How do you calculate this?

A total of 151988 sheets of paper are required to be put on the individual so that it create a pressure of 1 atm.

We know that the pressure is given by the force applied on the area divided by the magnitude of the area.

Here, it is given that dimensions of the paper is 8.5 inch X 11 inch.

So the area of the paper is 93.5 in².

Converting inch square into metre square,

Area = 0.06m².

The mass of 1 sheet of paper is 0.004 kg.

So the force applied by the sheet of paper on the person will be equal to,

F = 0.004 × 10

F = 0.04 N.

Let us say that n number of sheets are required.

The pressure that is needed to be created is 101325 pascals.

Now,

Pressure = force/area

Putting the values,

101325 = N(0.04)/0.06

N = 151988.

So, total of 151988 sheets are required.

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Answer: 20

Explanation: Because if you divide the astronauts weight by 10.

The moment of inertia of the boxer's forearm that has an angular acceleration of 125.0 rad / s² is 0.25 kg m²

τ = F * ⊥d

τ = Torque

F = Force

⊥d = Perpendicular distance

F = 1495 N

⊥d = 2.1 cm = 0.021 m

τ = 1495 * 0.021

τ = 31.395 N m

τ = I α

I = Moment of inertia

α = Angular acceleration

α = 125 rad / s²

I = τ / α

I = 31.395 / 125

I = 0.25 kg m²

Therefore, the moment of inertia of the boxer's forearm is 0.25 kg m²

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Frictional forces between wind and the ocean surface are the primary cause of surface waves. This is the first option.

The most common cause of waves is wind. Surface waves, also known as wind-driven waves, are formed by the frictional forces between wind and surface water. The continual disturbance creates a wave crest as wind blows across the surface of the ocean or a lake. Surface waves are found globally across the open ocean and along the coast.

There is also a type of waves called tidal waves. Tidal waves are caused by the gravitational pull of the Sun and Moon on Earth.

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This planet is less massive than the Earth, as we can deduce.

What is meant by the orbital period?

A measure of how long it takes for one complete orbit of a celestial body to complete In terms of time, "the orbit period depends on the satellite altitude." the length of time needed for one cycle of a phenomenon that repeats itself frequently.

What are rotation and revolution?

An object rotating around its axis is referred to as turning. An object's orbital movement around another thing is called a "revolution." A 24-hour day, for instance, is created when the Earth rotates on its axis. The 365-day year results from the Earth's rotation around the sun.

Therefore, it is lesser massive than Earth.

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The vertical height the basketball player will attain in the given time is 2.2 m

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

The vertical height attained by the player, can be obtained as illustrated below:

h = ½gt²

h = ½ × 9.8 × 0.671²

h = ½ × 9.8 × 0.450241

h = 2.2 m

Thus, from the calculation made above, we can conclude that the vertical height of the player is 2.2 m

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Beating a magnet on an object is not a method of making magnets. The correct option to this question is B.

Paper-clip  Note Magnet

Making a magnet out of a paper clip is the simplest method.

Collect goods: A small piece of metal can be used to create a quick temporary magnet, like a paper clip or a refrigerator magnet.

The induction approach entails merely bringing the magnetic material (soft iron) close to a powerful magnet without making contact.

Magnet using the electro magnetic approach in an image

Utilizing transmitters, electromagnetic (EM) techniques produce powerful, time-varying main magnetic fields that cause electrical currents to flow through conductive rocks.

Instead of moving it back and forth in the same direction, rub the paperclip magnet against the object. To fire a game, make the same swift action.

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Answer:

The change in momentum of the ball = 81 kg·m/s

Explanation:

Given:

m = 1.5 kg

V₁ = - 27 m/s

V₂ = + 27 m/s

____________

Δp - ?

The change in momentum of the ball:

Δp = m·ΔV

Δp = m· (V₂ - V₁) = 1.5·(27 - (-27)) = 1.5·(27 + 27) = 81 kg·m/s

Answer:

Explanation:

Given:

V₀ = 1 000 km/h = 1  000 000 m / 3 600 s ≈ 280 m/s

V = 0 m/s - the Blue Flame car stopped

D = 2.0 km = 2 000 m  - distance

________________________________

a - ?

D = (V₀² - V²) / (2·a)

Acceleration:

a = (V₀² - V²) / (2·D)

a = (280² - 0²) / (2·2000) ≈ 20 m/s²

The ball will continue to advance at a speed of 2.0 m/s once it rolls off the edge of the table until it lands on the ground after 0.45 seconds.

The ball is behaving just like it has been dropped. Nature is unconcerned by the fact that it is also advancing.

D=1/2gt2 and T=√2d/g

By entering the table's height and the gravitational acceleration, we can calculate the time in seconds:

t= √2(1.5m)/9.8m⋅s−2 = 0.553s

So, for a little bit longer than a half-second, the ball will be in the air (and thus able to move ahead). To find the distance travelled, we simply reverse the speed equation, s=dt, and insert in the speed and time:

d= 20m/s(0.553s)= 1.11m

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The celerity of a wave train (group of swell) in the open ocean is 14 meter per second.

oceanography :

average wavelength of open ocean, l = 140 meters

time period, t = 10 seconds

speed of the train is calculated as :

140/10 = 14m/s

speed of train = 14m/s

The celerity of a wave train (group of swell) in the open ocean is 14 meter per second.

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1. The x component of the force is 4.4 N

2. The y component of the force is 3.5 N

The following data were obtained from the question:

1. How to determine the x component

x component = FCosθ

x component = 5.6 × Cos 39

x component = 4.4 N

2. How to determine the y component

y component = FSineθ

y component = 5.6 × Sine 39

y component = 3.5 N

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The velocity of the wind that is affecting the plane relative to the observer is 5.5 m/s north.

Option A is the correct answer.

The velocity of the wind relative to the observer is the velocity of the wind measured from the observer as a frame of reference.

The relative velocity of the plane from the observer as the frame of reference is calculated as follows;

Vr² = Vp² + Vw²

where;

The given parameters;

Vr² = Vp² + Vw²

Vr = √(Vp² + Vw²)

Vr = √(45.8² + 40.3²)

Vr = 61 m/s

The velocity of the wind that is affecting the plane relative to the observer is calculated as follows;

Vo = 45.8 m/s north - 40.3 m/s south = 5.5 m/s north

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5:6 is the ratio of linear speed of two runners in jogging. The rate at which an object's position changes in relation to a frame of reference is known as its velocity, and it depends on time.

The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity.

The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time. The displacement of the item in one unit of time is the definition of velocity.

The speed of the person one at the radium is v1=15

The speed of the person two at the radium is v2=18

The ratio be 15:18  , The 15 and 18 are the common multiple of 3

Therefore 5:6

The rate at which an object's position changes in relation to a frame of reference is known as its velocity, and it depends on time. A specification of a thing's speed and direction of motion is what velocity is.

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The ball will take 45 seconds to reach the ground.

U=0(since ball is dropping)

So, we have to find t=?

Given

a=-9.8m/s

S=45m

As we know,

S=ut+1/2at^2

so,

t^2=45×90/2

hence

t=45s.

so the time taken is 45 seconds.

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The distance to the ink mark appear to be in 3.58cm.

The refractive index, also known as the index of refraction, is a numerical value that is determined by comparing the difference between the speed of light in a vacuum and that of light in a material with a higher density. The refractive index variable is most usually represented by the letter n or n' in mathematical computations and descriptive language.

The measurement of how much a light ray bends when moving from one medium to another is called the refractive index. It is also known as n = c/v, which is the ratio of the speed of a light beam in a substance to that of a light ray in a vacuum.

The perceived depth of the link noted = real depth/µ

The perceived depth of the link noted  = 3/1.67

The perceived depth of the link noted = 1.79cm

So, the person sees the mark from a distance = 1.79+1.79 = 3.58cm

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The oil slick measures 325 nm thick, at the very least. There are a few methods for measuring slicks between 0.1 and 10 m (0.0001-0.001 mm), but these aren't helpful for oil spill cleanup.

An oil spill is the inadvertent release of a liquid petroleum hydrocarbon to the environment as just a consequence of human activity (also known as an oil slick). This is the typical definition of an oil slick; alternative definitions are covered in the article.

A combination of dark blue, green, or purple tones are applied to darker hair in this style, which is also known as oil spill hair because it gives the hair a shimmering appearance. It resembles the pastel hair style, but instead of using ultra-pale colors, deeper colours are blended to create the iridescent look..

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Projectile motion is a combination of constant motion in the horizontal direction, and accelerated motion in the vertical direction. Therefore, the correct answer option is: D. constant, accelerated.

Projectile motion can be defined as a form of motion which is experienced by a physical object (body) that is projected near the surface of planet Earth, while moving along a parabolic (u-shaped curve) path, and under the influence of a gravitational force only.

Based on scientific research and records by scientists such as Galileo, we can infer and logically deduce that the initial horizontal velocity of a physical object undergoing a projectile motion is always equal to its final horizontal velocity.

Additionally, Galileo stated that projectile motion combines constant or uniform motion in the horizontal direction and accelerated motion in the vertical direction.

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The difference between the Bohr model and the Schrödinger model is that the model electron orbitals as regions of space. Option C.

In the Bohr model, we can see that the electrons were arranged in energy levels. The energy levels are such that an electron can be promoted from a lower to a higher energy level. Each of the energy levels has a given amount of energy.

However, in the case of the Schrödinger model, we do not present the electron as resident at a particular point in space but we postulate that there is a region in space where the electron could be found.

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The potential energy provided to the car is 19600 joules, or around 20,000 j, when a 1000-kg car is raised two meter's off the ground using a hydraulic lift at an auto repair shop.

The energy that an item retains due to its position in hydraulic lift to other objects, hydraulic lift tensions, electric charge, or other Gravitational potential reasons is known as potential energy in physics. produces gravitational potential energy

GPE=mgh

where;

m equals the object's mass

g stands for the object's gravitational acceleration.

The height has increased by h in metres.

 As The result is:

GPE = 1000kg*9.8m/s*2m

=19600kg m2/s2

=19600J

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The law that explains it is called the law of conservation of energy.

The law of conservation of energy states that in an isolated system, the total energy remains constant, i.e., the total energy is conserved over time. Therefore, the initial energy of an isolated system is equal to the final energy of the system. As a result, energy can neither be destroyed nor created. Energy can only be transferred or transformed from one from to another.

The law of conservation of energy can be mathematically expressed as K₁ + U₁ = K₂ + U₂ where K₁ is the initial kinetic energy, U₁ is the initial potential energy, K₂ is the final kinetic energy and U₂ is the final potential energy.

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Knowing the power of the units and the electromagnetic waves is necessary to calculate the net energy unit.

What is power?

Power is the work completed in a given amount of time or time spent working. The joules per second (J/s)-based SI power unit is the Watt (W). Horsepower (hp), roughly equal to 745.7 watts, is sometimes used to describe the power of machines like motor vehicles.

What are electromagnetic waves?

Magnetic and electric fields vibrate together to produce electromagnetic waves, also known as EM waves. In other words, oscillating magnetic and electric fields make up electromagnetic waves (EM).

P=I*A=t=E/t

E=I*A*T

I= 153W/M^2

A=18.2*45.1*10^-4

A=0.082082

t=1.22mins = 1.22*60^S

t= 73.2

applying the formula E=I*A*T

E= 919.2855j

Therefore, the net energy absorbed in 1.22 min is 919.285j.

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MRI and FMRI are the  combination of neurological imaging techniques contains two methods that utilize magnetic imaging.

A magnetic field and radio waves produced by a computer are used in the magnetic resonance imaging (MRI) medical imaging procedure to provide precise images of the organs and tissues inside your body.

Large, magnetized tubes are the common shape of MRI equipment. The magnetic field briefly realigns water molecules in your body as you lie within the MRI machine. To produce cross-sectional MRI pictures, which resemble the slices of a loaf of bread, radio waves induce these aligned atoms to emit tiny signals.

Your doctor can evaluate your organs, tissues, and skeletal system with an MRI without performing any intrusive procedures. It generates detailed images of the body's.

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The centripetal force on the motorcycle at the top of the hill is 1696.42 N and the normal force is 1723.57 N.

The speed of the motorcycle is 25 m/s and the mass of the motorcycle is 342 kg and the radius of curvature of the hill is 126m.

(a) The centripetal force on any curvature is given by,

F =MV²/R

Where,

F is the centripetal force,

M is the mass of the motorcycle,

R is the radius of curvature of the hill,

V is the speed at which it is travelling.

Putting all the values,

F = 342 x 25 x 25/126

F = 1696.42 N.

The centripetal force is 1696.42 N.

(b) At the top of the hill, the centripetal force and the normal force will be away from the ground and in opposite direction of the weight of the motorcycle,

N = W- F

W is the weight,

F is centripetal force and N is the normal force.

Putting values,

N = 3420 - 1696.42

N = 1723.57N.

The normal force is 1723.57 N.

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The total force resisting the motion of the boat will be 26850.6 Newton when an outboard motor for a boat is rated 35 hp.

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The phase angle between the voltages of the capacitor and inductor in rlc circuit is 180°.

The phase angle is the component of a periodic wave. It is the shift between the AC current and the voltage on the measured impedance. The two elements of phase angle are reactance(X) and resistance (R).

The phrase for phase angle is, Xₐ = sinωt

where Xₐ= phase angle

ω = wavelength of the wave in 1 revolution

t = time period of 1 revolution

The instantaneous voltage ΔvR is in phase with the current, ΔvL leads the current by 90°, while ΔvC lags behind the current by 90°. The instantaneous values of these three voltages do add algebraically to give the instantaneous voltages across the RLC combination.

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February is the month that the Milky Way galaxy system begins to develop.

What is milky way galaxy?

The Milky Way is a massive cluster of stars, gas, and dust. Because it would appear to be a whirling pinwheel from the top or bottom, this galaxy is a spiral galaxy. About 25,000 light-years from the galactic center, on one of the spiral arms, is where the Sun can be found.

What is the Big Bang hypothesis?

According to the Big Bang hypothesis, the universe originated from a single, unfathomably hot, and dense point (also known as a "singularity") more than 13 billion years ago. It didn't happen at a location that was previously there. Instead, it was the one who started space's expansion and cooling.

Therefore, February is the month to be considered as the formation of the Milky way galaxy.

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I don't think any of the choices on the list fits B.

B appears to be the time between two compressions, with a rarefaction between them labeled by C .

The correct order of the planets in the solar system, starting closest to the sun will be the order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune followed by the possible Planet Nine.

The sun, our star, and everything gravitationally connected to it, including the moons, planets, and dwarf planets like Pluto, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, make up our solar system. The only known example of a habitable planet, the only star we can see up close, and the only planets we can explore with spacecraft are all found in the Solar System.

Understanding the formation and evolution of planets, as well as the conditions required for life, is dependent on studying the solar system. In a cloud of gas and dust known as the solar nebula, the Sun and the planets jointly created it 4.6 billion years ago.

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