Is the formular of preasure P=F÷A​

Answer:

C

Explanation:

Most often you will not see immediate results with dieting and exercising.

Exercise helps to increase the rate of metabolic activities in the body. So it will helps to reduce the issues from heavy calories. Thus increasing exercise helps to balance food  intake but to get a significant change in weight, we have to waite and continue the exercises.

Anabolism and catabolism together called as metabolism. Anabolism is the synthesis of  biological compounds whereas catabolism is breaking or decomposition reaction. These biochemical reaction regulates the functions in our body.

If we uptake high calorie  food and its not burned by digestion then it will leads to weight gain and other health issues. Fat will deposits in body if the calorious foods are not digested properly.

Exercises helps to increase the rate metabolic activities in our body. It strengthens our muscles and bones and burn extra calories of food by utilise it to work  out.

Therefore, increasing exercise will help balance the larger than usual calorie intake but It takes a while to see significant results so she should keep it up and be patient. Hence, option C is correct.

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Answer:

Explanation:

The oly way we can figure this out is if the boy is pulling the sled at a constant velocity. If not, we need a value for acceleration, and you don't have that here. If the boy is pulling the sled at a constant velocity, then the value for acceleration is 0, making this a really simple problem. I'm going with that, since there is no way to answer you otherwise. If velocity is not constant, please either repost the question or put it in the notes section under the question as it stands. If acceleration is 0, then

F - f = ma becomes

F - f = m(0) which is

F - f = 0 and

F = f which says that the applied force is the same as the frictional force. We need then to find the frictional force, which has an equation of

f = μ\(F_n\) where normal force is the same as the weight of the 2 girls. We will find that, then:

Each girl's mass is different so the normal force/weight equation is

w = (30.0)(9.8) + (40.0)(9.8) to get

w = 290 + 390 and

w = 680. Plug that into the frictional force equation:

f = (.120)(680) so

f = 82N

Answer:

Conflict resolution is the process by which two or more parties reach a peaceful resolution to a dispute. In the workplace, there can be a variety of types of conflict: Conflict may occur between co-workers, or between supervisors and subordinates, or between service providers and their clients or customers.

The term conflict resolution implies the process of seeking effective and plausible settlement in conflict situations between aggrieved parties.

The term conflict in itself refers to a disagreement between two or more parties. Conflicts are common in human parlance. An example is the current conflict between Russia and Ukraine in recent times.

The term conflict resolution implies the process of seeking effective and plausible settlement in conflict situations between aggrieved parties.

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Answer:

c

Explanation:

The marginal cost curve image  has been attached from which we can clearly, indicate that

ATC = average total cost

AFC = average fixed cost

AVC = average variable cost.

From the graph we can indicate that the marginal cost curve

(c) Lies above the AVC curve when the AVC curve slopes downward.

Answer:

1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

Explanation:

Answer:

When energy contained in coal is turned into heat, and then into electrical energy. As boiling water heated by the burning coal is cooled, steam forges from these cone-shaped cooling towers.

The speed at which the motor will run on no-load can be determined by using the concept of the motor's input and output power.
Given:
Full-load power (output power) = 7.5 kW
Full-load efficiency = 86% = 0.86
Total no-load input power = 600 W
First, we can calculate the full-load input power using the efficiency formula:
Full-load input power = Full-load power / Full-load efficiency
Full-load input power = 7.5 kW / 0.86 = 8.72 kW
Now, we can determine the ratio of the no-load input power to the full-load input power:
Power ratio = Total no-load input power / Full-load input power
Power ratio = 600 W / 8.72 kW = 0.0688
Since power is directly proportional to the speed of the motor, we ca
calculate the speed on no-load using the power ratio
No-load speed = Full-load speed * √(Power ratio)
No-load speed = 1,200 r/min * √(0.0688) ≈ 292.78 r/min
Therefore, the motor will run at approximately 292.78 r/min on no-load.
1.2.2 To reduce the speed to 1,000 r/min when giving full-load torque, we need to add a resistance in the armature circuit. The speed of the motor is inversely proportional to the armature circuit resistance.
Given:
Full-load speed = 1,200 r/min
Target speed = 1,000 r/min
Using the speed ratio formula:
Speed ratio = Full-load speed / Target speed
Speed ratio = 1,200 r/min / 1,000 r/min = 1.2
Since the speed is inversely proportional to the resistance, we can calculate the resistance ratio:
Resistance ratio = 1 / Speed ratio
Resistance ratio = 1 / 1.2 ≈ 0.833
Now, we can calculate the required resistance to be added in the armature circuit:
Required resistance = Armature circuit resistance * Resistance ratio
Required resistance = 0.3 ohm * 0.833 ≈ 0.25 ohm
Therefore, a resistance of approximately 0.25 ohm needs to be added in the armature circuit to reduce the speed to 1,000 r/min when giving full-load torque, assuming the flux is proportional to the field current.

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The addition of vectors allows to find the vector that the equilibrium is

                F = (40.02 i ^ - 49.95 j ^) N

Parameters given

To find

The force is a vector magnitude so the sum of the force must be done using the methods to add vectors.

One of the easiest methods to perform the addition of vectors is the analytical method where each vector is decomposed in a Cartesian system and the components added using algebraic summation and then the resulting vector is constructed.

We decompose the vector

                 cos θ = \(\frac{A_x}{A}\)Ax / A

                 sin θ = \(\frac{A_y}{A}\)

                 Aₓ = A cos θ

                 \(A_y\)= A sin θ

                 Aₓ = 64 cos 128.7

                 \(A_y\) = 64 sin 128.7

                 Aₓ = -40.02 N

                 \(A_y\) = 49.95 N

To find the vector that allows equilibrium, we work each axis independently

X axis

                 Aₓ + Fₓ = 0

                 Fₓ = - Aₓ

                 Fₓ = 40.02 N

Y axis

                  \(A_y + F_y =0 \\F_y = - A_y\\F_y = - 49.95 N\)

We can write the resulting vector in two ways

1) F = (40.02 i ^ - 49.95 j ^) N

2) in the form of module and angle

Let's find the module with the Pythagoras' Theorem

              F =\(\sqrt{F_x} ^2 + F_y^2)\\F = \sqrt{40.02^2 + 49.95^2 }\)  

              F = 64 N

Angles

              tan θ = \(\frac{F_y}{F_x}\)

              θ = tan⁻¹  \(\frac{F_y}{F_x}\)

              θ = tan⁻¹ \(\frac{-49.95}{40.02}\)

              θ = -51.3º

This angle is measured clockwise from the positive side of the x-axis

In conclusion using the sum of vectors we can find the vector that allows the equilibrium is

                F = (40.02 i^  - 49.95 j^ ) N

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The hydrogen transition that represents the absorption of a photon in the UV portion of the electromagnetic spectrum is Option E: n=1 to n=4.

In the hydrogen atom, the energy levels of the electrons are quantized, and transitions between these energy levels result in the emission or absorption of photons. The energy of a photon is directly related to the difference in energy between the initial and final states of the electron.

In this case, the transition from n=1 to n=4 represents the absorption of a photon in the UV portion of the electromagnetic spectrum. When an electron in the hydrogen atom absorbs a photon, it gains energy and jumps from the ground state (n=1) to the higher energy state (n=4). This transition corresponds to the absorption of UV light.

The energy of the photon absorbed is equal to the difference in energy between the n=4 and n=1 levels. The energy difference increases as the electron transitions to higher energy levels, which corresponds to shorter wavelengths in the UV portion of the electromagnetic spectrum.

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The statement that differentiates an audiologist from an anthropologist is that an audiologist examines physical characteristics of humans. That is option C.

Audiologist is an individual that specializes in the diagnosis, treatment and management of hearing loss and balance disorders in adults and children.

An anthropologist is also an individual that studied the past and present experiences of individuals.

Therefore, the statement that differentiates an audiologist from an anthropologist is that an audiologist examines physical characteristics of humans.

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Answer:

the energy produced in a body due to its motion is kinetic energy.

energy produced in a body due to its position is potential energy.

Explanation:

kinetic energy is the energy possessed by a body in motion

Potential energy is the energy possessed by a body by virtue of its position with respect to a reference level

Given,

The coefficient of kinetic friction between the block and the surface = 0.30,

F = 20 N,

theta = 30 degrees,

M = 3.0 kg.

The gravitational force is,

F(g) = mg

F(g) = (3.0 kg)(9.8 m/s²)

F(g) = 29.4 N

The force acting parallel to the horizontal surface is,

F// = F sinθ

F// = (20 N) sin30°

F// = 10 N

The force of kinetic friction is,

F(k) = μkFN

FN = F(g)

[FN = 29.4 N (as the block is placed horizontally on the surface)]

F(k) = (0.30)(29.4 N)

F(k) = 8.82 N

From Newton's second law ,

F// - F(k) = ma

Substituting the values,

10 N - 8.82 N = 3.0 kg × a

1.18 N = 3.0 kg × a

a = 1.18 N/3.0 kg

a = 0.393 m/s²

Therefore, the magnitude of the acceleration of the block is 0.393 m/s².

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The resultant in magnitude was found to be 110 N and the direction was found to be north west.

what are the types of forces ?

Spring Tension

This force acts in the opposite direction of molecular displacement. As in a spring or an elastic rubber band, for example.

Force Applied

The force exerted by our muscles is known as applied force. It is also known as muscular force. For instance, moving a box or kicking a ball.

Air Defense Force

The force exerted by a gas acting in the opposite direction on a body is known as air resistance force. Examples are the forces encountered by a skydiver or a downhill skier, among others.

Normal Strength

It is the force that acts when two surfaces come into contact. This force is perpendicular to the surface and acts in the outward direction. For instance, a box on top of a table.

Tension Force

A rope or thread holding an item experiences this form of force. The tension force is always a pull, never a push. The tensile force is constant throughout the cable. Consider a ball suspended from a string.

Frictional Force

Frictional force is generated when items on a surface attempt to move relative to the surface. For example, when a package is slid over a table.

Electromagnetic Force

These are the electromagnetic and electric interactions between atoms and molecules that aid in the bonding and definition of solid structures. Poles, for example, attract each other in a magnet.

Gravitational Force

The gravitational force can be defined as the force is acting among objects owing to the existence of matter.

therefore the resultant magnitude and the direction was 110N and the direction was north west.

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The question is incomplete as it does not have the options which are:

deciduous forest

taiga (boreal forest)

temperate rainforest

tropical rainforest

Answer:

Taiga (boreal forest)

Explanation:

A Biome refers to the habitat which is occupied by flora and fauna living in similar conditions.  These biomes are distinguished based on many features like precipitation, temperature and many other physical factors.

In the given question, the biome which receives an annual rainfall of 35 to 100 cm annually and is mostly covered by the coniferous trees is known as "Taiga biome" which is also known as Boreal forest.

The Taiga biome is one of the largest terrestrial biomes which is present in Eurasia and North America. The biome is characterised by the conifers trees and therefore is also known as the Coniferous trees.

Thus, Taiga (boreal forest) is the correct answer.

Answer: Taiga(boreal forest)

Explanation:

Answer:

\( \boxed{\sf Potential \ energy \ (PE) = 7.35 \ kJ} \)

Given:

Mass (m) = 75 kg

Height (h) = 10 m

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

To Find:

Potential Energy (PE)

Explanation:

The formula for potential energy due to gravity:

\( \boxed{ \bold{PE = mgh}}\)

Substituting value of m, g & h in the formula:

\( \sf \implies PE = 75 \times 10 \times 9.8 \\ \\ \sf \implies PE = 7350 \: J \\ \\ \sf \implies PE = 7.35 \: kJ\)

Neutral pion traveling along the x axis decays into two photons, one being ejected exactly forward, the other exactly backward! The first photon has three times the energy of the second ,the original pion had a speed of 0.5c

To solve this problem, we can use conservation laws, specifically the conservation of energy and momentum.

Let's denote the mass of the neutral pion as m_pion and the speed of the neutral pion as v_pion. Since the pion decays into two photons, we can denote the energy of the first photon as E1 and the energy of the second photon as E2.

Conservation of Energy:

The total energy before and after the decay should be conserved. The energy of the neutral pion can be calculated using the relativistic energy equation:

E_pion = γm_pionc^2

where γ is the Lorentz factor given by γ = 1/sqrt(1 - v_pion^2/c^2) and c is the speed of light.

The energy of the first photon is three times the energy of the second photon:

E1 = 3*E2

After the decay, the total energy is the sum of the energies of the two photons:

E_total = E1 + E2

By conservation of energy, we can equate the initial and final energies:

E_pion = E_total

Substituting the expressions for E_pion and E_total, we have:

γm_pionc^2 = E1 + E2

Conservation of Momentum:

The momentum of the system should also be conserved. Since the first photon is ejected exactly forward and the second photon is ejected exactly backward, their momenta are equal in magnitude but opposite in direction. The momentum of a photon can be calculated using the equation:

p = E/c

By conservation of momentum, we have:

p1 + p2 = 0

Substituting the expressions for the momenta, we have:

(E1/c) + (-E2/c) = 0

Simplifying, we have:

E1 = E2

Combining the equation from conservation of energy (E1 = 3*E2) and the equation from conservation of momentum (E1 = E2), we can solve for the energies:

E1 = 3*E2

E1 = E2

Therefore, E1 = E2 = E.

Substituting this into the equation from conservation of energy, we have:

γm_pionc^2 = 2E

Substituting E = E1 = E2 into this equation, we have:

γm_pionc^2 = 2E

Since γ = 1/sqrt(1 - v_pion^2/c^2), we can solve for v_pion:

1/sqrt(1 - v_pion^2/c^2) * m_pion*c^2 = 2E

Simplifying, we have:

1/sqrt(1 - v_pion^2/c^2) = 2E / (m_pion*c^2)

Squaring both sides, we have:

1/(1 - v_pion^2/c^2) = 4E^2 / (m_pion^2*c^4)

Multiplying both sides by (1 - v_pion^2/c^2), we have:

1 = 4E^2 / (m_pion^2c^4) - 4E^2v_pion^2 / (m_pion^2c^4)

Rearranging the terms, we have:

4E^2v_pion^2 / (m_pion^2c^4) = 4E^2 / (m_pion^2c^4) - 1

Simplifying further, we have:

v_pion^2 = (4E^2 / (m_pion^2*c^4) - 1) * c^2

v_pion^2 = 4E^2 / (m_pion^2*c^4) * c^2 - c^2

v_pion^2 = 4E^2 / (m_pion^2*c^2) - c^2

v_pion^2 = 4E^2 / (m_pion^2) - c^2

Since the pion is a neutral particle, its rest mass is equal to its total energy (E = m_pion*c^2). Substituting this into the equation, we have:

v_pion^2 = 4E^2 / (E^2) - c^2

v_pion^2 = 4 - c^2

Taking the square root of both sides, we have:

v_pion = sqrt(4 - c^2)

Since we're looking for the speed, we take the magnitude:

|v_pion| = |sqrt(4 - c^2)|

Since the pion speed cannot exceed the speed of light (|v_pion| < c), we have:

|v_pion| = 0.5c

Therefore, the original pion had a speed of 0.5c.

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The planetary body with the fastest orbit is Mercury, and the one with the slowest orbit is Neptune.

There is a general pattern between orbital velocity and orbital radius known as Kepler's second law of planetary motion. According to this law, a planet sweeps out equal areas in equal times as it orbits the Sun. This implies that planets closer to the Sun have smaller orbital radii and must travel faster to cover the same area in the same amount of time.

The relationship between orbital velocity and orbital radius can be expressed as v ∝ 1/r, where v represents the orbital velocity and r denotes the orbital radius. This relationship shows that as the orbital radius increases, the orbital velocity decreases. In other words, planets farther from the Sun have slower orbital velocities compared to those closer to the Sun.

This pattern is consistent with observations in our solar system. The inner planets, such as Mercury, have smaller orbital radii and faster orbital velocities, while the outer planets, like Neptune, have larger orbital radii and slower orbital velocities.

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Really massive stars  with solar  masses of more than  1.4 solar masses, use their hydrogen fuel rapidly but are not enough to fuse  heavier elements, so  once  there are out of fuel, the star collapses and the outer layers explode into a supernova.

A white dwarf is a star just like the Sun becomes after they have exhausted its atomic fuel. As it were the hot center of the star remains, also called the core this center gets to be a really hot white dwarf, A white dwarf star is in adjust between gravity and decadence pressure, but on the off chance that the mass is as well large, more than 1.4 solar masses, the degeneracy weight isn't satisfactory to hold up the star, and the star collapses. If the mass of the stellar remnant surpasses 1.4 solar masses at that point the electron degenerate pressure is insufficient to resist the force of gravity and it will  proceed to break down and form either a neutron star or a dark hole.

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The magnitude of the magnetic field inside the solenoid is approximately 0.115 T (Tesla).

To determine the magnitude of magnetic field inside the solenoid, we can use the formula for the magnetic field inside a solenoid:

B = μ₀ * n * I,

where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), n is the number of turns per unit length (turns/m), and I is the current.

First, we need to calculate the number of turns per unit length. The solenoid consists of 2200 turns of wire and has a length of 1.50 m. Thus, the number of turns per unit length is:

n = N / L,

n = 2200 / 1.50,

n ≈ 1466.67 turns/m.

Now we can substitute the values into the formula:

B = μ₀ * n * I,

B = (4π × 10⁻⁷ T·m/A) * (1466.67 turns/m) * (0.180 A),

B ≈ 0.115 T.

Therefore, the magnitude of the magnetic field inside the solenoid is approximately 0.115 T (Tesla).

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The maximum possible yield strength in MPa for a single crystal of the metal that is pulled in tension is 35.355 MPa.  The maximum possible yield strength in MPa for a single crystal of the metal that is pulled in tension can be determined by : Maximum possible yield strength = critical resolved shear stress x √2.

The maximum possible yield strength of a single crystal of the metal that is pulled in tension can be calculated using the formula. Maximum possible yield strength = critical resolved shear stress x √2Where, Critical resolved shear stress = 25 MPa.

Substituting the given value of the critical resolved shear stress in the above equation we get: Maximum possible yield strength = 25 x √2= 25 x 1.414= 35.355 MPa.

Therefore, the maximum possible yield strength in MPa for a single crystal of the metal that is pulled in tension is 35.355 MPa.

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The maximum possible yield strength (in MPa) for a single crystal of this metal that is pulled in tension is 14.4 MPa.

The critical resolved shear stress for a metal is 25 MPa. We need to determine the maximum possible yield strength (in MPa) for a single crystal of this metal that is pulled in tension.

In order to determine the maximum possible yield strength (in MPa) for a single crystal of this metal that is pulled in tension, we use the formula:

\($$Maximum possible yield strength = Critical resolved shear stress \times \sqrt{\frac{2}{3}}\\Maximum possible yield strength = 25 MPa \times \sqrt{\frac{2}{3}} = 14.4 MPa\)

Therefore, the maximum possible yield strength (in MPa) for a single crystal of this metal that is pulled in tension is 14.4 MPa.

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Answer:  (You can cut out whatever part you don't need.)

X-rays are a form of electromagnetic radiation. X-rays have high energy and can pass through most objects, including the body. Medical x-rays are used to generate images of tissues and structures inside the body.     However, getting repeatedly exposed to x-ray radiation may damage cells in the body, and the risk of cancer increases the more you're exposed to that radiation. This is why you should use the x-ray in limited amounts

Answer:

Explanation:

The direction of the applied force has to be parallel to the distance an object moved in order to say that work has been done.

We have:

vi = initial speed = 4 m/s

vf = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Apply:

Replace with the values given:

Answer: 4.2 m/s^2

The Acceleration of the car is 4.2 m/s.

We will use the formula of acceleration.

a = vu - vi / t

Given:

vi = initial speed = 4 m/s

vu = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Now, we will put the given values in the formula,

a = vu - vi / t

a = 25 - 4 / 5

a = 21 / 5

a = 4.2 m/s

Therefore, the Acceleration of the car is 4.2 m/s.

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Explanation:

The true statement about the Big Bang is option b) It began with all matter and energy concentrated in an infinitesimally small point.

The Big Bang theory is the prevailing cosmological model that describes the origin and evolution of the universe. According to this theory, the universe began as a singularity—an extremely hot and dense point—approximately 13.8 billion years ago. The expansion of the universe started from this initial state, known as the Big Bang.

Option a) "It occurred less than 13 million years ago" is incorrect. The Big Bang is estimated to have occurred around 13.8 billion years ago, not million years ago.

Option c) "The Big Bang theory states that at the instant of explosion, atoms of all major elements came into existence" is incorrect. The Big Bang itself did not directly create atoms of all major elements. The formation of atoms occurred later during the cosmic evolution through processes like nucleosynthesis.

Option d) "It is the explanation for how our solar system developed" is incorrect. The Big Bang theory explains the origin and expansion of the entire universe, not the formation of individual solar systems like ours. The formation of our solar system is attributed to a different process known as stellar evolution and the gravitational collapse of a molecular cloud.

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Answer:

B.

Explanation:

as there is a '-' sign before the magnification value, it forms a real image.

so the last two options get cancelled.

as the value of magnification is 0.87 ie. lesser than 1, we can say that the image is smaller.

The type of image is formed by a lens if m = -0.87 would be smaller than the object and the object is real

A lens is a transmissive optical tool that employs refraction to focus or disperse a light beam. The power of the lens is expressed in the dioptre which is the reciprocal of the focal length of the lens.

The image formation through the lens is calculated with the help of the lens formula given as follows

1/f = 1/v - 1/u

where f is the focal length of the lens

u is the distance of the object from the lens

v is the distance of the image formed from the

magnification (m) = size of image /size of the object

As given in the problem image is formed by a lens if m = -0.87

Thus, the negative sign represents that the image formed by the object is real, and the magnitude of the magnification is less than 1 this represents that size of the image is smaller than the size of the object.

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The static friction coefficient is higher than the kinetic friction coefficient.

What is static friction?

Friction is the obstruction or resistance that prevents one solid object from rolling or sliding over another. F indicates this. Any solid and liquid layer motion is opposed by a force. When two materials slide over one another, this force is created. There is friction all around us. For instance, when we walk, the ground is in contact with our feet. When we walk, one foot advances while the other moves backward, applying pressure to the ground. When this force is applied to the ground, the ground applies an equal and opposing force to our feet. One of the laws of motion is being followed in this situation.

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