Turn on the timer and click the green circular button to start a wave pulse. Stop the timer when the wave pulse first hits the end of the string (when the final bead first starts to move). Do this a couple times to get a precise measurement of the time it took the wave pulse to cross the string. What is the wave velocity

Answer:

y e s

Explanation:

Answer:

± .55 kg

Explanation:

55  * 1% = .55 kg

± .55 kg

Answer:

it was helpful to you dear

2.15 s time  it take the can to hit the floor when a can of bean rolls off a horizontal table with a velocity of 0.44 m/s

velocity=distance/time

time=distance/velocity

time=0.95/0.44

time=2.15 s

A vector number called velocity can be used to express "the speed at which an object changes its location." Imagine someone moving quickly while taking two steps forward and two steps back, all while remaining in the same place. A vector quantity is velocity. As a result, velocity is aware of direction. When calculating an object's velocity, the direction must be taken into consideration. A speed of 55 miles per hour is insufficient detail. The velocity of the item must be properly described in terms of the direction. Simply explained, the velocity vector's direction shows how an item is moving.

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Answer:

0.05m

Explanation:

Given parameters:

Force constant of the spring  = 40000N/m

Potential energy  = 42J

Unknown:

Extension  = ?

Solution:

To solve this problem, use the expression below:

           E.PE  = \(\frac{1}{2}\) k e²  

k is spring constant

e is the extension

              42  =  \(\frac{1}{2}\)  x 40000 x e²  

               e  = 0.05m

Answer:

I think it is D or A

Explanation:

I have not done this in a long time, so sorry if wrong.

The range of values of o = π/2

Given potential well is U(x) = (h²/8T²mL²) z₀

Now,The wave function can be written asψ(x) = Acos(ka) + Bsin(ka)for a < x < b

As the wave function must be zero at x = a and x = b,So, A = 0

Now, The wave function becomes,ψ(x) = Bsin(ka)for a < x < bAlso, k² = 2TmL²/h² * (E - U₀)

for this given potential well as U(x) = (h²/8T²mL²) z₀,So, we havek² = 2TmL²/h² * (E - U₀) = 2TmL²/h² * E - z₀ ....(1)

Let, the bound state energy be E = -E

Below the potential well is flat, so U(x) = 0 which means z₀ = 0

From equation (1), we getk² = 2TmL²/h² * (-EBound state means that the wave function is zero outside the potential well. So, sin(ka) should be zero at x = L. This implies,ka = nπ

where n is a positive integer.Substituting this in the above equation, we get-k² = 2TmL²/h² * (-E) = (nπ/a)² * 2Tm/h²

Substituting given values, we get

150 = (nπ/2)² * (1.05 × 10^-34 / (6.626 × 10^-34)² * 2 * (1.67 × 10^-27))

Solving this equation, we get n = 1So, the range of values of o = π/2

Corrected expression:

150 = (nπ/2)² * (1.05 × 10^-34 / (6.626 × 10^-34)² * 2 * (1.67 × 10^-27))

Solving for n, we get n = 1

Hence, the range of values of o = π/2

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The average coefficient of rolling friction between the driveway and the skateboard wheels is 0.15.

The average coefficient of rolling friction can be determined by analyzing the given information. We know that the combined mass of the boy and his skateboard is 60 kg and the force of gravity acting on them is 590 N. The force of gravity can be calculated using the formula F = m * g, where F is the force, m is the mass, and g is the acceleration due to gravity (approximately 9.8 m/s²). Thus, we have 590 N = 60 kg * 9.8 m/s².

Since the force of gravity acts in the opposite direction of motion, it is necessary to consider the net force to calculate the coefficient of rolling friction. The net force can be determined using Newton's second law, F = m * a, where F is the net force, m is the mass, and a is the acceleration. In this case, the acceleration is calculated by dividing the change in velocity by the time taken to stop. The initial velocity is 5.5 m/s, and the time taken to stop is 5.0 seconds. Therefore, the acceleration is (0 m/s - 5.5 m/s) / 5.0 s = -1.1 m/s².

Next, we can calculate the net force using F = m * a. The net force is equal to the force of gravity plus the force of friction, which is given by the equation F = μ * N, where μ is the coefficient of rolling friction and N is the normal force. The normal force is equal to the force of gravity, which is 590 N. Therefore, we have μ * 590 N = 60 kg * -1.1 m/s².

Simplifying the equation, we find that μ = (-1.1 m/s²) / (590 N / kg) ≈ -0.0019. However, the coefficient of friction cannot be negative, so we take the absolute value, giving us the average coefficient of rolling friction as approximately 0.0019.

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NEOs, or Near-Earth Objects, refer to asteroids and comets that have orbits that bring them close to Earth. These objects are of great interest to scientists and astronomers due to the potential threat they pose to our planet in the event of a collision. NEOs can be composed of rock, metal, ice, and dust, depending on whether they are asteroids or comets.

Asteroid 2004 FH, which passed within a tenth of the Earth-Moon distance in March 2004, was classified as a NEO. Its classification was based on the discovery that its period, or the time it takes to complete one orbit around the Sun, was about nine months. This close encounter with Earth and its relatively short period made it fall under the category of NEO.

NEOs are further classified into different groups based on their orbits. These classifications include Atens, Apollos, and Amors. Atens have orbits that primarily fall within the orbit of Earth, Apollos have orbits that cross Earth's orbit, and Amors have orbits that are mostly outside Earth's orbit but can still come close to our planet.

Studying NEOs is crucial for understanding the dynamics of our solar system and for developing strategies to mitigate potential asteroid impacts on Earth.

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Answer: But with that germ-ridden egg comes a mortal danger: Osmosis discovers Frank has really contracted a villainous and black-hearted deadly virus known as Thrax who arrives and is plotting to ultimately overheat Frank's body, killing him from the inside out!

Answer: It sends signals and messages throughout the body.

Answer:

b.

Explanation:

if you read B. its explains it sends signals and messages throughout your body so thats uour nervous system.

your welcome

According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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Answer:

333 m

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 0 m/s.

Time (t) = 8.14 s.

Final velocity (v) = 80.79 m/s.

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) =?

v² = u² + 2gh

80.79² = 0 + (2 × 9.8 × h)

6527.0241 = 0 + 19.6h

6527.0241 = 19.6h

Divide both side by 19.6

h = 6527.0241 / 19.6

h = 333 m

Thus, the plane was at a height of 333 m when the package was dropped.

Answer:

Help with what

Explanation:

Answer:

Option C. f¯¹(x) = (5x + 3)/2

Explanation:

f(x) = (2x – 3)/5

We can obtain the inverse of the above equation as follow:

Let f(x) be y.

Therefore,

F(x) = (2x – 3)/5

y = (2x – 3)/5

Next, we shall interchange the position of 'y' and 'x'. This is illustrated below:

y = (2x – 3)/5

x = (2y – 3)/5

Next, we shall make y the subject of the expression. This is illustrated below below:

x = (2y – 3)/5

Cross multiply

2y – 3 = 5x

Rearrange

2y = 5x + 3

Divide both side by 2

y = (5x + 3)/2

Therefore, the inverse of

f(x) = (2x – 3)/5 is f¯¹(x) = (5x + 3)/2

It means a satellite orbiting close to the surface of the earth has a time period of revolution, about 84.6 Minutes.

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After three half-lives, 1/8 (or 0.125) of the parent isotope remains. Thus, 0.125 times the parent atoms. The daughter isotope would be equivalent to the remaining parent isotope, 0.125 times the original number of parent atoms.

After three half-lives, the parent isotope has exponentially decayed, forming the daughter isotope. Each half-life reduces the parent isotope by half and increases the daughter isotope. Three half-lives have passed, reducing the parent isotope to 1/8 of its initial level. The rock sample would have 1/8 of the parent isotope.

The daughter isotope would have accumulated during decay. After three half-lives, the daughter isotope would have reached 3/8 of the parent isotope as each half-life creates one-half of it. After three half-lives, the rock sample would have 1/8 of the parent isotope and 3/8 of the daughter.

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Answer:

it is chemical energy

Explanation:

that is the energy used by our body, so it is the one that we will loose. and the energy that we gain is also chemical energy

Answer:

friction as friend

friction as foe

hope it helps

Answer:

Wear and tear of soles of our shoes is due to friction.

When a tyre deflates, it is difficult to move the vehicle because of increased friction between the tyre and the road surface.

Machines get heated up and produce noise because of friction.

Answer:

An image of the cosmic microwave background radiation, taken by the European Space Agency (ESA)'s Planck satellite in 2013, shows the small variations across the sky (Image credit: ESA/Planck Collaboration) The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began

Explanation:

Answer:

The independent variable is the number of dry cells and the dependent variable is the time the bulb works.

Explanation:

In this exercise, you are asked to analyze the variables derived from Ómar's hypotypeis

  "If more dry cells are connected end-to-end, a light bulb will work longer because more energy is available."

In this hypothesis, the independent variable that is controlled by the researcher is the number of batteries to be connected in series.

The dependent variable that is measured by the researcher is how long the bulbs last.

When reviewing the different answers, the correct one is:

The independent variable is the number of dry cells and the dependent variable is the time the bulb works.

Answer:

It is A.

Explanation:

I did the test on Edg.

Due to the gravitational pull of Earth, large tides were produced when moon was molten and going through chemical differentiation.

So there is a reason why the moon always keeping the same face toward Earth.

The simpler answer is that it rotates on its axis in about the same amount of time as it takes for the moon to orbit the Earth, or about 27 days.

The complex answer is that the gravity of the moon that changes the Earth generates tides that is also called "tidal locking". The moon is being pulled toward us by Earth (creating a rocky bulge) and is now in "synchronous rotation," which means that it spins once for each orbit around Earth due to the constant pull of Earth's gravity.

To sum up, moon rotates slowly and always faces Earth as a result of the friction produced by Earth's gravity.

Image: Explains why moon is always keeping the same face toward earth

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Explanation:

It is given that there is distance time graph. The slope of any distance time graph will give the speed or velocity of the object.

In the context, it is seen that there is a point in the distance - time graph. And the values of the point in the graph is (4,15).

Now here, the distance is plotted in the  ordinate or the vertical y-axis while time is plotted in the abscissa or the horizontal x-axis.

Thus the point (4,15) tells us that the object has traveled 15 units in time equal to 4 seconds.

Hence, a 200.7 joule change in the box's potential energy has occurred (J).

Potential energy has a simple definition: It is a type of energy that possesses the ability to perform work but is not now performing work or exerting any force on any other objects. In other words, potential energy concerns object positions rather than object motion.

The following equation provides the potential energy (PE) gained by lifting an object against gravity:

PE = m * g * h

where m is the object's mass, g is its gravitational acceleration, and h is the height to which it is raised.

Substituting the given values, we get:

PE = 11 kg * 9.81 m/s² * 1.7 m

PE = 200.7 J

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Answer:

my name is Deepika Pandey anion I am 9 years old my father name is Dinesh Pandey my name is and my sister name is sister name is a

Answer:

The answer is . A 46.2g

Answer:

High water level during a tide is called High tide.

Low water level during a tide is called Low tide.

Answer:4

Explanation: