Explain briefly how Karl Popper applies his concept "Verisimilitude to describe the *Progress of science'. (ii) Explain briefly the views of Karl Popper regarding ‘Ad-hoc modification of theories. (iii) How does Popper apply his above-mentioned views regarding the ad-hoc modifications of theories to show that Karl Marx's theory on the evolution of societies is pseudo- science? (iv) What is the main draw-back of Popper’s method of falsification?

The formula for calculating the coefficient of friction is given by:

μ = F / N.

The coefficient of friction formula is a mathematical equation used to calculate the amount of frictional force that exists between two surfaces in contact with each other.

The coefficient of friction is a dimensionless quantity that represents the ratio of the frictional force between two surfaces to the normal force pressing them together.

The formula for calculating the coefficient of friction is given by:

μ = F / N

where μ is the coefficient of friction, F is the frictional force acting between the two surfaces, and N is the normal force pressing the surfaces together.

The coefficient of friction can have values ranging from 0 to 1. A value of 0 indicates no friction between the surfaces, while a value of 1 indicates maximum friction. The coefficient of friction is an important parameter in many engineering and physics applications, such as in designing brakes for vehicles and calculating the force required to move objects over different surfaces.

Learn more about coefficient of friction:

brainly.com/question/13754413

#SPJ4

Answer:

391.67Hz

Explanation:

The fundamental frequency formula in string is expressed as;

Fo = V/2L

V is the velocity of the wave = 329m/s

L is the length of the string = 42cm = 0.42m

Substitute

Fo = 329/2(0.42)

Fo = 329/0.84

Fo = 391.67Hertz

Hence the  fundamental frequency of a mandolin string is 391.67Hz

Hello jamaicandoll!

\( \huge \boxed{\mathfrak{Question} \downarrow}\)

What is the force on a body if the mass of the body is 2300g? (acceleration due to gravity = - 9.8m/s²) .

\( \huge \boxed{\mathfrak{Answer} \downarrow}\)

Given,

We know that, force = mass × acceleration.

So,

F = ma

F = 2.3 × -9.8

F = \(\boxed{\underline{\bf \: -22.54\:N}}\)

__________________

Hope it'll help you!

ℓu¢αzz ッ

The impedance of a series lrc circuit with a resistance of 18 ohms,The impedance is 27.88Ω.

Calculation:-

The impedance is given by,

\(Z = \sqrt{R^{2}+(wL -\frac{1}{wC})^{2} }\)

The angular frequency can be written as,

W= 27\(\pi\)  w = 2\(\pi\) (120) = 753.98rad/s

We can calculate the impedance as,

=  Z = √(18)² + ((753.98)(0.03) - 1/(753.98)(1 x 10⁻³)² = 27.88Ω.

Impedance is the overall resistance of a circuit to current or a measure of how well it impedes the flow of charge. This is similar to resistance but also takes into account capacitance and inductance. An ohm is a unit of measurement for impedance. Impedance and resistance are similar concepts.

Both describe how a component resists or resists the flow of current. Resistance is the measurement of voltage divided by the resistance of the resistor. Impedance is a generalized concept of voltage divided by current in each component.

Learn more about The Impedance here:- https://brainly.com/question/13134405

#SPJ4

Answer:

I think it is D or A

Explanation:

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

Answer:

Explanation:

I think it's wrong but I tried my best..

E = P t = I a t yields the sound energy impinging just on microphone per second.

False. A microphone normally has very little probability of being damaged by loud noise. SPLs over 150dB can be handled using a dynamic microphone. Without placing a microphone inside a jet engine's exhaust, that volume cannot be created.

As sound waves travel through the ear canal, THE EAR DRUMS VIBRATE. Three connected bones in the eardrum allow vibrations to pass through. This motion STARTS THE MOVEMENT OF THE INTERNAL EAR FLUID. As a result of the fluid moving, numerous microscopic hair-like cells flex and convert vibrations into nerve impulses.

To know more about sound visit:

https://brainly.com/question/29707602

#SPJ4

Answer:

7 m/s East

Explanation:

The speed of the man relative to the plane is given as 7 m/s. Given that he's walking in the corridor of the plane, this is his speed relative to the plane. Since he's moving to the back of the plane, and the aircraft is headed to west, the man's direction relative to the plane is East.

Given

The Sun is d=150 million kilometers away from Earth.

Light travels at v=3 × 10^5 m/s.

To find

How long does it take for light to reach Earth from the Sun?

Explanation

We know

Time taken is given by

Conclusion

The time taken is D.500 sec

From Einstein’s theorem

Relativistic momentum,

\(p=mv/\sqrt{1-v^{2}/c^{2} }\)

If velocity is doubled

\(p=m2v/\sqrt{1-2v^{2}/c^{2} }\)

Therefore, if the velocity doubles, the relativistic mass will likewise double, resulting in a linear momentum that is greater than twice as great.

what is relativistic momentum?

The law of conservation of momentum holds true for relativistic momentum in any situation where there is no net external force. Relativistic momentum p is classical momentum multiplied by the relativistic factor δ

p=δ/mu, where m is the rest mass of the object, u is its velocity relative to an observer, and the relativistic factor \(\boldsymbol{\gamma = \frac{1}{\sqrt{1 - \frac{u^2}{c^2}}}} .\)

Relativistic momentum is the same as classical momentum at slow speeds.

Relativistic momentum approaches infinity as u approached c. This suggests that a mass-containing item cannot travel at the speed of light.

Like classical momentum, relativistic momentum also exhibits conservation

To know more about momentum:

https://brainly.com/question/9974843

#SPJ4

Answer:

Explanation:

Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperatures and pressures than schist. However, unlike slate and schist, gneiss does not preferentially break along planes of foliation because less than 50% of the minerals formed during the metamorphism are aligned in thin layers.

The graph has a force on the y-axis and displacement on the x-axis. Given that the disk is able to move on a straight, level track with negligible friction.  the speed of the disk when the displacement is 2 m is most nearly 2 m/s.

With the disk initially at rest, a horizontal force is applied to the disk. The force is measured as a function of the disk’s displacement. Let the speed of the disk when the displacement is 2m be v.When the net force on an object is given as a function of position, it is usually easier to find the work done than to use Newton's second law directly, as the law involves finding acceleration, and it is often difficult to determine the acceleration as a function of position.Let's integrate the force to find the work done.

Therefore, the work done by the net force as the disk moves from x1 to x2 is given by:

W = ∫F(x)dx (from x1 to x2)

The work-energy theorem states that the work done by all the forces acting on a particle equals the change in the particle's kinetic energy (the energy it has due to its motion)The change in kinetic energy of the particle is equal to the work done on the particle:

W = ΔKBy the work-energy theorem, W = ΔK = 1/2 mv² - 1/2 m (0)²= 1/2 mv²

When the displacement is 2.0 m, the work done, W is equal to the area under the curve between x = 0 and x = 2.0 m.Therefore, work done = area under the

curve = 0.5 (2 m) (4 N) = 4 J

From the work done above we can calculate the speed of the disk when the displacement is

2 m (v):W = ΔK1/2 mv² = Wv² = 2W/mv = √(2W/m)

When the disk’s displacement is 2.0 m, the speed of the disk, v is:

v = √(2W/m)Substituting W = 4J and m = 2.0kg we obtain:v = √(2 × 4J/2.0kg) = √4 = 2 m/s

For more question disk

https://brainly.com/question/17056140

#SPJ8

Answer:

True

Explanation:

an object in motion stays in motion unless acted upon by another force

Answer/Explanation:

True. A force is what causes a movement in the first place. In order for an object to change motion a different force must be applied such as its opposing force.

Natural force: Thrust

Opposing force is drag.

Other forces are gravity and lift.

The opposing force will reverse the motions direction, the other forces will just change the direction without reversing.

Answer:

One of the most useful use of expansion by heat is for switches on many types of machinery and home appliances Thermostats in the millions of cars are operated by using the expansion of metal Thermometers are another example,

The disadvantages are just as common Railway lines need free movement d will buckle without sufficient clearance. Internal combustion engines need to be designed to allow for expansion and contraction of metal parts

Answer:

we need to see all of the options

Explanation:

A locomotive with a mass of 2e5 kg travels at 50 m/s along a straight horizontal track with a 43N force. The lateral force exerted on the rails can be calculated. The magnitudes of the upward reaction forces exerted by the rails will be compared for two cases: when the locomotive is accelerating and when it is moving at a constant speed.

To calculate the lateral force exerted on the rails, we use Newton's second law: force = mass * acceleration. The lateral force can be obtained by subtracting the product of the locomotive's mass and its acceleration from the given horizontal force. For the second part, when the locomotive is accelerating, the upward reaction force exerted by the rails will be greater due to the additional force required for acceleration. When the locomotive is moving at a constant speed, the magnitudes of the upward reaction force and the force of gravity will be equal, resulting in a balanced situation.

to learn more about horizontal force. click here; brainly.com/question/32465594

#SPJ11

Answer: Total distance = 4π meters and the Total Displacement = 0

Explanation: 1.5 rounds around the pole = 1.5 times the circumference of the circle form by the rope.

Circumference of a Circle = 2πr

from the question the radius = 2m, hence the total circumference = 2π*2 = 4π meters.

Displacement which is distance between initial position and final position. When the horse takes one and a half rounds around the pole, it ends up back at the starting point. Hence, the displacement is zero.

Answer:

c gl

Explanation:

::::::::::::::::::::::::

From the calculation, the speed of sound at 10 K is 63.5 m/s.

We know that the speed of sound is directly proportional to the temperature of the body thus we can write;

V1/V2 = √T1/T2

Then;

T1 = 0 degrees or 273 K

T2 = 10 K

V1 = 330 m/s

V2 = ?

330/T2 = √273/10

330/T2 = 5.2

330 = 5.2T2

V2 = 330/5.2

V2 = 63.5 m/s

Learn more about speed of sound:https://brainly.com/question/15381147

#SPJ1

Answer:

Push - The most common form of force is a push through physical contact (like a lawnmower or shopping cart)

Pull - You can apply a force by directly pulling on an object (like pulling a wagon)

Explanation:

-- you sit on a chair

-- gravity pulls something down

-- water pushes a log up to float

-- air holds the skin of a balloon out, in a ball-shape

-- my dog bites a bone

-- air holds the tires of my car out, in donut shapes

-- a book presses on a table

-- my shoes press down on the floor

-- my feet press down on the bathroom scale

-- the bathroom scale presses up on my feet

-- gravity pulls the Earth up toward me

Answer: mechanical energy to power the train.

Explanation:

The air needs to rise by 800 meters to cool down to its dew point temperature of 10°C, at which point it will become fully saturated with water vapor.

If air starts out with a temperature of 18°C and a dew point of 10°C, it means that the air is not fully saturated with water vapor. In order for the air to become saturated, it needs to cool down further until it reaches its dew point temperature. The difference between the temperature and dew point is known as the dew point depression.

To calculate the ascent necessary for the air to become saturated, we need to use the concept of adiabatic cooling. Adiabatic cooling refers to the cooling of air as it rises and expands due to a decrease in atmospheric pressure. The rate at which air cools with altitude is known as the adiabatic lapse rate.

The adiabatic lapse rate for unsaturated air is approximately 10°C per 1000 meters of ascent. Therefore, if the air temperature is 18°C and the dew point is 10°C, the ascent necessary for the air to become saturated is around 800 meters. This means that the air needs to rise by 800 meters to cool down to its dew point temperature of 10°C, at which point it will become fully saturated with water vapor.

Learn more about dew point here:

https://brainly.com/question/30764349

#SPJ11

Answer: The answer is B

Explanation: Sound waves travel faster in water than in air, when it hits steel it's going to increase due to its high elastic properties.

The mass of the object is 3.6 kg.

The given diagram has to be transformed to represent the three sides of a triangle. A sketch is attached to this answer.

So that applying the Sine rule, we have;

T1/Sin T1 = T2/Sin T2

34/Sin  T1 = 24/Sin 40

Sin T1 = (34*Sin 40)/ 24

          = 65.6

T1 = \(66^{o}\)

So that to determine the value of M, sum of angles in a triangle is 180.

T1 + T2 + M = 180

66 + 40 + M = 180

M = 180 - 106

M = \(74^{o}\)

Then,

m/Sin M = T2/Sin T2

m/Sin 74 = 24/Sin 40

m = (24*Sin 74)/ Sin 40

   = 35.891

m = 36 N

Divide by g = 10 m/s^2

m = 36/ 10

   = 3.6

m = 3.6 kg

The mass of the object is 3.6 kg.

Learn more about equilibrants at https://brainly.com/question/26171379

#SPJ1

Answer:

a

Explanation:

The density of the SF₆ gas at the given pressure and temperature is 2.96 g/l.

The given parameters:

The molecular mass of the SF₆ gas is calculated as follows;

M of SF₆ = 32 + (6 x 19) = 146 g/mol

The density of the SF₆ gas is calculated by applying ideal gas law as follows;

\(PV = nRT\\\\PV = \frac{m}{M} RT\\\\PM = \frac{m}{V} RT\\\\PM = \rho RT\\\\\rho = \frac{PM}{RT}\)

where;

\(\rho = \frac{0.5 \times 146}{0.0821 \times 300} \\\\\rho = 2.96 \ g/l\)

Thus, the density of the SF₆ gas at the given pressure and temperature is 2.96 g/l.

Learn more here:https://brainly.com/question/21912477

The answer is True. The conservation of charge, or Kirchhoff's current law, stipulates that the total current entering and leaving a junction in an electrical circuit must equal each other.

Kirchhoff's current law asserts that the algebraic sum of currents at any junction point (or node) in an electrical circuit is always zero, often known as the junction rule or the first law. This law is founded on the idea that charge cannot be created or destroyed, which is known as the conservation of charge. Any current that enters a junction must therefore be balanced by an equivalent current that exits the junction. By using current relationships at various nodes, this law serves as the basis for understanding and resolving complex electrical circuits. It is a cornerstone of circuit analysis and is frequently applied in physics and electrical engineering.

The algebraic sum of currents entering every junction point (or node) in an electrical circuit must match the algebraic sum of currents exiting that junction, according to Kirchhoff's current law, sometimes referred to as the junction rule or Kirchhoff's first law. Alternatively said, the total current entering a node equals the total current leaving it. This law is based on the concept of conservation of charge, which holds that electric charge can only be moved from one place to another and cannot be created or destroyed. The entire amount of charge entering a junction must match the total amount of charge exiting that junction since electrons carry charge through a circuit.

To know  more about Kirchhoff's current law,

https://brainly.com/question/30394835

#SPJ4