what is the maximum total force exerted on a astronaut by her seat during the launch of a space shuttle?

This inquiry deals with the idea of semi-projectile motion. The equations for horizontal and vertical motion can be used to solve it.

"2.6 m/s" is the bare minimum horizontal velocity needed.

We'll start by examining the stunt person's vertical motion. To determine the motion's time interval, we shall apply the second equation of motion in the vertical direction.

You are looking for Vx0 (initial velocity in the X direction) use this formula

remember there is no acceleration in x direction, only Y

X = x0 + Vx0(t) + (1/2)at^2

X= 0 + Vx0 (t) + 0

x= Vx0 (t)

Vx0 = x/t

what we are missing is Time, so u can get this by using the Y formula to find the time

Remember there is no velocity in the Y direction

Y=y0 + Vy0(t) - (1/2)gt^2

y= 0 +0 - (1/2)gt^2

(3.0 m *2) / 9.80m/s/s = t^2

0.61224 = t^2

t = 0.78 s

now plug this time back into this formula from above

Vx0 = x/t

= 2.0m / 0.78s

=2.6 m/s

Hence the minimum horizontal velocity is 2.6m/s

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Answer:

Explanation:

Given:

m = 1 200 kg

V = 54 km/h = 15 m/s

___________

Wk - ?

Wk = m·V² / 2

Wk = 1200·15² / 2 = 270 000  J   or Wk = 270 kJ

A solid sphere with a radius of 0.012 m and a mass of 0.26 kg, then the moment of inertia of solid sphere will be equal to 0.149 × 10⁵ kg - m².

The moment of inertia of a rigid body—also referred to it as the mass moment of inertia, angular mass, 2nd moment of mass, or—most precisely—rotational inertia—determines the torque required for a desired angular acceleration about just a rotational axis, much like mass helps determine the force required for a desired acceleration.

From the given information in the question,

Mass, m = 0.26 kg and

Radius, R = 0.012 m.

The MOI of sphere, I = 2/5 mR²

I = 2/5 (0.26)(0.012)²

I = 0.149 × 10⁻⁵ kg-m².

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Work is depend on fore and distance.

What is work?

Work is defined as the energy that is applied to or removed from an object by applying force along a displacement. In its simplest form, it equals the product of the force's magnitude and the distance travelled for a constant force directed in the direction of motion.

Sum of forces:

∑F = ma

T − Mg = M (g/4)

T = 5/4 Mg

Work = force × distance

W = Tℓ

W = 5/4 MgℓSum of forces:

∑F = ma

T − Mg = M (g/4)

T = 5/4 Mg

Work = force × distance

W = Tℓ

W = 5/4 Mgℓv

Hence, the work has ben done by the tension in te string is 5/4 Mgℓv

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Answer:

Explanation:

Given:

ρ = 1 030 kg/m³ - Salt water density

h = 120.0 m - Submergence depth of the submarine

_____________________________

p - ?

Pressure:

p = ρ·g·h

p = 1030·9.8·120.0 ≈ 12·10⁶ Pa    or  p = 12 MPa

The TV was on for 4 hours during the day.

E = 0.8 kWh

P = 200 watts

t = E/P

t = 0.8/0.2

t = 4 hours

The electric energy definition: the capability to carry out work. Electrical power comes from the appeal or repulsion of negatively and positively-charged molecules. Electrical energy is both potential and kinetic power.

Electric energy is a kind of kinetic power due to transferring electric charges . The quantity of power relies upon on the rate of the costs – the quicker they move, the greater electric energy they carry.

Power is an important a part of present day life and crucial to the U.S. economic system. people use energy for lighting fixtures, heating, cooling, and refrigeration and for working home equipment, computer systems, electronics, equipment, and public transportation structures.

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The breaking stress of the alloy is 74.131 MPa

Stress = force/cross sectional area

          = 94.2/(3.14*(0.00125^2)/4) = 73131210 Pa = 74.131 MPa

The amount of forces that induce deformation is measured in terms of stress. Force per unit area is a common definition of stress. Tensile stress is the term used to describe a force that pulls on an object and causes it to elongate, much as how an elastic band stretches. Compressive stress is what we refer to when forces cause an object to compress. Bulk stress is the term used to describe pressure exerted on an object from all sides, such as a submarine submerged in water (or volume stress). In some circumstances, the operating forces might not be tensile or compressive but yet result in an observable deformation. Imagine, for instance, that you are tightly gripping a book with one of your hands.

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0.03M is  the concentration of sodium hydroxide.

Here from calculation concentration of NaOH -

100×0.019/ 20 = .095 M

For acetic acid-

Volume acid used, V1= 25 ml

Concentration of acetic acid N1= ?

Volume of NaOH used, V2 = 8.99 ml

Concentration of NaOH used, N2= .095 M

From N1×V1= N2×V2

N1 = N2×V2 / V1

N1 = .095 × 8.99/25

N1 = 0.03M

concentration is the quantity of a material in a certain area. The ratio of the solute in a solution to the solvent or whole solution is another way to define concentration. In order to indicate concentration, mass per unit volume is typically used. The solute concentration can, however, alternatively be stated in moles or volumetric units. Concentration may be expressed as per unit mass rather than volume. Although concentration is often used to describe chemical solutions, it may be computed for any combination.

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Answer:

5.1 Ω

Explanation:

Basic Law   v = ir

     so   v/i = r = 61/12 = 5.1 Ω

No, the bag does not hold in case of the maximum force a grocery sack can withstand and not rip is 250 n. if 20.0 kg of groceries are lifted from the floor to the table with an acceleration of 5.0 m/s^2.

The second law of motion of Newton describes how things behave when all external forces are not equal. The second rule states that an object's acceleration depends on both its mass and the net force acting on it. The acceleration of an item is defined by the net force acting on it and is inversely related to its mass.

Given,

Fₓ = 250

m = 20kg

[tex]a_{gravity}[/tex] = 9.81 m/s2

[tex]a_{pull}[/tex] = 5 m/s2

Fₙ = m(a+g)

Fₙ = 20 kg ( 5 m/s2 + 9.81 m/s2)

Fₙ = 20 (14.81)

Fₙ = 296.2

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The angular speed of the tires with 52.2 cm diameter about their axles if the automobile is traveling at 60.5 km/h is 64.65 rad / s

v = r ω

v = Linear / Tangential velocity

r = Radius

ω = Angular velocity

v = 60.5 km / h = 16.81 m / s

r = 52.2 / 2 cm = 26.1 cm

r = 0.26 m

ω = v / r

ω = 16.81 / 0.26

ω = 64.65 rad / s

Therefore, the angular speed of the tires about their axles is 64.65 rad / s

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To raise the temperature of 100g of water from 20C to 40C, 8.4k joules are required.

A joule is the amount of energy expended when a one-newton force is exerted across a one-meter distance. One joule is equal to one watt of electricity emitted or lost over the course of one second.

One joule is therefore not a lot of energy. The kilojoule (kJ), which has a value of 1,000 J per kilojoule, serves as the standard unit of energy since it is typical to measure energies in thousands of joules. The use of calories in nutrition is one such instance. A calorie is a common unit of measurement for dietary energy content.

A joule of energy transmitted to an object is equal to one newton of force. Additionally, it gauges energy.

It, therefore, has 8.4k joules.

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Its distance given that the hubble constant is 70 km/s/mpc , is 117.91 Mpc.

What is hubble constant ?

Finding the true value of the Hubble constant is one of the greatest challenges in modern astronomy and could revolutionize our understanding of the universe. As such, scientists at the University of Chicago and many institutions around the world are trying to determine the numbers using multiple methods.

For a celestial body (such as a star or galaxy) at a known distance from Earth, you can use the Hubble constant to predict how fast it is moving away from Earth.

However, the true value of the Hubble constant is debatable. Based on the underlying physics that scientists believe drives the evolution of the universe, the Hubble constant should be about 68 km/s/Mpc, which is what astronomers see around us. does not match observations of real stars and galaxies in the sky. A team led by UChicago astronomer Wendy Freedman made 72 landmark measurements in 2001. The most recent accurate measurements of the distance and motion of a distant exploding star show the Hubble constant to be 69.8 km/s/Mpc, whereas other reports place this figure at 74 km/ Pushing up to s/Mpc.

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Tyree is extremely good at identifying the motivations and intentions of the people he meets. according to Gardner, Tyree would most likely score very well on a test of interpersonal intelligence.

The ability to recognize differences and overcoming's in situations, to centre oneself in space, to reason, to make plans, to solve problems and set them aside, to think abstractly, to comprehend and produce ideas, to store information in the mind and then retrieve it later, and to learn from experiences are just a few of the many functions of intelligence.  

Even in larger species like chimpanzees, intelligence-related abilities like language proficiency are clearly distinguishable from human abilities. Being born slim or intelligent is treated just as harshly as being born talented. To put it simply, intelligence is a hallmark of personal integrity.

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Densities are commonly used to characterize and infer the composition of various sorts of mixes as well as to distinguish between pure materials.

Density is often measured in grams per cubic centimeter. For instance, water has a density of 1 grams per cubic centimeter, compared to Earth's density of 5.51 grams. The kilograms per cubic meter unit is another way to express density (in metre-kilogram-second or SI units). A substance or object's mass is a measure of how much matter there is in it. The basic SI unit of mass is the kilogram (kg), although smaller quantities can also be measured in grams (g). Density is one of an object's most important and useful physical properties.

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If the system produces 40,048 watts, then the energy worth per day would be 96.152 kWh, and the electricity cost per day would be $57.67.

According to the question given,

Power = 40,048 = 40.048 kW

Time = 1 day = 24 hours

Cost = $0.06 for one KWh

Energy = Power × time

Energy = 40.048 × 24 kWh

Energy = 961.152 kWh

The total cost for one day would be:

Cost = $(0.06 × 961.152)

= $57.67

So, the energy worth per day would be 96.152 kWh, and the electricity cost per day would be $57.67.

The kilowatt-hour (kWh) is a unit of energy equal to one kilowatt of power spent for one hour. The kilowatt-hour is not a standard unit in any formal system, but it is often used in electrical applications.

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The answer that the moon of Earth is unusually large is correct.

As all other options, in one way or another, refer to factual information about our solar system, such as the fact that the number of small rocky planets is equal to the number of large gas-rich planets and that planets and moons typically orbit in the same plane.

The Sun and the planets and objects  that orbit it make up the gravitationally bound system known as the Solar System. A massive interstellar molecular cloud gravitationally collapsed to make it 4.6 billion years ago. The Sun contains the great majority of the system's mass, with Jupiter holding the lion's share of the remaining mass.

In our solar system, Earth, Mars, Mercury and Venus are terrestrial, or rocky, planets means they are made up of rock, stones and have territorial area.

So, now we can say that “the earth has an unusually large moon” is the correct option.

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An astronomer on Earth witnesses two spacecraft traveling apart from one another along an axis and passes through the earth at a relative speed of 0.70c.

Astronomers do research on planets, stars, and some other celestial objects. They employ both space-based technology, like the Hubble Space Telescope, and ground-based technology, such optical telescopes. Some astronomers investigate far-off galaxies and phenomena like black holes & neutron stars.

Astronomy, atmospheric science, physics, and astrobiology, the study of space biology, are some of the scientific fields that are most likely to result in employment at NASA. NASA employs 15 different categories of scientists, demonstrating the importance of scientists from all specialities in space research.

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The buggies moving right after the collision will move at 5m/s and 3 m/s respectively.

An elastic collision is a collision in which there is no internet loss in kinetic energy within the gadget because of the collision. each momentum and kinetic electricity are conserved portions in elastic collisions.

Calculation:-

Since  both, the biggie shave the same mass then according to the elastic collision their velocity will exchange upon each other

mass 1 = 15 kg

mass 2 = 15 kg

Velocity before collision

V1 = 3m/s

V2 = 5 m/s

Velocity after collision

V1 = 5 m/s

V2 = 3 m/s

Elastic collisions arise whilst both the momentum and kinetic energy are conserved, just like how billiard balls bounce off each different and move at the same speeds as earlier. Inelastic collisions appear whilst simplest the momentum is conserved but not the kinetic power.

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If the weight of an object on the earth is 200N, its weight on the moon will be 40 N

W = m g

W = Weight

m = Mass

g = Acceleration due to gravity

In Earth,

W = 200 N

g = 10 m / s²

m = W / g

m = 200 / 10

m = 20 kg

In moon,

g = 2 m / s²

W = 20 * 2

W = 40 N

Therefore, if the weight of an object on the earth is 200N, its weight on the moon will be 40 N

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The maximum acceleration of the truck when it carries load of 1000 kg is 0.67 m/s².

Given data :

Force moving the truck = empty truck mass x max. acceleration

= 2,000 kg x 1 m/s²

= 2,000 N

The force will remain the same even with a load of 1,000 kg because that is the maximum force the truck is capable of producing.

Therefore,

2,000 N = mass with load x acceleration

2,000 N = (2,000 kg + 1,000 kg) * acceleration

2,000 N = 3,000 kg × acceleration

=> acceleration = 2,000 N / 3,000 kg

=> acceleration = 0.67 m/s²

Its maximum acceleration will be 0.67 m/s².

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Answer:

Explanation:

Mass on the Moon:

m = 20 kg

An outlier detection technique based on density Finding data items with behavior that deviates significantly from expectations is the process of outlier detection, sometimes referred to as anomaly detection.

These things are referred to as anomalies or outliers. Another helpful unsupervised machine learning approach is LOF, which instead of evaluating the full data distribution to identify outliers, does it in relation to particular neighborhoods ( Brewing et al., 2000 ). The nearest neighbor search is used by the density-based LOF technique to find the anomalous spots.

Anomaly detection methods, sometimes referred to as outlier detection, are becoming more and more common in the data mining industry nowadays.

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The molecular shape or molecular geometry of electron pair repulsion is determined by the no of electron pair present.

The lightest known stable subatomic particle is the electron. It has an equal negative charge to that of 1.602176634 coulombs, which is regarded as the fundamental unit of electric charge. Only 1/1,836 of a proton's mass, or 9.1093837015 1031 kg, is present in the rest mass of the electron.

As a result, compared to a proton or neutron, an electron is thought to be almost massless, and its matter is not taken into account when determining an atom's mass number.

The quantity of electron pairs in a molecule affects its form. Electron pair interactions are typically repulsive. Electron couples align themselves to reduce their attraction to one another. It is assumed that the valence, or outermost, electron shell, is spherical

Therefore, the molecular shape or molecular geometry of electron pair repulsion is determined by the no of electron pair present.

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The light will continue to travel at 34.8° with the normal. The result is obtained by using the Snell's Law.

The Snell's Law is a formula to describe the relationship between the angles of incidence and refraction when a light passes through two medias. It can be expressed as

ni / nr = sin θr / sin θi

Where

Note that the angles are measured from the normal line.

The critical angle can be expressed as

sin θc = ni / nr

If the critical angle is 53.7° and the light enters the substance from air at 45.0° with the normal, what angle with the normal will it continue to travel?

We can combine the above two formulas to find the refracted angle.

ni / nr = sin θr / sin θi

sin θc = sin θr / sin θi

sin 53.7° = sin θr / sin 45°

0.806 = sin θr / 0.707

sin θr = 0.707 × 0.806

sin θr = 0.570

θr = 34.8°

Hence, the light will continue to travel at 34.8° with the normal.

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The wavelength of light will the first-order dark fringe is 1.205 μm.

Calculation:-

We know that, for the 1st order dark fringe, we have

y(dark,0 )= ( 0 + 1/2)*λ*L/d

0.00484 m =( 0.5*λ*3 ) /0.00037376

= λ =( 0.00484*0.00037376)/(0.5*3)

= λ = 1205*10^-9 m

= 1.205 μm

The wavelength of light determines its color and the wavelength of sound determines its pitch. Wavelength is the gap among two wave crests and the equal for wave troughs. Frequency is the variety of oscillations that bypass through a specific point in a single 2d, measured in cycles according to 2nd. the distance among peaks is called the wavelength.

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The dot on the screen in the center of the fringe e to the left slit than it is from the dot to the right slit is 940 nm.

The wavelength of mild is defined as. It is far denoted with the aid of the Greek letter lambda (λ). consequently, the space between both one crest or trough of one wave and the next wave is known as wavelength.

A bright fringe creates constructive interference, the wavelength is always in multiple forms.

At the center fringe, the difference is (470 nm)(0) = 0

For the first maximum, the difference is (470 nm)(1) = 470 nm

For the second maximum, the difference = (470 nm)(2) = 940 nm

Thus, for nth maxima, the difference is (470 nm)(n)

From the image uploaded, C is located on the second maximum, therefore the difference is given as  (470 nm)(2) = 940 nm

Therefore, the dot on the screen in the center of the fringe is 940 nm.

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The first thing the student group should do is research the amount of electricity the school uses and where it comes from.

The students should then develop a plan to reduce the amount of electricity the school uses. The plan should include measures to reduce the school's reliance on electricity, such as promoting the use of solar power or wind power. The plan should also include measures to increase the efficiency of the school's electricity use, such as retrofitting the school's lighting or installing energy-efficient appliances. The students should then present their plan to the school administration and work with them to implement the plan.

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The speed of the rock right before it hits the water is 15.23 m/s.

The speed of the rock should follow a uniform motion. Uniform motion is an object's motion under acceleration. It should follow the rule

v' = v + a . t

v'² = v² + 2a . s

s = v . t + 1/2 . a . t²

where v' is final velocity, v is initial velocity, a is acceleration, t is time and s is displacement.

From the question above, we know that

s = 9.33 m

v = 7.01 m/s

a = g = 9.8 m/s²

By using the second equation, we can calculate the speed of  the rock right  before it hits the water

v'² = v² + 2a . s

v'² = 7.01² + 2 . 9.8 . 9.33

v'² = 232.0081

v' = 15.23 m/s

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The reading of voltmeter of a thermocouple circuit made with copper (cu) and constantan (c) wires  is  8791μV.

We have Seebeck coefficients of copper and constantan, also we have temperature of source as 25°C and temperature of ice is 0°C

We also know that Seebeck coefficient is given by the negative of ratio of change in voltage to the change in temperature, or in other words

S= -ΔV/ΔT

Now, Seebeck coefficient of copper(6.5μV/K) and Seebeck coefficient of constantan as -35 μV/K

Therefore, net Seebeck coefficient of thermocouple is =6.5+(-35)= -29.5 μV/K

Now, temperature difference is 25°C as temperature of ice is 0°C

We need to convert degree in kelvin as standard calculations involves temperature in kelvin.

We use K=C+273

Therefore, temperature difference is =25+273=298K

Therefore, according to the formula, we get

Voltage= - net  Seebeck coefficient × net temperature change

=>V= -(-29.5μV/K×298K)

=>V=8791μV

Hence, voltmeter reads 8791μV.

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(Complete question) is :

Consider a thermocouple circuit made with copper (Cu) and constantan (C) wires. The Seebeck coefficients of copper and constantan are: Acu=6.5 μV/K, ac=-35 μV/K. If T1 = 25°C, what's the reading of Voltmeter?