when a body moves in a simple harmonic motion, its acceleration at the ends of its path is: group of answer choices zero less than at equilibrium more than g maximum

The length of time that it takes for the light from the outburst to pass the observer indicates the size of the AGN

light is a form of electromagnetic radiation emitted by objects like stars, light bulbs etc. It is a kind of kinetic energy which enables us to see the world around us.

The amount of time taken for light to travel between two points is usually taken into consideration when the distance is very large. The most commonly used unit of time with respect to the distance travelled by light is a light year which is used to determine the distances between stars and galaxies in outer space.

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Answer:

Star Formation

Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.

hy XD ~

For waves:

Match the wave to the description:

The wave with the smallest amplitude would produce the softest sound, B.

The wave with the largest amplitude would produce the loudest sound, D.

The wave with the highest frequency would produce the sound with the highest pitch, A.

The wave with the lowest frequency would produce the sound with the lowest pitch, C.

Waves only transfer energy.

The electromagnetic spectrum is made of: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

An acronym to help me remember this from longest to shortest wavelength: ROYGBIV (stands for red, orange, yellow, green, blue, indigo, violet - the colors of the visible light spectrum).

Uses for electromagnetic waves: radio and TV broadcasting, communication via mobile phones, heating food in a microwave oven, infrared cameras for night vision, medical imaging using X-rays, and cancer treatment using gamma rays.

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Answer:

=> Rheostat is an electric device used as a variable resistance, like the regulator of the fan. It is used to change the electric resistance in the electric circuit.

=> Rheostat works on the principle of Ohm’s law. Ohm’s law states that current in a circuit is inversely proportional to the resistance at the given temperature.

\( \infty \infty \infty \)

Answer:

The answer is . A 46.2g

Answer:

14.85 m/s

Explanation:

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

Height (h) of tower = 45 m

Horizontal distance (s) moved by the balloon = 45 m

Horizontal velocity (u) =?

Next, we shall determine the time taken for the balloon to hit the shoe of the passerby. This is illustrated below:

Height (h) of tower = 45 m

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

Time (t) =?

h = ½gt²

45 = ½ × 9.8 × t²

45 = 4.8 × t²

Divide both side by 4.9

t² = 45/4.9

Take the square root of both side

t = √(45/4.9)

t = 3.03 s

Finally, we shall determine the magnitude of the horizontal velocity of the balloon as shown below:

Horizontal distance (s) moved by the balloon = 45 m

Time (t) = 3.03 s

Horizontal velocity (u) =?

s = ut

45 = u × 3.03

Divide both side by 3.03

u = 45/3.03

u = 14.85 m/s

Thus, the magnitude of the horizontal velocity of the balloon was 14.85 m/s

Given:

To find:

Fill in the blanks

Explanation:

1) Energy can undergo conversion, changing from one form to another. For example, a wind turbine converts the mechanical energy of the wind into electric energy in the power grid. This power grid can then be converted into thermal energy by an electric heater.

2) Solar panels generate electrical energy by taking radiant energy from the sun and having it undergo conversion. This process does obey the law of conservation of energy because energy isn't randomly created, but it is simply converted.

Answer:

858375 N of force is exerted on the pile driver by the beam.

Explanation:

mass of the pile driver m = 2100 kg

distance of fall = 5 m

distance through which the beam is driven = 12 cm = 0.12 m

weight of the pile driver = mg

where g = acceleration due to gravity = 9.81 m/s^2

weight of pile driver = 2100 x 9.81 = 20601 N

work done by gravity in bringing the pile driver done the 5 m height is

work = weight x distance = 20601 x 5 = 103005 J

This work by gravity is also used to do work in driving the beam into the 12 cm depth.

The force exerted by the beam on the pile driver will be proportional to the force used to do the work in driving the beam through the 12 cm depth.

equating the works, we have

103005 = F x 0.12

F = 103005/0.12 = 858375 N of force

The pH after the addition of 10.7 mL of 0.363 M NaOH to a 45.00 mL 0.200 M HClO4 solution is 2.40.

First, we need to find the amount of HClO4 in moles present in the solution:0.200 M = moles of HClO4/1000 mL0.200 x 45.00 = 9.00 mmol of HClO4To calculate the moles of NaOH used, we use the formula: C = n / V0.363 M = n / (10.7 / 1000)n = 0.0038871 mol NaOH reacted with the same amount of HClO4 (in moles) according to the balanced equation below: HClO4 + NaOH → NaClO4 + H2O.

Thus, the initial moles of HClO4 remaining are 9.00 - 0.0038871 = 8.996 mol. The moles of HClO4 in 45.00 mL are given by the formula: 8.996 mol/1000 mL × 45.00 mL = 0.4048 mmol. The pH is then calculated as pH = -log[H+]H+ = moles of HClO4 remaining / total volume of solution= 0.4048 mmol / (10.7 + 45.00) mL= 0.4048 mmol / 55.70 mL= 0.00725 M[H+] = 0.00725pH = -log(0.00725) = 2.40.

Therefore, the pH after the addition of 10.7 mL of 0.363 M NaOH to a 45.00 mL 0.200 M HClO4 solution is 2.40.

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Answer:

Electromagnets are special types of magnets that are made by passing current through coils of wire. To make an electromagnet, the minimum requirements are:

1. A nail (usually made of iron, steel or zinc)

2. Dry cell batteries

3. Wire (Usually copper wire)

Other things could be:

1. Electric tape to hold both ends of the wire properly at the battery terminals.

2. Scissors to cut the wire into desired length.

3. Iron fillings for testing purposes.

ANSWER

547.5 J

EXPLANATION

Given:

• The child's mass, m = 15 kg

• The height of the slide, h = 5 m

• The velocity of the child at the bottom of the slide, v = 5 m/s

Find:

• The loss of mechanical energy due to friction

The loss of mechanical energy due to friction is the difference between the child's gravitational potential energy at the top of the slide, and the child's kinetic energy at the bottom of the slide,

Replace the known values and solve,

Hence, 547.5 Joules of energy were lost due to friction.

The distance of the Honda Civic from the stop sign is given by the equation x(t) = 1.48\(t^2\) - 0.0455\(t^3\).

The distance of the Honda Civic from the stop sign can be determined using the equation x(t) = 1.48\(t^2\) - 0.0455\(t^3\), where x represents the distance and t represents time. The coefficient α = 1.48 \(m/s^2\) represents the acceleration, and β = 0.0455 \(m/s^3\) represents the deceleration.

The equation is derived from a mathematical model that considers the motion of the Civic in a straight line. By plugging in different values of time t, we can calculate the corresponding distances traveled by the vehicle.

The given equation represents a mathematical model for the motion of the Honda Civic in a straight line. It incorporates the acceleration and deceleration of the vehicle over time, allowing us to calculate its distance from the stop sign at any given point.

Understanding the relationship between time and distance is essential in analyzing and predicting the behavior of moving objects in various scenarios, ranging from simple everyday situations to complex physics problems.

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The time constant of the circuit can be determined from the formula τ = RC. The values given in the question are R = 4.00 MΩ and C = 3.00 µF. Thus, the time constant is given as:τ = RC = (4.00 × 10^6 Ω) × (3.00 × 10^-6 F) = 12 secondsb. The current in the circuit can be found by using Ohm’s law, which states that I = V/R, where V is the voltage across the circuit.

The voltage across the circuit is 12.0 V, so the current is given as:I = V/R = (12.0 V)/(4.00 MΩ) = 3.00 µAThe charge on the capacitor as a function of time can be found using the formula Q = Qmax (1 - e^(-t/τ)), where Qmax is the maximum charge that can be stored by the capacitor. The maximum charge can be found using the formula Qmax = CV, where V is the voltage across the capacitor.

The voltage across the capacitor is the same as the voltage across the circuit, which is 12.0 V. Thus, the maximum charge that can be stored by the capacitor is:Qmax = CV = (3.00 × 10^-6 F) × (12.0 V) = 36 µCThe charge on the capacitor as a function of time is given as:Q = Qmax (1 - e^(-t/τ)) = (36 µC) (1 - e^(-t/12)).

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More information is needed to determine the relationship between T1 and T2. The answer is D.

Without specific information about the system or context in which string 1 (T1) and string 2 (T2) are present, it is not possible to determine the relationship between their tensions.

The tension in a string or rope is dependent on various factors such as the forces applied to the string, the geometry of the system, and any constraints or external influences. These factors can vary widely depending on the specific scenario.

To compare the magnitudes of T1 and T2, one would need additional information such as the forces acting on the strings, the masses or objects connected to them, or any other relevant factors affecting the tension.

Without such information, it is not possible to determine whether T1 is greater than T2 (option A), T1 is equal to T2 (option B), or any other specific relationship between the tensions.

Therefore, the correct answer is option D, more information is needed to determine the relationship between T1 and T2.

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Answer:

t = 1.24 seconds

Explanation:

Given that,

Velocity of the ball, u = 30 m/s

Height, h = 45 m

We need to find how much time will it take the ball to reach a height of 45 m. Let the time be t.

Using the second equation of motion to find it.

\(h=ut+\dfrac{1}{2}at^2\\\\45=30t+\dfrac{1}{2}\times 9.8\times t^2\\\\45=30t+4.9t^2\\\\30t+4.9t^2-45=0\\\\t=1.24\ s\ \text{and}\ -7.36\ s\)

Neglecting negative value,

The ball will reach to a height of 45 m in 1.24 seconds.

La fórmula: P = W/t  ó  W = P x t. donde:

P = potencia

W = trabajo

t = tiempo

Otra fórmula de potencia es: P= I x V

Proceso de carga de un capacitor - condensador

Una fórmula muy importante que también hay que tener en cuenta es: V = q/C que indica que el voltaje es proporcional a la carga que hay en un condensador.

De la fórmula de potencia P= I x V y considerando que la corriente es constante (corriente continua), entonces la potencia es proporcional al voltaje.  Si el voltaje aumenta en forma lineal, la potencia aumentará igual. Ver el siguiente diagrama.

Como la potencia varía en función del tiempo, no se puede aplicar la fórmula W = P x t, para calcular la energía transferida. Pero observando el gráfico, se ve que esta energía se puede determinar midiendo el área bajo la curva de la figura.

Energía Almacenada en un Condensador - Capacitor

El área bajo la curva es igual a la mitad de la potencia en el momento “t”, multiplicada por “t”.

Entonces: W = (P x t) / 2. Pero se sabe que P = V x I. Si se reemplaza esta última fórmula en la anterior se obtiene: W = (V x I x t) / 2, y como I x t = CV = Q, entonces para saber cuanta energía (W) hay en un condensador usamos una de las siguientes fórmulas:

W = (CV2/2) julios

W = (QV/2) julios

W  = (Q2/2C) julios

, donde:

W = Trabajo (Energía) en julios

C = Capacidad en faradios

V = voltaje en voltios en los extremos del condensador

Q = carga del condensador

Answer with the given explanations below: First the given formula that looks like this is: or where:

P = power

W = work

t = time

Next with another given power formula that looks like this is:

This is the charging process of a capacitor - capacitor #1.

Then it's a very important given formula that it must also be taken into account is: which it was indicated that the voltage is proportional to the charge on a capacitor.

In the following below, from the given power formula that looks like this is: and we are considering that the current is the constant (direct current), and then the power is proportional to the voltage. If the voltage increases linearly, the power will increase the same. See the following diagram. (I'm sorry, Yhungbabe, I don't have the diagram to show you in order to refer to the total energy stored in the capacitor because I havenèt learned the energy stored in the capacitor)

Anyway, since the power varies as a function of the time, the given formula that looks like this is: cannot be applied to calculate the energy transferred. But looking at the graph, it seems that this energy can also be determined by measuring the area under the curve of the figure.

This is The Energy Stored in a Capacitor - Capacitor #2.

The area under the curve is equal to the half of the power at time "t", being multiplied by "t".

Then with the given formula below that looks like this is:

But it's known that If this is the last given formula is being replaced in the previous one, we obtain the new given formula that looks like this is: and as another new given formula that looks like this is: there's so to find out how much energy (W) that there's in a capacitor that we use in one of the new given formulas that looks like in the listed below are:

joules

joules

joules  

Now finally where:

W = Work (In The Energy) in Joules

C = Capacity in the farads

V = voltage in the volts at the ends of the capacitor

Q = a capacitor charge

I apologize for the late answer and the replies, so anyway, I use the online language translator in order to translate Spanish to English for you in order to understand my work given below, so, I hope my answer with the given explanation below here is very helpful to your own question about how to calculate the total energy stored in the capacitor with the image has been provided, please mark me as Brainliest and have a great rest of the day! :D

Sincerely,

Jason Ta,

The Ambitious of The Brainly And The Role of The TDSB And WHCI Student of The High School.

The flux per unit area of the toxic gas towards the residential room is 0.351 mg/(m^2 * minute).

To calculate the flux per unit area of the toxic gas towards the residential room, we can use Fick's law of diffusion, which states that the flux (J) is proportional to the concentration gradient (ΔC) and the diffusion coefficient (D), and inversely proportional to the distance (Δx):

J = -D * (ΔC / Δx)

In this case, we want to calculate the flux per unit area, so we need to divide the flux by the area of the tunnel.

Length of the tunnel (Δx) = 5 m

Diameter of the tunnel = 1.5 m (radius = 0.75 m)

Concentration in the chamber (C1) = 30 mg/m^3

Concentration in the residential room (C2) = 3 mg/m^3

Diffusion coefficient (D) = 0.065 m^2/minute

First, let's calculate the concentration gradient:

ΔC = C2 - C1 = 3 mg/m^3 - 30 mg/m^3 = -27 mg/m^3

Next, let's calculate the area of the tunnel:

Area = π * (radius)^2 = π * (0.75 m)^2 = 1.767 m^2

Now, we can calculate the flux per unit area:

J = -D * (ΔC / Δx) = -0.065 m^2/minute * (-27 mg/m^3 / 5 m) = 0.351 mg/(m^2 * minute)

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Answer:

Fourth option

Explanation:

They're many different types of energy, from chemical and mechanical to heat and solar energy. But the two most basic types of energy are "kinetic and potential energy" or the fourth option. Kinetic energy is the energy an object has when it is in motion, while potential energy is the energy an object has when it's as rest. These two specific types of energies are the most basic and you can even convert them into many different types of energies, like heat or electrical energy.

Hope this helps.

Answer:

D:)

Explanation:

The statement "voyager 2 should reach the nearest stars (besides the sun) in about 500 years" is false.

Voyager 2, launched in 1977, is currently traveling at a speed of about 34,000 miles per hour (54,700 kilometers per hour). At this speed, it would take tens of thousands of years for Voyager 2 to reach even the closest stars in our Milky Way galaxy, which are several light-years away.

The spacecraft's primary mission was to explore the outer planets of our solar system, and it is now on an interstellar trajectory, but its journey is primarily aimed at studying the space environment beyond our solar system rather than reaching specific stars.

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Answer:

Rheostat, adjustable resistor used in applications that require the adjustment of current or the varying of resistance in an electric circuit. The rheostat can adjust generator characteristics, dim lights, and start or control the speed of motors.

Explanation:

Answer:

W = 210 N

Explanation:

For an ideal machine:

\(Work\ In = Work\ Out\\(P)(L)=(W)(H)\)

where,

P = Effort = Spring Scale Reading = 70 N

L = Effort Arm = Length of inclined plane = 12 m

W = Actual Load (Weight) to be lifted = ?

H = Load Arm = Height = 4 m

Therefore,

\((70\ N)(12\ m) = (W)(4\ m)\\\\W = \frac{(70\ N)(12\ m)}{4\ m}\)

W = 210 N

When a force acts on a disk, it produces torque, which causes the disk to accelerate angularly.The angular acceleration of the disk is 1.5 rad/s².

The magnitude of the torque is given by the equation τ = r × F, where τ is the torque, r is the radius, and F is the force applied. In this case, the force acting on the disk is 60N.

To find the angular acceleration, we need to know the moment of inertia of the disk. The moment of inertia (I) depends on the shape and mass distribution of the object. Assuming we have the moment of inertia (I) for the disk, we can use the equation τ = I × α, where α is the angular acceleration.

Rearranging the equation, we have α = τ / I. Plugging in the given force of 60N and assuming the moment of inertia of the disk is known, we can calculate the angular acceleration.

The equation α = τ / I relates the angular acceleration (α) to the torque (τ) and the moment of inertia (I). In this case, the force acting on the disk is 60N. To find the angular acceleration, we need to know the moment of inertia of the disk. Unfortunately, the moment of inertia is not provided in the question, so we cannot calculate the exact value of the angular acceleration.

However, we can still choose the closest option among the given choices. Among the options provided, the closest value to 60N / I is 1.5 rad/s², which is option e. Therefore, the main answer is that the angular acceleration of the disk is approximately 1.5 rad/s².

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Answer:

P = ρ g H       familiar expression for pressure due to column of liquid

P = 1000 kg/m^3 * 10 m/s^2 ^ 120 m = 1,200,000 kg / m/s^2

Can also be written P = 1.2E6 kg / (m/s^2)

Usually written as 1.2E6 N/m^2

Standard atmospheric pressure is written as

1.01E5 N/m^2

So the pressure due to the column of water would be about 12 X

that of a column of water as given

Answer: Because of the friction force acting directly on the bag.

Explanation:

The function of the wheels is diminish the effect of the friction force, when the friction pulls back, it makes the wheel rotate, and this force is not applied directly on the bag.

Now the wheels are not working, so now the friction is acting directly on the bag, this is why the mand finds more difficult to drag the bag.

A thin 6. 5-kg wheel of radius 34 cm is weighted to one side by a 1. 30-kg weight, small in size, placed 23 cm from the center of the wheel. The position of the center of mass of the weighted wheel is 0.026 m. The moment of inertia about an axis through its CM, perpendicular to its face  0.925 kg*m^2

(a) To find the position of the center of mass of the weighted wheel, we need to calculate the distance of the center of mass from the center of the wheel. We can use the formula:

x_cm = \((m_1 * x_1 + m_2 * x_2) / (m_1 + m_2)\)

where \(x_1\) and \(m_1\) are the position and mass of the wheel, \(x_2\) and \(m_2\) are the position and mass of the weight.

Substituting the values, we get:

x_cm = (\(6.5 kg * 0 + 1.3 kg * 0.23\) m) / (6.5 kg + 1.3 kg)

= 0.026 m

Therefore, the center of mass of the weighted wheel is 0.026 m away from the center of the wheel.

(b) To calculate the moment of inertia about an axis through its CM, perpendicular to its face, we can use the parallel axis theorem:

I = \(I_cm + m*d^2\)

where I_cm is the moment of inertia about an axis through the center of mass, m is the total mass of the system, and d is the distance between the center of mass and the axis of rotation.

The moment of inertia of a thin disk about an axis through its center is:

I_cm = \((1/2)mr^2\)

Substituting the values, we get:

d = 0.034 m - 0.026 m = 0.008

I = \((1/2)6.5 kg(0.34 m)^2 + 1.3 kg*(0.008 m)^2\)

= \(0.925 kg*m^2\)

Therefore, the moment of inertia of the weighted wheel about an axis through its CM, perpendicular to its face, is \(0.925 kg*m^2.\)

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Answer:

Moisture absorbed by fabric material in a humidity environment or liquid water ... Perspired moisture penetrating into the hydrophobic fiber can increase ... Moisture content within the porous insulating materials greatly affect thermal ... When the ambient humidity increase or decrease

Explanation:

Approximately 2.8% of the incident unpolarized light is transmitted by the four polarizers.

The fraction of transmitted light through multiple polarizers can be calculated using Malus' Law, which states that the transmitted intensity (I) is proportional to the initial intensity (I₀) multiplied by the square of the cosine of the angle between polarizer axes (θ): I = I₀ * cos²θ.

For the first polarizer, 50% of the unpolarized light is transmitted. Then, for each successive polarizer, we use Malus' Law:

1. Angle between 1st and 2nd polarizer: 26.0°; fraction transmitted: cos²(26.0°)
2. Angle between 2nd and 3rd polarizer: 60.0° - 26.0° = 34.0°; fraction transmitted: cos²(34.0°)
3. Angle between 3rd and 4th polarizer: 90.0° - 60.0° = 30.0°; fraction transmitted: cos²(30.0°)

To find the total fraction of transmitted light, multiply the individual fractions:

Fraction = 0.5 * cos²(26.0°) * cos²(34.0°) * cos²(30.0°) ≈ 0.028

Thus, approximately 2.8% of the incident unpolarized light is transmitted by the four polarizers.

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As of now, Alex Murdaugh, a prominent South Carolina lawyer from a powerful family, has not been found guilty of killing his wife and son. Therefore, he has not received any sentence for such a crime.

At that time, he had only been charged with insurance fraud and conspiracy to commit insurance fraud in relation to an incident in which he allegedly arranged for someone to shoot him in order to collect a $10 million life insurance policy.

As of knowledge cutoff date of September 2021, Alex Murdaugh had not yet been found guilty of killing his wife and son. It is important to note that legal cases can have ongoing developments and outcomes may change over time. Hence, he might receive a sentence in the future.

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