When the mass of the cylinder increased by a factor of 3, from 1. 0 kg to 3. 0 kg, what happened to the cylinder’s gravitational potential energy? It decreased by a factor of 3. It decreased by a factor of 2. It increased by a factor of 2. It increased by a factor of 3.

Out of the given situations, the one that exhibits positive feedback and can cause a further increase in temperature is option C - An increase in temperature causes methane ice in the oceans to melt,

releasing this methane, a greenhouse gas to the atmosphere. This situation results in a positive feedback loop where an increase in temperature causes more methane to be released,

which further increases the temperature, causing more methane to be released. Methane is a potent greenhouse gas that traps heat in the atmosphere, thus leading to an increase in temperature.

As the temperature increases, more methane is released, causing a further increase in temperature, leading to a never-ending cycle of positive feedback.

It is important to note that this situation can have severe consequences as it can lead to a runaway greenhouse effect, which can have catastrophic effects on the climate.

Therefore, it is crucial to take steps to mitigate the release of greenhouse gases into the atmosphere and work towards reducing the global temperature.

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Answer:

electric current is derived unit.

Explanation:

According to the definition of electric current, it appears to be a derived quantity. Charge on the other hand seems more fundamental than electric current.

Answer:

The car moving with speed 50 mph

Explanation:

We are given that

Distance, s=280 feet=85.3 m

1 feet=0.3048 m

Coefficient of kinetic friction=\(\mu_s=0.3\)

1 m/s=2.237 mph

We have to find the speed of car moving.

Speed, v=\(\sqrt{2\mu_s gs}\)

Where \(g=9.8ms^{-2}\)

Using the formula

Speed of the car,v=\(\sqrt{2\times 0.3\times 9.8\times 85.3}\)

Speed of the car,v=22.4 m/s

Speed of the car, v=\(22.4\times 2.237\approx 50 mph\)

Hence, the car moving with speed 50 mph

Option  d is true.

Fill in the blanks:

1. Amplitude and distance

2. Medium

3. Attract

4. Insulator

True or false:

1. False

2. True

3. True

4. True

Match the following:

A matches 4, B matches 3 , C matches 2 and D matches 1.

Please mark as brainalist answer ......;-;

Answer:

a, b, a, c, that should be the order from top to bottom

When an inductor is connected to an AC voltage source with EMF v0 and frequency f, the amplitude of the resulting current in the inductor is i0.

An inductor is a passive electrical component that stores energy in a magnetic field. When an inductor is hooked up to an AC voltage source with an EMF V0 and frequency f, the current amplitude in the inductor is given by I0 = V0 / (2 * pi * f * L), where L is the inductance of the inductor. This equation is known as the inductive reactance and represents the opposition to the flow of current in an inductor due to its magnetic properties. The higher the frequency of the AC voltage, the greater the inductive reactance and the lower the current amplitude in the inductor. Inductors are commonly used in electrical circuits to filter or smooth out AC signals or to store energy in power supplies.

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The glob would have kinetic energy as it is falling modelled by graph f.

We know that the kinetic energy has to do with the energy that is possessed by a body by virtue of the fact that the body is in motion. We know that kinetic energy is one of the forms of mechanical energy. The term mechanical energy has to do with energy that is at rest or in motion. The energy that is at rest is called the potential energy.

We have been told in the question that a glob of slime is launched or dropped from the edge of a cliff. We have to note that the kinetic energy of the object is going to increase as it is falling to the ground. It then follows that the glob would have its maximum kinetic energy when the glob must have fallen to the ground.

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The ice melts because Thermal energy from Jan’s hand is transferred to the ice.

Thermal energy is the energy due to temperature difference.

Thermal energy flows from hotter to colder bodies.

The ice Jan is holding melts because heat is transferred from his hands t the ice.

In conclusion, thermal energy flow causes melting.

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Answer:

its b

Explanation:

because the heat from your hand makes the ice melt!

Answer:

b

Explanation:

because electromagnetic waves can travel in vacuum as they don't require particles to transfer energy from one point to another. they can also travel through mediums such as the wall or air, if not how do radio waves transfer energy in this hyper advanced world? through the air

hope this helps

please mark it brainliest

Answer:

Distance: 1600 m Displacement: 0

Explanation:

The distance is because He ran 400 meters 4 times getting 1600 m

4*400=1600

The displacement is 0 because displacement is the total distnce away from the starting point and since he ran laps around the track in the end he ended up in the same spot as last time.

Answer:

1788.402 MJ

Explanation:

Work done = Force (N) x distance (m)

First we have to convert distance into metres:

173.8 x 1000 = 173,800 m

Then plug these values into the equation above:

173,800 x 10290 = 1788402000 J

The reason it's Joules (the unit for energy) is because work done = energy transferred

Now we have to convert Joules into Mega Joules:

1 J = 1/1000000 MJ

1788402000 J = 1788402000/ 1000000 = 1788.402 MJ

The stress (3.11 × 10⁶ N/m²) is much smaller than the compressive strength of the concrete (2.00 × 10⁹ N/m²). Young's modulus for concrete = 7.00 × 10⁹ N/m², Compressive strength of concrete = 2.00 × 10⁹ N/m², Coefficient of linear expansion of concrete = 1.2 × 10⁻⁵ /℃

(a) Stress in the cement on a hot day of 49.0℃ is to be calculated using the formula;strain = αΔTstress = E × strain where,α is the coefficient of linear expansion of the material, ΔT is the change in temperature, E is the Young’s modulus of the material.

Substituting the given values,ΔT = (49.0 - 12.0)℃ = 37.0℃strain = (1.2 × 10⁻⁵ /℃) × (37.0)℃ = 4.44 × 10⁻⁴stress = (7.00 × 10⁹ N/m²) × (4.44 × 10⁻⁴) = 3.11 × 10⁶ N/m².

Therefore, stress in the cement on a hot day of 49.0℃ is 3.11 × 10⁶ N/m².

(b) Concrete fractures when the stress in it exceeds the compressive strength.

The calculated stress (3.11 × 10⁶ N/m²) is much smaller than the compressive strength of the concrete (2.00 × 10⁹ N/m²).

Hence, the concrete does not fracture.

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Answer:

a=845.07 m/s2

Explanation:

m=0.142kg

F=120N

a=?

F=m*a /:m

a=F/m

a=120N/0.142kg

a=845,07m/s2

Answer:

a = 845.07 m/s²

Explanation:

As we know ,

as per newton's 2nd law:-

F = ma

therefore

a = F/m

given:

a = ?

F = 120N

m = 0.142 kg

procedure:-

a = 120/0.142

therefore :

a = 845.07 m/s²

Because different materials originate at various distances from the sun, different densities develop at various distances.

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True. Electromagnetic waves are a type of energy that can travel through space at the speed of light.

These waves have different wavelengths and frequencies, which determine their properties and behavior. The electromagnetic spectrum includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, each with its own unique frequency and wavelength. The different wavelengths and frequencies of electromagnetic waves give them different properties and uses in various fields, such as communication, medicine, and astronomy. The ability to manipulate electromagnetic waves by adjusting their wavelength and frequency is a fundamental principle behind many modern technologies. Therefore, it is true that electromagnetic waves come in many wavelengths and frequencies.

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Answer:

750J

Explanation:

Given parameters:

Mass of the object   = 0.15kg

Velocity of the object  = 100m/s

Unknown:

Kinetic energy of the body  = ?

Solution:

The kinetic energy is the energy due to the motion of a body. It is mathematically expressed as;

        K.E  = \(\frac{1}{2}\) m v²  

m is the mass of the body

v is the velocity

 Now insert the parameters and solve;

     K.E  = \(\frac{1}{2}\)  x 0.15 x 100²   = 750J

You just said that it "... travels a distance of 100 m".

Answer:

you don't cuz cheerleaders only get in the way of the football game

Volcanoes on Enceladus affect the E Ring of Saturn by Option D) supplying ring particles.

Volcanoes on Enceladus, one of Saturn's moons, affect the E Ring of Saturn primarily by supplying ring particles. Enceladus is known for its cryovolcanism, which means that instead of spewing molten rock like on Earth, these volcanoes eject water, ice, and other volatile substances. This process occurs due to the internal heat generated within Enceladus, which causes water and other materials to rise to the surface and be ejected into space.

The particles released by the cryovolcanoes become ionized and are attracted to Saturn's magnetic field, forming a plasma torus around the planet. This torus coincides with the location of the E Ring, and the ejected particles contribute to the formation and maintenance of the ring. Additionally, these particles create a diffuse and faint appearance, which is a characteristic feature of the E Ring.

In summary, the cryovolcanic activity on Enceladus plays a significant role in supplying particles to Saturn's E Ring. The ejection of water, ice, and volatile substances from Enceladus' surface contributes to the formation, maintenance, and unique appearance of the ring. Therefore, Option D is Correct.

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The displacement of a certain object is described by y left parenthesis t right parenthesis equals  5sin(4.3πt)., where t is in seconds. The frequency of the object is is 2.15 Hz.

The frequency of an oscillating object is the number of complete cycles it completes per unit of time. In this case, the displacement of the object is described by the equation y(t) = 5sin(4.3πt).

To find the frequency, we can look at the coefficient of t inside the sine function. In this case, the coefficient is 4.3π.

The general formula to calculate the frequency (f) from the angular frequency (ω) is:

f = ω / (2π)

In this case, the angular frequency (ω) is 4.3π.

Substituting the values into the formula:

f = 4.3π / (2π)

The π cancels out, leaving:

f = 4.3 / 2

f = 2.15 Hz

Therefore, the frequency of the object described by the given equation is 2.15 Hz.

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Answer:

Explanation:

An x-ray emits radiation to see through the outer part of your body.

Hope this helps! <3

An X-ray is a type of radiation which is a type of electromagnetic radiation in the electromagnetic spectrum.

The  electromagnetic spectrum consists of electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.There are 7 types of electromagnetic radiation in the electromagnetic spectrum.Gamma rays have the highest energy while radio waves have least energy.

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Longitudinal waves, also known as compression waves, are waves in which the medium is displaced either parallel to or perpendicular to the wave's path of propagation.

A straightforward technique to show a transverse wave is to move a string or slinky up and down while holding one end motionless.

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Answer:

13.7 m/s^2

Explanation:

Radius, r= 42m

Velocity, v= 24m/s

Ac= V^2/r

Ac=(24)^2/42

Ac= 13.7m/s2

The centripetal acceleration is 13.7 m/s².

Centripetal acceleration is given by,

Ac = v²/r

where,

Ac = centripetal acceleration

v = velocity

r = radius

Given,

v = 24 m/s

r = 42 m

To find,

Ac =?

Put the value in the formula,

Ac = v²/r

    = (24)²/42

    = 576/42

    = 13.7 m/s²

Hence, the centripetal acceleration is 13.7 m/s².

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It would take approximately 19.2 years for the asteroid to orbit once around the sun. But that none of the answer choices match the calculated value of approximately 19.2 years.

The period (T) of an orbit of a celestial body with semimajor axis (a) around the sun can be calculated using Kepler's third law:

T² = (4π² / GM) * a³

where G is the gravitational constant and M is the mass of the sun.

Plugging in the given value for the semimajor axis (a = 4 AU), we get:

T² = (4π² / (6.674 × 10⁻¹¹ m³/(kg s²) * 1.989 × 10³⁰ kg)) * (4 AU)³

T² = 3.652 × 10¹⁶ s²

Taking the square root of both sides, we get:

T = 6.04 × 10⁸ s

We can convert this time to years by dividing by the number of seconds in a year:

T = (6.04 × 10⁸ s) / (31,536,000 s/year)

T ≈ 19.2 years

Therefore, it would take approximately 19.2 years for the asteroid to orbit once around the sun. The closest answer choice is 16 years.

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The work done on the block by friction during the motion of the block from point A to point B is 2.49 J.

The normal force acting on the block at point A and point B is different. We can find the weight of the block at points A and point B using the following formula:

Weight = mg,

where m is the mass of the block and g is the acceleration due to gravity.

Weight at point A = m × g

Weight at point B = m × g

Now, the normal force acting on the block at point A is given as 3.95 N.

Therefore, we can write the equation for the weight and normal force as:

Weight at point A - Normal force at point A = m × a

Now, at point A, the acceleration acting on the block is the centripetal acceleration a = v²/R where v is the velocity of the block at point A.

We can write the equation for the weight and normal force as:

m × g - 3.95 = m × v²/R

Similarly, at point B, we can write the equation for the weight and normal force as:

m × g - 0.680 = m × v²/R

Now, we can solve both the equations for the velocity of the block at point A and point B:

Velocity at point A, v₁ = √(gR - 3.95/m)

Velocity at point B, v₂ = √(gR - 0.680/m)

The change in kinetic energy during the motion from point A to point B is given by:

∆KE = KE₂ - KE₁

= (1/2)mv₂² - (1/2)mv₁²

We know that work done, W = ∆KE

So, the work done on the block by friction during the motion of the block from point A to point B is given by:

W = (1/2)m(v₂² - v₁²)

Substituting the values in the above equation:

W = (1/2) × 0.0400 × ((√(9.81 × 0.500 - 0.680/0.0400))² - (√(9.81 × 0.500 - 3.95/0.0400))²)

W = 2.49 J

Therefore, the work done on the block by friction is 2.49 J.

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Answer:

Explanation:

The book is affected by the force of gravity from the Earth and the reaction of the support from the table

The velocity of the rower relative to the shore is the sum of her velocity relative to the water and the velocity of the water relative to the shore:

\(\vec v_{R/S} = \vec v_{R/W} + \vec v_{W/S}\)

Then

\(\vec v_{R/S} = \left(4.5\dfrac{\rm km}{\rm h},0\right) + \left(0,3.5\dfrac{\rm km}{\rm h}\right) = (4.5,3.5)\dfrac{\rm km}{\rm h}\)

The magnitude of this velocity is

√(4.5² + 3.5²) m/s ≈ 5.7 m/s