efficiency than this %. And using wind energy doesn't produce any pollution as solar energy.

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The wavenumber is directly proportional to the wavelength of an electromagnetic wave is a false statement .

In physics, the wavenumber is also known as propagation number or angular wavenumber and it is defined as the number of wavelengths per unit distance.

A wave number of any wave is inversely proportional to its wave number

hence , it is false to say that the wavenumber is directly proportional to the wavelength of an electromagnetic wave

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Ultra = X-ray

Explanation:

how are things going to paint the roof for beginners painting and decorating the whole house so I'm going away with a few sports mates for a couple nights for beginners but will have a look painting at a time and see what is going to be Strong enough

Answer:

3 i think

Explanation:

hope this helps also Hiiii

The cumulative distance traveled by the bird is 3.12 km.

The cumulative distance of the bird is calculated as follows;

Apply the principle of relative velocity.

Vbt - Vrt = L

(Vb - Vr)t = L

where;

Substitute the given parameters and solve for time of motion,

(41 - 8.2)t = 2.5

32.8t = 2.5

t = 2.5/32.8

t = 0.076 hr

Distance traveled by the bird = 0.076hr x 41 km/hr = 3.12 km

Thus, the cumulative distance traveled by the bird is 3.12 km.

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Answer:

2. they will both hit with the same velocity

Explanation:

The ball which is thrown vertically upwards with a initial velocity V\(_{i}\)will have the same velocity as the one thrown downwards with a velocity of V\(_{i}\) when it reaches back to the edge of the cliff as no air resistance it acting on it. So the two balls have the same downward velocity at the edge of the cliff. Hence, they hit the ground with the same final velocity.

Answer:

\(v = \sqrt{ \frac{2gm}{r} } \)

where, g = universal gravitational constant,G

Answer:

c) the distance a star is from Earth affects how bright it appears in the night sky.

Explanation:

a) there are MUCH bigger stars in the universe then the sun. The sun is said to be a medium star.

b) If the sun were to burn out it would affect earth a lot. The sun is needed for Earth's survival. Earth needs the heat from the sun or it'd a big cold planet full of ice that probably couldn't support life.

d) the big bang theory supports that the universe is growing

I know c), is correct

Explanation:

laws of motion

H=ut + 0.5gt^2

but u(initial velocity)=0 and g=10m/s^2

H=5t^2

=5×10^2

=5 × 100

=500m

The carousel that rotates at 0.10 rev/s, takes 125.66 s to go around twice

To solve this uniform circular motion (UCM) problem the formula and the procedure we will use is:

w= (2*π *n)/t

Where:

Information about the problem:

Applying the angular velocity formula and isolating the time, we get:

w= (2*π *n)/t

t = (2*π *n)/w

t = (2 * 3.1416 * 2)rev / 0.10 rev/s

t = 125.66 s

When an object is in uniform circular motion, the angle described by the radius in each unit of time is known as angular velocity. It is measured in units of (rad/s) (revolutions/s).

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If Jupiter were scaled to the size of a basketball, Earth would be the closest to the size of a pinhead. The right option is D).

Given that Jupiter was scaled to the size of a basketball.

Therefore the size of Earth with respect to Jupiter can be determined by the below calculations:Radius of Jupiter = 43,441 milesRadius of a basketball = 4.7 inches

Therefore, scaling down the size of Jupiter by dividing the radius of Jupiter by the radius of a basketball, the size of Jupiter would be;Size of Jupiter = 43,441 miles/4.7 inchesSize of Jupiter = 9,233 basketballs

For Earth, the size of the Earth can be calculated with respect to the size of Jupiter as shown;

Size of Jupiter = 9,233 basketballs

Radius of Earth = 3,959 miles

Diameter of Earth = 7,918 miles

Diameter of a basketball = 9.55 inches

Therefore, the size of Earth with respect to the size of Jupiter can be calculated as shown below;

Earth's diameter in basketballs = 7,918 miles/9.55 inches = 832.3 basketballs

Since there are 9,233 basketballs in Jupiter, then the size of Earth is 832.3 basketballs in proportion to the size of Jupiter.

If Jupiter were scaled to the size of a basketball, Earth would be the closest to the size of a pinhead. The right option is D).

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Answer:

Explained below

Explanation:

1) The human arm: This is a type of simple machine called "Lever". In this type of machine, the elbow acts as the fulcrum, the palm serves as the load because that's where we place the load we want to carry. While the inner part of the arm which is the inner part of the elbow represents the effort because that is the joint we mover when making use of our arms.

2) Pulleys: An example of this in the human body is the knee cap where the direction of an applied force is changed. Thus means as it is in motion, it alters the direction for which the quadriceps tendon pulls on the tibia.

3) wheel and axle: An example of this in the human body is the lateral rotation of the shoulder joint medial. The humerus which is the bone between the shoulder and elbow will act as the axle while the rotator will be the will because when it is rotated a little bit, the humerus will move along with it.

Answer:

Antacids.

Explanation:

Magnesium hydroxide is commonly used for sicknesses and etc.

Capacitance, charge and electric potential will be greater than the capacitor without the dielectric.

Capacitance is the a property of an electric conductor or set of conductors that is measured by the amount of separate electric charge that can be stored on it per unit change in electric potential.

The value of capacitance for the parallel plate is C = (3∈0AK)/d

Since two identical, parallel-plate capacitors are connected

therefore the value of capacitance for both the plate is C

Ceq. = (C1*C2) / C1 + C2 = C*C / C+C = C2

When the battery remains connected, the potential difference [V] remains constant

Q=CV

∴Cafter>Cbefore [C increased]

∴Qafter>QBefore [Q increased]

Potential difference and charge across the capacitor before the dielectric:

Qbefore = \(\frac{CV}{2}\)

Vbefore = Vafter = V

Potential difference and charge on the capacitor after inserting the dielectric:

Qafter = Ceq*V = \(\frac{kCV}{k+1}\)

Vafter = Q*After / KC =  \(\frac{\frac{kCV}{k+1}}{kc}\)

Vafter=  \(\frac{V}{k+1}\)   [K>1]

[Hence V decreases]

Vbefore > Vafter

Also,  E = \(\frac{V}{d}\)

therefore [E]before > [E]after [E decreases]

Energy stored in the capacitor:-

U=\(\frac{1}{2} CV^{2}\)

As V= constant

Cafter > Cbefore .

Hence Uafter > Ubefore

Thus, the electrostatic potential increases.

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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.

Capacitance is the amount of charge a capacitor can store per volt of potential difference.

Capacitance is defined as the capacitors ability to store an electrical charge on its plates. Capacitance is derived from capacity which means ability to store.

So we can conclude that Capacitance is the amount of charge a capacitor can store per volt of potential difference.

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The amount of charge a capacitor can store per volt of potential difference is called the capacitance of the capacitor.

The capacitance has to do with the amount of charge that is stored by a capacitor. We know that a capacitor is a device that can be used to store electric charges. We have in it, two capacitors separated by a dielectric material.

Hence, the amount of charge a capacitor can store per volt of potential difference is called the capacitance of the capacitor.

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Answer:

Explanation:

A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.

In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.

Amplitude:

The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."

Effective Length:

The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."

It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.

Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.

(a) The work function  is 1.98 x 10⁻¹⁹ J.

(b) The threshold frequency is 3 x 10¹⁴ Hz.

(c) The maximum kinetic energy of the most energetic electron is 3.32 x 10⁻¹⁹ J.

(d) Photo-electron would be ejected.

(e) The only constant parameter would be speed of the photon.

(f) The slope of the graph is 6.67 x 10⁻³⁴ J.s

(a) The work function of the experimental photo-missive material is calculated as follows;

Ф = hf₀

where;

Ф = hf₀

Ф = 6.626 x 10⁻³⁴ x 3 x 10¹⁴

Ф = 1.98 x 10⁻¹⁹ J

(b) The threshold frequency of the experimental photo-missive material is the frequency at which the kinetic energy is zero = 3 x 10¹⁴ Hz.

(c) The maximum kinetic energy of the most energetic electron is calculated as;

K.E = E - Φ

K.E = ( 6.626 x 10⁻³⁴ x 8 x 10¹⁴) -  1.98 x 10⁻¹⁹ J

K.E =  3.32 x 10⁻¹⁹ J

(d) The frequency of the photon with a wavelength of 500 nm is calculated as;

f = c/λ

where;

f = ( 3 x 10⁸ ) / ( 500 x 10⁻⁹ )

f = 6 x 10¹⁴

Since the frequency of the incoming photon is greater than  the threshold frequency, photo-electron would be ejected.

(e) If you use a different experimental photo-missive material the only parameter that would be the same on the graph is speed of photon.

(f) The slope of the graph is calculated as;

m = (2.5 eV - 0 eV) / [(9 - 3) x 10¹⁴]

m = (2.5 ev) / (6 x 10¹⁴)

m = (2.5 x 1.6 x 10⁻¹⁹ ) / (6 x 10¹⁴ )

m = 6.67 x 10⁻³⁴ J.s

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None of the games we publish on the website have answer keys available. It's Time for Something Different is one of Breakout EDU's catchphrases. By demonstrating that teachers don't always know the answers, we hope to prove this. Nothing has to be set up; the game is ready to start.

Hints are merely some information to help your group get over a barrier or view the data differently; they are not solutions. When the box is opened, Breakout EDU doesn't end.

Therefore, The game's facilitator, who is watching and observing the group, provides you with these tips.

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Answer:

50 kmph

Explanation:

300 / 6 = 50

It is estimated that there is b. 20 to 30 times as much more water stored underground than in all the surface streams and lakes.

This significant amount of water is found in aquifers, which are underground layers of rock, sand, and gravel that hold water. These underground reservoirs play a crucial role in providing freshwater to communities, agriculture, and industries worldwide.

Surface water, on the other hand, consists of lakes, rivers, and streams, which are visible and more commonly utilized sources of water. While both underground and surface water sources are essential for sustaining life on Earth, it's crucial to understand the vast difference in their quantities to efficiently manage and protect these valuable resources. It is estimated that there is b. 20 to 30 times as much more water stored underground than in all the surface streams and lakes.

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The given sequence does converge. It converges to 4. To determine if the given sequence converges, we need to analyze its pattern.

The sequence is defined as {4- (3)}** n=0, where n represents the index of the term in the sequence. The expression within the braces, 4- (3), suggests that each term is obtained by subtracting 3 multiplied by the previous term from 4.

Let's calculate a few terms to observe the pattern:

Term 0: 4 - (3)* = 4 - 0 = 4

Term 1: 4 - (3)4 = 4 - 12 = -8

Term 2: 4 - (3)(-8) = 4 + 24 = 28

Term 3: 4 - (3)*28 = 4 - 84 = -80

From the calculations, it is clear that the sequence does not converge to a specific value. Instead, it oscillates between positive and negative values, never settling down to a single value. Therefore, the given sequence does not converge.

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The acceleration of the object is 2.0 m/s². This means that for every second the object is in motion, its velocity will increase by 2.0 meters per second.

The given information is the net force (N) = 5.0 and the mass (kg) = 2.5. We need to determine the acceleration.


Acceleration is the rate at which an object's velocity changes over time.

It is directly proportional to the net force applied to the object and inversely proportional to its mass.

The formula to calculate acceleration is:

Acceleration = Net Force / Mass

Now, let's substitute the given values into the formula:

Acceleration = 5.0 N / 2.5 kg

Simplifying the equation:

Acceleration = 2.0 m/s²

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The coefficient of linear expansion for the copper wire can be determined by comparing the change in length of the wire with the initial length and the temperature change.

The coefficient of linear expansion is a material-specific constant that represents how much a material's length changes per degree Celsius of temperature change. In this case, the copper wire initially has a length of 12.0 meters and expands by 1.53 centimeters when heated from 25.0°C to 100.0°C.

To calculate the coefficient of linear expansion, we can use the formula ΔL = αL₀ΔT, where ΔL is the change in length, α is the coefficient of linear expansion, L₀ is the initial length, and ΔT is the temperature change. Rearranging the formula, we have α = ΔL / (L₀ΔT).

Substituting the given values, α = (0.0153 m) / (12.0 m * (100.0°C - 25.0°C)) = 4.25 x 10^(-5) °C^(-1).

Therefore, the coefficient of linear expansion for the copper wire is approximately 4.25 x 10^(-5) °C^(-1). This value indicates the extent of length change per degree Celsius of temperature change for the copper wire.

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The peak out of phase voltage also becomes doubled with increase in frequency .

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