what is a simple pendulum​

Answer:

Explanation:

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Answer:

Volume is 12 cm³

Explanation:

\(volume = \frac{mass}{density} \\ \)

mass » 48 g

density » 4 g/cm³

\(volume = \frac{48}{4} \\ \\ = 12 \: {cm}^{3} \)

A mass is a fixed quantity of matter. The weight that mass feels depends on the Gravitational force acting on the mass.

Weight is the upward force a mass applies due to gravity. The strength of an object's gravitational pull, or its weight, can also be referred to as weight. Gravity is a factor in weight. An object's mass is the quantity of material that makes it up. Gravity has no effect on mass. Weight is the force of gravity acting on (drawing down) a particular object (or mass). We are aware that weight is the product of mass and the applied gravitational force. This means that W = MG, where w is the weight, M is the mass, and G is the gravitational force. This also means that "the weight of an object is directly proportionate to its mass" is another possible interpretation.

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To calculate the horizontal distance the projectile will fall, we need to determine the time of flight first. The equation for vertical motion (ignoring air resistance) can be written as: y = v₀y * t + (1/2) * g * t²

Where: y = vertical displacement (which is -49.0 m since the projectile is falling) v₀y = initial vertical velocity (which is 0 m/s since the projectile is launched horizontally) g = acceleration due to gravity (approximately -9.8 m/s²) t = time of flight. Substituting the known values into the equation:

-49.0 m = 0 * t + (1/2) * (-9.8 m/s²) * t²

-49.0 m = -4.9 m/s² * t²

Simplifying the equation:

t² = 49.0 m / (4.9 m/s²)

t² = 10 s²

t = √(10) s

t ≈ 3.16 s. Now, we can use the horizontal velocity to calculate the horizontal distance: v = d / t. Rearranging the equation: d = v * t. Given that the horizontal velocity (v) is 20.0 m/s and the time of flight (t) is approximately 3.16 s, we can substitute these values into the equation: d = 20.0 m/s * 3.16 s. d ≈ 63.2 m. Therefore, the projectile will fall approximately 63.2 meters horizontally.

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Answer:

Initial y-component of speed

Vy = 28 * sin 30 = 14 m/sec vertically

1/2 m Vy^2 = 2 m g h    conservation of energy of y-component

h = Vy^2 / (2 * g) = 14^2 / (2 * 9.8) = 10 m

Answer:

Its inductance L = 166 mH

Explanation:

Since a current, I = 0.698 A is obtained when a voltage , V = 5.62 V is applied, the resistance of the coil is gotten from V = IR

R = V/I = 5.62/0.698 = 8.052 Ω

Since we have a current of I' = 0.36 A (rms) when a voltage of V' = 35.1 V (rms) is applied, the impedance Z of the coil is gotten from

V₀' = I₀'Z where V₀ = maximum voltage = √2V' and I₀ = maximum current = √2I'

Z = V'/I' = √2 × 35.1 V/√2 × 0.36 V = 97.5 Ω

WE now find the reactance X of the coil from

Z² = X² + R²

X = √(Z² - R²)

= √(97.5² - 8.05²)

= √(9506.25 - 64.8025)

= √9441.4475

= 97.17 Ω

Now, the reactance X = 2πfL where f = frequency of generator = 93.1 Hz and L = inductance of coil.

L = X/2πf

= 97.17/2π(93.1 Hz)

= 97.17 Ω/584.965 rad/s

= 0.166 H

= 166 mH

Its inductance L = 166 mH

The induced EMF in a coil is equivalent to the time rate of change of the magnetic flux linkage with that coil. The emf linked with the coil after a time limit of 5 seconds is 1388 volts.

The formula is given by;E= dΦ/dt

The magnetic flux linked with the circuit initially is given analytically as 12t3+2t2+3t+1. Therefore; Initial flux, Φi = 12t3+2t2+3t+1The magnetic flux linked after a timing of 5 seconds is given analytically as 23t3+3t2+t+4.

Therefore;Final flux, Φf = 23t3+3t2+t+4

The rate of change of flux over time; dΦ/dt = (23t3+3t2+t+4) - (12t3+2t2+3t+1) = 11t3+t2-t+3

We can then find the emf by;E= dΦ/dt = 11t3+t2-t+3

After a time limit of 5 seconds, the emf can be calculated by; E = 11(5)3 + (5)2 - 5 + 3 = 1388 volts

Therefore, the emf linked with the coil after a time limit of 5 seconds is 1388 volts.

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In order to form a hypothesis that would illustrate the relationship between mass and kinetic energy, we first need to understand what kinetic energy and mass are and how they are related. Kinetic energy is the energy that an object possesses due to its motion, and is given by the formula KE = 0.5mv², where m is the mass of the object and v is its velocity. Mass, on the other hand, is a measure of the amount of matter in an object.

The relationship between mass and kinetic energy is direct, meaning that as mass increases, so does kinetic energy, provided that velocity remains constant. Similarly, if velocity increases, then kinetic energy will increase as well, provided that mass remains constant.

The hypothesis that illustrates this relationship can be stated as follows:If the mass of an object is increased, then the kinetic energy of the object will also increase, because kinetic energy is directly proportional to mass, assuming velocity remains constant.In other words, if the mass of an object is doubled, then its kinetic energy will also double, assuming that its velocity remains constant. This hypothesis can be tested through experiments that involve measuring the kinetic energy of objects with different masses, but with the same velocity.

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If the mass of an object increases, then its kinetic energy will increase proportionally because mass and kinetic energy have a linear relationship when graphed.

1. Alpha decay: Helium nucleus

2. Beta decay: Electron

3. Gamma decay: Is a form of electromagnetic radiation

4. Does NOT result in a new substance (atomic number): Alpha decay

5. Minimal penetration through solids: Beta decay

1. Alpha decay: In alpha decay, a radioactive nucleus emits an alpha particle, which consists of two protons and two neutrons, essentially a helium nucleus.

2. Beta decay: In beta decay, a neutron in the nucleus transforms into a proton, and an electron (beta particle) is emitted. The emitted electron is associated with beta decay.

3. Gamma decay: Gamma decay is a process where a nucleus transitions from a higher energy state to a lower energy state, releasing gamma radiation.

Gamma radiation is a form of electromagnetic radiation, characterized by high energy and no charge.

4. Does NOT result in a new substance (atomic number): Alpha decay results in the emission of an alpha particle, which consists of two protons and two neutrons.

5. Minimal penetration through solids: Beta particles (electrons) have a relatively low mass and charge, making them more easily absorbed by solids compared to alpha particles.

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About 4.5 billion years ago, a dense cloud of interstellar gas and dust gave rise to our solar system. The supernova shockwave from a nearby exploding star, or supernova, may have caused the cloud to collapse.

Within the initial 10 million years of the solar system's formation, Jupiter and Saturn are assumed to have formed first and fast. Rocky planets start to develop in the warmer, star-closer regions of the disk. There isn't much gas left for the terrestrial planets to accrete after the formation of the icy giants.

Let's, therefore, travel back in time more than 4.6 billion years to the time before Earth, Sun, and even Solar System existed. We were surrounded by gas and dust, most likely in one of the spiral arms. Do you want to know how it appeared? Your favorite Hubble Space Telescope images should be helpful.

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Our solar system was created from a massive cloud of interstellar gas and dust some 4.5 billion years ago. The collapse of the cloud may have been triggered by the supernova boom from a nearby exploding star.

Jupiter and Saturn are believed to have formed initially and quickly during the first 10 million years of the solar system's creation. In the warmer, star-closer parts of the disc, rocky planets begin to form. After the development of the icy giants, there is not much gas left for the terrestrial planets to accrete. Therefore, let's go back in time more than 4.6 billion years to the period before the Earth, Sun, and even the Solar System were created. Dust and gas were all around us called supernova.

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Answer:

the acceleration due to gravity, g is zero (0)

the time of the motion is 0.2 s

Explanation:

Given;

initial velocity of the student, u = 15 m/s

distance traveled by the student, x = 3 m

The motion of the student is directed towards the horizontal and the acceleration due to gravity, g is zero (0).

The time of the motion is calculated as;

x = ut + ¹/₂gt²

x = ut + ¹/₂(0)t²

x = ut

t = x/u

t = 3 / 15

t = 0.2 s

Therefore, the time of the motion is 0.2 s

Answer:

a moderate base

Explanation:

Milk of magnesia is popularly known as magnesium hydroxide. Magnesium hydroxide Mg(OH)₂ is used as an anti-acid in toothpaste and medically as a mild laxative.

Its pH values range between 10- 11 on the pH scale.

A solution with pH value of 7 is neutral(i.e. neither acidic nor basic.

A pH value which is less than 7 is acidic while a pH value greater than 7 is basic.

For a pH value between 12 -14 on the pH scale is said to be a strong base.

Since Milk of magnesia Mg(OH)₂ pH values ranges between 10- 11 on the pH scale, it is known to be moderately basic.

Answer:

Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. ... The amount of energy in matter can be measured with a thermometer.

Explanation:

Answer:

Matter either loses or absorbs energy when it changes state.

Answer:

His distance would be 80 or 13 something. I dont really understand this question. Just be sure to look into other answers pls.

Explanation:

I've just been doing that now, this might be a bit late but the answere is 0.25g/s

The steam engine moves a piston back and forth inside a cylinder using the force created by the pressure of the steam. A connecting rod and crank can convert this pushing force into a rotational force for wo

Because electric and diesel locomotives are faster, more effective, and simpler to operate, steam locomotives are no longer utilized to transport people or goods. The locomotives that are still in operation are historical artifacts from the 1800s that serve as a great reminder of how far we've come.

Simply explained, steam engines generate heat energy by boiling water and producing steam using fire and coal (chemical energy). This heat energy is then used to push the cylinder and piston, which in turn moves the wheels (kinetic).

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Answer:

Tstring = 343.35 [N]

Explanation:

Since the block is in equilibrium, we can say that the sum of the forces on the Y-axis or vertical is equal to zero.

∑Fy = 0

\(T_{string}-W=0\)

where:

Tstring = tension of the string [N]

W = weight of the block [N]

And the weight can be calculated multiplying the mass of the block by the gravity acceleration.

Now replacing:

\(T_{string}=m*g\\T_{string}=35*9.81\\T_{string}=343.35[N]\)

An object's mass, rather than its weight is used to indicate the amount of matter it contains because weight is defined as the amount of force due to an existing field (In most cases, gravitational field) that is experienced by the body. The weight of the same body can be different in different environments it's observed.

However, the mass of the body is the exact measure of the amount of matter contained in a body. Which is constant, regardless of the environment, or conditions the body is observed.

Hence, for real-world calculations and experimentation, the mass of the body is considered to represent the amount of matter it contains rather than its weight.

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A control device that opens and closes during the normal operation of a system is referred to as a thermostat.

Among the given options, a thermostat best fits the description of a control device that opens and closes during the normal operation of a system. A thermostat is typically used to regulate temperature in various systems, such as heating or cooling systems. It consists of a sensor that detects the temperature and a switch that opens or closes based on the temperature readings.

The primary function of a thermostat is to maintain a desired temperature by controlling the operation of a system. When the temperature reaches a certain set point, the thermostat will close, allowing the system to turn on and heat or cool the environment. Conversely, when the temperature falls below the set point, the thermostat opens, shutting off the system to prevent excessive heating or cooling.

Thermostats are widely used in residential, commercial, and industrial settings to provide temperature control and energy efficiency. They play a crucial role in maintaining a comfortable and stable environment by continuously monitoring and adjusting the system's operation based on temperature fluctuations.

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The smallest lifetime that this nuclear-excited state can have is 5.26 x 10^-14 seconds.

The uncertainty in energy, represented by the symbol ΔE, is related to the lifetime of a state, represented by the symbol τ, by the formula ΔEΔt ≥ ħ/2, where ħ is the reduced Planck constant. For a nuclear state with uncertainty ΔE = 2.5 eV, we can rearrange the formula to solve for the smallest lifetime:

Δt ≥ ħ/2ΔE

Plugging in the values, we get:

Δt ≥ (6.626 x 10^-34 J s)/(2 x 2.5 eV x 1.602 x 10^-19 J/eV)

Simplifying, we get:

Δt ≥ 5.26 x 10^-14 s

Therefore, the smallest lifetime that this nuclear-excited state can have is 5.26 x 10^-14 seconds.

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Answer:

the answer is 100%!

your welcome

The average speed of the sea floor expansion during this time has been approximately 8.03 x \(10^{-7\) meters per second.

The sea floor expansion can be calculated using the age of the oldest rocks and the width of the strip. In this case, the oldest rocks are 750,000 years old, and the strip is 19 km wide. To find the average speed of expansion, we need to divide the width of the strip by the age of the rocks.

Average speed of sea floor expansion = (Width of the strip) / (Age of the oldest rocks)

Average speed = (19 km) / (750,000 years)

To convert years to seconds, multiply by the number of seconds in a year (365.25 days/year * 24 hours/day * 60 minutes/hour * 60 seconds/minute):

750,000 years * 365.25 * 24 * 60 * 60 = 23,652,060,000 seconds

Now, divide the width of the strip by the age of the rocks in seconds:

Average speed = (19,000 meters) / (23,652,060,000 seconds)

Average speed ≈ 8.03 x \(10^{-7\) meters/second

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The true statement about a 2 kg rock and a 1 kg rock are dropped near the surface of the earth is both rocks will accelerate at the same rate.

Аccording to the first lаw, аn object of lаrger mаss hаs lаrger inertiа, аnd аccording to the second lаw, the аccelerаtion of аn object is the rаtio of the force to the mаss. Consider thаt the force on the 2 kg rock is F1 and that on the 1 kg rock is F2.

It is given that the force of gravity on a 2 kg rock is twice the force on a 1 kg rock. Therefore, you can write that

F1 = 2F2

F2 = \(\frac{F1}{2}\) .... (1)

The expression for the acceleration of the 2 kg rock can be written as

a1  = \((\frac{F1}{2kg})\)  .... (2)

The expression for the acceleration of the 1 kg rock can be written as

a2 = \((\frac{F2}{1kg})\)  

Substituting the value of equation (i) in the above equation,

a2 = \((\frac{\frac{F1}{2} }{1 kg} )\)

a2 =  \((\frac{F1}{2kg})\) .... (3)

Thus, from equаtions (ii) аnd (iii), it is cleаr thаt а1 =а2. So, the two rocks fаll аt the sаme speed becаuse they hаve the sаme аccelerаtion.

Your question seems incomplete. I could not find the exact question details online so I answered in general based on the keywords.

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Answer:

False, true

Explanation:

Answer:

an unbalanced force is always needed to a moving object FALSE

an object in motion will stay in motion unless it is acted on by an unbalanced force TRUE

Explanation:

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The resistance of the copper wire is 0.161 Ω. The resistance of a material depends on various factors, including its length, cross-sectional area, and temperature.

What is Resistance?

Resistance is a measure of how much a material opposes the flow of electric current. It is defined as the ratio of the voltage applied to a conductor to the current flowing through it, and is measured in ohms (Ω). Materials with high resistance are poor conductors of electricity, while materials with low resistance are good conductors.

We can use the formula for resistance of a wire:

R = (ρ * L) / A

where R is resistance, ρ is resistivity, L is length of the wire, and A is its cross-sectional area.

We know that the wires are identical, so they have the same length and cross-sectional area. Therefore, their resistances are proportional to their resistivities:

R_aluminum / R_copper = ρ_aluminum / ρ_copper

We can rearrange this to solve for the resistance of the copper wire:

R_copper = R_aluminum * ρ_copper / ρ_aluminum

Plugging in the given values, we get:

R_copper = 0.263 Ω * (1.72 x 10^-8 Ω·m) / (2.82 x 10^-8 Ω·m) = 0.161 Ω

Therefore, the resistance of the copper wire is 0.161 Ω.

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Option (1) cold fluid. The cold fluid limits heat transfer rate of the heat exchanger. This is because it has a lower density, specific heat, and also a thermal conductivity than the hot fluid.

It means that the cold fluid has a relatively low heat transfer capacity, and since it is flowing at a higher velocity than the hot fluid, it has a lower effective heat transfer capacity per unit time. The density of both the liquids is quite similar and therefore, it  doesn't have a very serious impact on the heat transfer rate.

The flow rate of the cold medium is greater than that of hot medium, and also it reduce the overall effective heat transfer capacity of the heat exchanger.

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Organic foods refer to agricultural products that are grown and processed using natural methods, without the use of synthetic chemicals such as pesticides, fertilizers, or genetically modified organisms (GMOs).

Organic farming practices focus on using renewable resources and conserving soil and water to produce healthy and sustainable crops. Organic foods are produced according to strict government standards and regulations, which require that the food be grown and processed without the use of synthetic chemicals or genetically modified ingredients.

Organic foods may also be produced using sustainable farming practices that promote the health of the soil, water, and ecosystem. The use of synthetic chemicals in conventional farming has raised concerns about the safety of the food and the long-term impact on the environment.

Organic foods are considered to be healthier and safer for consumption, and they are often more expensive due to the higher costs associated with organic farming practices.

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Answer:

According to Newton's third law of motion, the reaction force is equal to the action force.

Explanation:

Newton's third law of motion states that for every action there is an equal and opposite reaction. This means that if one object exerts a force on a second object, the second object exerts an equal force in the opposite direction. When Plate X pushes on Plate Y with the action force (Fx), Plate Y must push back with an equal force (Fy).

Therefore, the best explanation is that according to Newton's third law of motion, the reaction force is equal to the action force.

For every action, there has equal and opposite reaction - this statement best describes the action and reaction forces on the plates.

As a result of this interaction, there are two forces: one from plate X and one from plate Y. The third law of motion of Newton deals with these two forces, which are referred to as action and reaction forces. Newton's third law is officially expressed as follows: There is an equal and opposite reaction to every action.

The implication of the statement is that there are always two forces acting on the two interacting objects. The force acting on the first object is equal in size to the force acting on the second. The force acting on the first object is acting in the opposite direction to the force acting on the second object. Force pairs—equal and opposing action-reaction force pairs—always exist in pairs.

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I will go through each statement and provide a true or false answer for an electron.
(a) True

(b) False

(c) True

(d) True

(e) True

(a) True. An electron is a quantum particle that exhibits both particle-like and wave-like behaviour, depending on the experiment being conducted.
(b) False. An electron's rest energy is not zero. It has a rest mass, which means it has a non-zero rest energy according to the equation E=\(mc^2\).
(c) True. An electron carries energy in its motion, both kinetic energy due to its movement and potential energy due to its position in an electric field.
(d) True. An electron carries momentum in its motion, which can be described as the product of its mass and velocity (p=mv) in classical mechanics, or as the product of its wavelength and Planck's constant divided by 2π in quantum mechanics (p=h/(2πλ)).
(e) True. The motion of an electron is described by a wave function, which has a wavelength and satisfies the Schrödinger wave equation. This wave function provides information about the electron's position and momentum in a probabilistic manner.

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