explain how you can determine the amplitude of vibration (that is the amplitude of the displacement) from acceleration.

Answer:

2 1 1

Explanation:

Answer:

211

Explanation:

Answer:

Option (I)

Explanation:

The independent varible is arm length. Therefore, to eliminate the effect of other factors and make a valid and effective conclusion, only the arm length should be changed, while other factors (mass, force and materials) should remains the same.

Answer: Only the arm length should be changed. The mass should remain the same.

Explanation:

The three essential diagnostic features of anorexia nervosa, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), are:

It is important to note that these diagnostic features must be present and significantly impair the individual's functioning in order to meet the criteria for anorexia nervosa. Additionally, there may be other associated features and behaviors,

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Answer:

In a longitudinal wave, the crest and trough of a transverse wave correspond respectively to the compression, and the rarefaction.

Explanation:

Answer:

48

Explanation:

you basically divide 1200 into 25

The intended receiver did not receive the ball since the ball travelled a shorter distance.

The time of motion of the ball is calculated by applying the following formula as shown below.

h = vt + ¹/₂gt²

where;

1.3 = ( 15.2 x sin40 )t  +   ¹/₂ ( 9.8 )(t²)

1.3 = 9.8t  +  4.9t²

4.9t² + 9.8t - 1.3 = 0

solve the quadratic equation suing formula method;

t = 0.13 second

The horizontal distance of the ball is calculated as;

d = Vₓt

d = ( 15.2 x cos 40) x 0.13

d = 1.51 m

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Answer:

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

Explanation:

Consideremos que el cuerpo representa nuestro sistema de estudio, el cual se desplaza por una carretera y experimenta rozamiento, significando cambios en la energía cinética y potencial gravitacional. La presencia de rozamiento indica una disipación de la energía del cuerpo, cuya energía mecánica total disminuye, significando un sistema no conservativo.

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

The type of change that occurs when coal is burned completely in a power plant, resulting in the formation of carbon dioxide, is a chemical change.

When coal is burned completely in a power plant, a chemical reaction takes place between the solid carbon in the coal and the oxygen gas from the atmosphere. This reaction is known as combustion. During combustion, the carbon in the coal combines with oxygen to form carbon dioxide (CO2). This process involves the breaking and rearranging of chemical bonds between the carbon atoms and the oxygen atoms.

A chemical change, also known as a chemical reaction, involves the transformation of one or more substances into different substances with different chemical properties. In this case, the solid carbon in the coal is being transformed into carbon dioxide gas. The formation of carbon dioxide is a chemical change because new chemical bonds are formed and the chemical composition of the coal is altered.

Therefore, the correct answer is c. Chemical.

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a) The expression to determine the velocity of cart A is \(v_{A} = 2\cdot \sqrt{g\cdot H}\).

b) The expression to determine the velocity of cart B is

\(v_{B} =\sqrt{2\cdot g\cdot H }\).

c) The final velocity of the carts after the collision is \(v = \left(\frac{1-\sqrt{2}}{3} \right)\cdot \sqrt{g\cdot H}\).

d) The collision is inelastic since a part of the energy of the entire system is lost when they stick together.

In this question we shall apply principle of energy conservation and principle of linear momentum conservation to model an inelastic collision between two carts.

a) The combination of cart and ramp can be considered a conservative system as there are no non-conservative forces (i.e. friction), the final velocity of cart A (\(v_{A}\)) is related to the change in gravitational potential energy:

\(\frac{1}{2}\cdot M\cdot v_{A}^{2} = M\cdot g \cdot 2\cdot H\) (1)

Now we clear \(v_{A}\) and simplify the resulting expression:

\(v_{A} = 2\cdot \sqrt{g\cdot H}\)

The expression to determine the velocity of cart A is \(v_{A} = 2\cdot \sqrt{g\cdot H}\). \(\blacksquare\)

b) We apply the same approach used in part b) to find the final velocity:

\(\frac{1}{2}\cdot (2\cdot M) \cdot v_{B}^{2} = (2\cdot M)\cdot g \cdot H\) (2)

Now we clear \(v_{B}\) and simplify the resulting expression:

\(v_{B} =\sqrt{2\cdot g\cdot H }\)

The expression to determine the velocity of cart B is

\(v_{B} =\sqrt{2\cdot g\cdot H }\). \(\blacksquare\)

c) The final velocity (\(v\)system is determined by principle of linear momentum conservation:

\(3\cdot M\cdot v = M\cdot 2\cdot \sqrt{g\cdot H}-2\cdot M\cdot \sqrt{2\cdot g\cdot H}\)

\(3\cdot v = 2\cdot (1-\sqrt{2})\cdot \sqrt{g\cdot H}\)

\(v = \left(\frac{1-\sqrt{2}}{3} \right)\cdot \sqrt{g\cdot H}\)

The final velocity of the carts after the collision is \(v = \left(\frac{1-\sqrt{2}}{3} \right)\cdot \sqrt{g\cdot H}\). \(\blacksquare\)

d) The collision is inelastic since a part of the energy of the entire system is lost when they stick together. \(\blacksquare\)

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Vector a3 = [3, -3, 0] is the one that, when removed, causes a change in the span. To determine which vector causes a change in the span when removed, we can check if any of the vectors can be expressed as a linear combination of the remaining vectors.

Let's consider each vector one by one:

Vector\(a_1\)= [1, 2, 2]:

To check if a1 can be expressed as a linear combination of the remaining vectors, we solve the equation:

\(c_2 * a_2 + c_3 * a_3 + c_4 * a_4 = a_1\)

Solving this equation, we find that a1 cannot be expressed as a linear combination of \(a_2, a_3, and a_4.\)

Vector a_2 = [2, 0, 0]:

We check if \(a_2\)can be expressed as a linear combination of the remaining vectors:

\(c_1 * a_1 + c_3 * a_3 + c_4 * a_4 = a_2\)

Solving this equation, we find that \(a_2\)  cannot be expressed as a linear combination of \(a_1, a_3,\) and \(a_4.\)

Vector \(a_3\) = [3, -3, 0]:

We check if a_3 can be expressed as a linear combination of the remaining vectors:

\(c_1 * a_1 + c_2 * a_2 + c_4 * a_4 = a_3\)

Solving this equation, we find that \(a_3\) can be expressed as a linear combination of a_1 and a_4:

\(3 * a_1 + (-3) * a_4 = a_3\)

Therefore, \(a_3\)can be expressed as a linear combination of the remaining vectors.

Vector a_4 = [1, 1, 1]:

We check if a4 can be expressed as a linear combination of the remaining vectors:

\(c_1 * a_1 + c_2 * a_2 + c_3 * a_3 = a_4\)

Solving this equation, we find that\(a_4\) cannot be expressed as a linear combination of\(a_1, a_2, and a_3.\)

Based on the above analysis, we can conclude that vector \(a_3\) = [3, -3, 0] is the one that, when removed, causes a change in the span.

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Answer:

Centripetal force is defined as, "the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation.

Explanation:

Just a few examples are the tension in the rope on a tether ball, the force of Earth's gravity on the Moon, friction between roller skates and a rink floor, a banked roadway's force on a car, and forces on the tube of a spinning centrifuge. Any net force causing uniform circular motion is called a centripetal force.

Explanation:

The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with the low frequency have a longer wavelength.

Wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore option Option B is correct.

According to the relationship between frequency and wavelength in electromagnetic waves, they are inversely proportional.

Therefore, if light wave A has a greater frequency than light wave B, light wave B will have a greater wavelength. This can be explained by the equation c = λν, where c represents the speed of light, λ represents wavelength, and ν represents frequency.

As frequency increases, wavelength decreases, and vice versa. Since wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore, the correct answer is B) Wave B.

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Your question is incomplete, but most probably your full question was,

Lightwave A has a greater frequency than light wave B. Which has a greater wavelength?

A) Wave A

B) Wave B

C) They're equal

D) Not enough info

Answer: Answer is D

I took the test little while back.

Answer:

Because the hot tea is hot from a microwave or coffee machine when iced tea is cold from ice in the tea.

Explanation:

A resistor with a resistance value of 91kΩ needs to be connected in series with the 68kΩ resistor to obtain a total equivalent resistance of 159kΩ.

To obtain an equivalent resistance (R_eq) of 159kΩ by connecting a resistor in series with a 68kΩ resistor, we can use the formula for the total resistance in a series circuit:

R_T = R1 + R2

Given:

R1 = 68kΩ

R_T = 159kΩ

We need to find the value of R2, the resistor that needs to be connected in series.

Using the formula:

159kΩ = 68kΩ + R2

To isolate R2, we can rearrange the equation:

R2 = 159kΩ - 68kΩ

R2 = 91kΩ

By connecting these two resistors in series, the total resistance will be the sum of their individual resistances, resulting in an equivalent resistance of 159kΩ.

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The Universe's most enigmatic, non-interacting substance is dark matter. The spinning of galaxies, cluster dynamics, and the biggest scale-structure in the entire Universe can all be attributed to its gravitational forces.

The mysterious motions of stars within galaxies will be able to be explained when dark matter is completely comprehended. Whether the universe is open (continues to expand), closed (expands and then collapses), or flat will depend on the presence of dark matter (expands and then stops).

It is estimated that dark energy is responsible for 73% of the universe's total mass and energy. Dark matter makes up another 23% of the universe, leaving only 4% of it to be made up of ordinary matter like stars, planets, and people.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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Designing investigations to predict the effect of hurricanes (D) best describes a scientific endeavor.

A scientific endeavor builds scientific knowledge by postulating theories that explains any phenomenon. It might differ from what was already known as the truth. In a scientific endeavor, a problem is first identified, observations are made, hypothesis are created based on the observations and experiments are conducted to prove the hypothesis.

The other options manly focusses on developing devices and technologies to prevent or withstand hurricanes which are examples of engineering endeavors.

Therefore, Designing investigations to predict the effect of hurricanes (D) best describes a scientific endeavor.

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In a food web, the removal of any trophic level upsets the balance within the web and can cause its eventual collapse. Because producers capture solar energy and convert it to food energy, their loss would affect every other level of the food web.

The removal of the producers would cause the collapse of the entire food web. Primary consumers or herbivores, which feed on producers directly, would die off. The next to be affected would be the secondary consumers or carnivores that eat the primary consumers. Higher level consumers would suffer as organisms from lower trophic levels start to die off. Decomposers would break down the bodies of dead organisms, returning their basic elements and compounds to the environment. However, even these dead organisms would run out and the entire food web would collapse.

Hope you like the answer.

Thermal energy is the energy associated with the movement of particles within a substance. The mechanisms by which thermal energy is generated in a solid are varied and include electric resistance heating, the release of thermal energy stored in the solid, endothermic chemical reactions, and exothermic chemical reactions.

However, one mechanism by which thermal energy is not generated in a solid is the absorption of neutrons.
Absorption of neutrons can lead to the formation of new isotopes, but it does not directly generate thermal energy. This is because neutrons do not carry an electric charge, and therefore cannot directly interact with the electrons in a solid to generate heat. Instead, the energy associated with the absorbed neutron is typically released through subsequent nuclear reactions, which can generate thermal energy indirectly.
In summary, while electric resistance heating, the release of thermal energy stored in the solid, endothermic chemical reactions, and exothermic chemical reactions are all mechanisms by which thermal energy can be generated in a solid, absorption of neutrons is not.

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Based on the graph;

The work done by friction as the block travels from x =-0.04 to x = −0.02 m is 0.01 J.

The force exerted on the block by the spring at x = −0.02 m is 1 N.

The stiffness of a spring is indicated by the spring constant, k. For various springs and materials, it varies. The stiffer the spring is and the harder it is to stretch, the larger the spring constant. The spring constant is a measure of the spring's stiffness.

The force exerted by a spring of spring constant, k is given below as follows:

F = - kx.

where;

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To find the total distance traveled by the car, we need to determine the distance covered during the initial deceleration phase and the distance covered during the subsequent constant speed phase.

First, let's find the distance covered during the deceleration phase:

Convert the initial and final speeds from km/h to m/s:

Initial speed = 90.0 km/h = 25.0 m/s

Final speed = 65.0 km/h = 18.1 m/s

Calculate the average speed during deceleration:

Average speed = (Initial speed + Final speed) / 2 = (25.0 m/s + 18.1 m/s) / 2 = 21.55 m/s

Calculate the time taken for deceleration using the given angular acceleration:

Angular acceleration = -2.2 rad/s^2

Time = 20 s

Use the formula for distance traveled during uniformly accelerated motion:

Distance = (Average speed) * (Time) + (1/2) * (Angular acceleration) * (Time)^2

Distance = (21.55 m/s) * (20 s) + (1/2) * (-2.2 rad/s^2) * (20 s)^2

Now let's find the distance covered during the constant speed phase:

Calculate the number of revolutions made by the tires:

Number of revolutions = 64

Calculate the circumference of the tires:

Circumference = π * Diameter

Circumference = π * 0.90 m

Calculate the distance covered during constant speed using the formula:

Distance = (Number of revolutions) * (Circumference)

Finally, we can calculate the total distance traveled by summing up the distances from the deceleration and constant speed phases.

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Yes, temperature affects how high a ball bounces. Temperature has a significant impact on the bouncing behavior of a ball.

When a ball bounces, it compresses upon contact with the surface, storing potential energy. This potential energy is then converted into kinetic energy as the ball rebounds. However, temperature affects the elasticity of the ball's material, which in turn affects its ability to store and release energy during a bounce.

At lower temperatures, the material of the ball becomes stiffer and less elastic. As a result, it is less capable of compressing and deforming upon impact, leading to a reduced amount of potential energy being stored. Consequently, the ball will not rebound as high as it would at higher temperatures. Conversely, at higher temperatures, the material of the ball becomes more elastic and pliable. This allows it to compress more upon impact, storing a greater amount of potential energy. As a result, the ball will rebound higher compared to when it is at lower temperatures.

In conclusion, temperature affects the elasticity of the ball's material, which directly influences how high it bounces. Lower temperatures result in reduced elasticity and lower rebound heights, while higher temperatures lead to increased elasticity and higher rebound heights.

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The terminal velocity of an object depends primarily upon its size.  Air resistance is proportional to the cross-sectional area of the object, which increases as the square of the object's size.

Terminal velocity is the maximum velocity that an object can reach when it falls through a fluid, such as air or water. As an object falls, it experiences two main forces: gravity, which pulls it down, and air resistance, which acts in the opposite direction and slows it down. The amount of air resistance that an object experience depends on several factors, including its size, shape, and composition. However, for most objects, size is the primary determinant of air resistance. This is because air resistance is proportional to the cross-sectional area of the object, which increases as the square of the object's size.

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Answer:

Explanation:

KE = 1/2mv^2

KE = 1/2(2.1)(10)^2

KE=105N

Answer:

what's the question

Explanation:

I don't understand the question

The photons from the cosmic microwave background (CMB) radiation are believed to have not interacted significantly with matter since the universe was approximately 380,000 years old. This event is known as recombination.

In the early stages of the universe, the high energy and density prevented light from traveling freely. Photons were continuously scattered by free electrons and protons, resulting in a dense, opaque plasma. However, as the universe expanded and cooled, it reached a point where electrons and protons combined to form neutral atoms. This process, called recombination, occurred when the universe was around 380,000 years old.

Following recombination, photons were no longer frequently scattered by matter, allowing them to travel freely through space. The photons we observe today as the CMB radiation have traveled across the universe for approximately 13.8 billion years since their last significant interaction with matter during recombination.

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