A 70.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 16.3 rpm. Answer the following:
What is the angular velocity of the centrifuge in rad/s ?
What is the linear velocity of the astronaut at the outer edge of the centrifuge?
What is the centripetal acceleration of the astronaut at the end of the centrifuge?
How many g’s does the astronaut experience?
What is the centripetal force and net torque experienced by the astronaut? Give magnitudes and directions.

Answer:

1.59 seconds

12.3 meters

but if you are wise you will read the entire answer.

Explanation:

This is a good question -- if not a bit unusual. You should try and understand the details. It will come in handy.

Time

Given

a = 0 This is the critical point. There is no horizontal acceleration.

d = 20 m

v = 12.6 m/s

Formula

d = vi * t + 1/2at^2

Solution

Since the acceleration is 0, the formula reduces to

d = vi * t

20 = 12.6 * t

t = 20 / 12.6

t = 1.59 seconds.

It takes 1.59 seconds to hit the ground

Height of the building

Givens

t = 1.59 sec

vi = 0     Another critical point. The beginning speed vertically is 0

a = 9.8 m/s^2   The acceleration is vertical.

Formula

d = vi*t + 1/2 a t^2

Solution

d = 1/2 a*t^2

d = 1/2 * 9.8 * 1.59^2

d = 12.3 meters.

The two vi's are not to be confused. The horizontal vi is a number other other 0 (in this case 12.6 m/s horizontally)

The other vi is a vertical speed. It is 0.

Answer:

a = G M / R^2      acceleration due to gravity

aE /aP = (ME / RE^2) / (MP / RP^2) = (ME / MP) * (RP^2 / RE^2)

Since MP = 2 ME   and RP = 2 RE

aE / aP = 1/2 * 2^2 = 2

So the gravitational field strength of the planet is 1/2 that of the earth or 4.9 N/kg

To calculate the efficiency of a Carnot engine, we can use the following formula:

Efficiency = 1 - (Tc / Th)

Where Tc is the temperature of the lower-temperature reservoir and Th is the temperature of the higher-temperature reservoir.

Let's calculate the efficiency for each scenario:

1. For a Carnot engine taking in heat from a reservoir at 480°C and releasing heat to a reservoir at 180°C:

Tc = 180°C = 453 K

Th = 480°C = 753 K

Efficiency = 1 - (453 K / 753 K)

Efficiency ≈ 0.399 (or 39.9%)

Therefore, the efficiency of the Carnot engine in this scenario is approximately 39.9%.

2. For a Carnot engine taking in heat at a temperature of 550 K and releasing heat to a reservoir at a temperature of 360 K:

Tc = 360 K

Th = 550 K

Efficiency = 1 - (360 K / 550 K)

Efficiency ≈ 0.345 (or 34.5%)

Therefore, the efficiency of the Carnot engine in this scenario is approximately 34.5%.

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Answer:

B. Extrusive igneous

Explanation:

Its B

The linear velocity is changing and the angular velocity is Constant best describes the passenger’s linear and angular velocity while passing a point.

The rate of change of angular displacement is defined as angular speed, and it is stated as follows:

ω = θ t

Where,

θ is the angle of rotation,

t is the time

ω is the angular velocity

The linear velocity is given as the product of angular velocity and radius.

v=ωr

In the circular motion, the linear velocity is changing. Because the radius is changing.While the angular velocity is constant.Because it is an independent quantity.

Hence the Linear velocity is changing and the angular velocity is Constant best describing the passenger’s linear and angular velocity while passing a point.

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Answer:

Free body diagram

Answer:

11.3

Explanation:

Answer:

Silicon Dioxide

Answer:

Silicon dioxide

Explanation:

The Chen notation of entity-relationship modelling can be used for both conceptual and implementation modelling.

The Chen notation of entity-relationship modelling can be used for both conceptual and implementation modelling. Notation refers to the symbols and conventions used to represent concepts in a model. Entity-relationship modelling is a technique used in database design to represent the relationships between entities. Conceptual modelling is the process of creating a high-level representation of a system, while implementation modelling involves creating a detailed representation of the system's implementation.

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The rotational inertia of a thin cylindrical shell of mass M, radius R, and length L about its central axis (X - X') is MR²/2.

The rotational inertia, also known as the moment of inertia, is a property that quantifies an object's resistance to rotational motion. For a thin cylindrical shell, the rotational inertia can be calculated based on its mass, radius, and length.

The formula for the rotational inertia of a thin cylindrical shell is given by I = MR²/2, where M represents the mass of the shell and R represents its radius.

In this case, since we are considering the rotational inertia about the central axis (X - X'), the length of the cylinder (L) does not come into play. The only relevant parameters are the mass (M) and radius (R).

Applying the formula, the rotational inertia of the thin cylindrical shell is MR²/2. Therefore, the correct answer is A. MR²/2.

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(8) A car starting with a speed v skids to a stop over a distance d, which means the brakes apply an acceleration a such that

0² - v² = 2 a d → a = - v² / (2d)

Then the car comes to rest over a distance of

d = - v² / (2a)

Doubling the starting speed gives

- (2v)² / (2a) = - 4v² / (2a) = 4d

so the distance traveled is quadrupled, and it would move a distance of 4 • 15 m = 60 m.

Alternatively, you can explicitly solve for the acceleration, then for the distance:

A car starting at 50 km/h ≈ 13.9 m/s skids to a stop in 15 m, so locked brakes apply an acceleration a such that

0² - (13.9 m/s)² = 2 a (15 m) → a ≈ -6.43 m/s²

So the same car starting at 100 km/h ≈ 27.8 m/s skids to stop over a distance d such that

0² - (27.8 m/s)² = 2 (-6.43 m/s²) d → d ≈ 60 m

(9) Pushing the lever down 1.2 m with a force of 50 N amounts to doing (1.2 m) (50 N) = 60 J of work. So the load on the other end receives 60 J of potential energy. If the acceleration due to gravity is taken to be approximately 10 m/s², then the load has a mass m such that

60 J = m g h

where g = 10 m/s² and h is the height it is lifted, 1.2 m. Solving for m gives

m = (60 J) / ((10 m/s²) (1.2 m)) = 5 kg

(10) Is this also multiple choice? I'm not completely sure, but something about the weight of the tractor seems excessive. It would help to see what the options might be.

Answer:

360 ÷ 4 = 90

Example

A 360° circle is cut into 4 peaces in the form of + or × . It's one side is called 90°

The magnitude of the self-induced emf produced by the increasing current in the solenoid is approximately 130 mV.

To calculate the self-induced emf produced by the increasing current in the given solenoid, we can use the formula:

e = -L (di ÷ dt)

where e is the self-induced emf, L is the inductance of the solenoid, and (di/dt) is the rate of change of current.

The inductance of a solenoid can be calculated using the formula:

L = μ × n² × A × l

where μ is the permeability of the material inside the solenoid (we will assume it to be the permeability of free space, μ0), n is the number of turns per unit length, A is the cross-sectional area, and l is the length of the solenoid.

Substituting the given values, we get:

μ0 = 4π x 10⁷ T m/A

n = 268 ÷ 0.179 m = 1497 turns/m

A = 3.14159 cm² = 3.14159 x 10⁻⁴ m²

l = 17.9 cm = 0.179 m

(di ÷ dt) = 9.55 A/s

L = μ0 × n² × A × l

= 4π x 10⁻⁷ × (1497)² × 3.14159 x 10⁻⁴ × 0.179

= 0.0136 H

e = -L (di ÷ dt)

= -0.0136 × 9.55 x 10⁶ (since 1 mV = 10⁻³ V)

= -129.98 mV

≈ 130 mV

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Gas particles can change to solid particles if the temperature decreases.

The state of matter of a substance is determined by its temperature and pressure. When the temperature of a gas decreases, its particles lose kinetic energy and slow down. This decrease in kinetic energy leads to a decrease in the average speed of gas particles.

As the temperature continues to decrease, the particles lose energy and move closer together. At a certain temperature known as the condensation point or the freezing point, the gas particles no longer have enough energy to overcome the intermolecular forces holding them together.

At this point, the gas undergoes a phase transition and changes into a solid. The process of gas turning into a solid is called condensation or freezing, depending on the specific substance.

During condensation, the gas particles arrange themselves in a more orderly and structured manner, forming a solid. The transition from gas to solid involves the release of energy, known as heat of fusion.

In summary, when the temperature of a gas decreases below its condensation or freezing point, the gas particles lose energy, slow down, and eventually come together to form a solid.

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The difference between longitudinal and transverse waves is with respect to their mediums.

Transverse waves and longitudinal waves are two different forms of waves that differ in the direction that the medium is moving. When the medium's vibration is parallel to the wave direction, a transverse wave is produced. At a right angle to the wave's direction of travel, amplitude is recorded. When the medium being employed vibrates parallel to direction of wave, longitudinal waves are produced.

Amplitude is measured at a zero-degree angle to the wave's travel direction. Transverse waves include crests and troughs, whereas longitudinal waves have compressions and rarefactions. While longitudinal waves can move through fluids like liquids and gases, transverse waves need a relatively rigid medium to do so.

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Answer: this answer is D. That's what I think it is

Explanation:

Unless a light ray comes into contact with a surface or enters a different material, it travels in a​ straight line.

When light enters a medium with a different speed or transitions from a fast to a slow medium, refraction occurs. According to Snell's law, if a light ray is incident ordinarily on the surfaces, then deviating from the normal will always lengthen the travel time.

Theoretically, sine (angle of incidence)*index of refraction of the incident media = sine (angle of refraction)*index of refraction of the refractive medium

Sine (0)=0 because the angle of incidence is 0 degrees.

As a result, the light ray will travel straight.

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During the ride, no energy is gained or lost. The automobiles' kinetic energy passes to the track, shaking it as energy flows from one location to another.

Energy transformation is when the energy is transformed into another energy. Kinetic energy is converted into potential energy, which is subsequently converted back into kinetic energy.

Friction between the cars and the track also converts it from kinetic to thermal energy. The overall amount of energy doesn't change, though.

Therefore, no energy is acquired or lost during the ride. The track is shaken as a result of the kinetic energy of the cars moving from one place to another.

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The diameter of a copper conductor is 0,0028 mm.

Resistance: R = 2.6 Ω

Resistivity: ρ = 1.72×10⁻⁸ Ω.m

Long: L = 100 m = 100000 mm

To answer this question, the following formula is used:

ρ = R \(\frac{A}{L}\)

A = \(\frac{pL}{R}\)

A =  \(\frac{(1.72x10^{-8})(100000)}{2.6}\)

A = \(\frac{1,72 x 10^{-3}}{2,6}\)

A = 0,66 x 10⁻³

A = 6,6 x 10⁻⁴ mm

To find the diameter: use the formula for the area of ​​a circle

A = πr²

6,6 x 10⁻⁴ = (3.14)r²

r² = 6.6 x 10⁻⁴/3.14

r² = 2.1 x 10⁻⁴

r = \(\sqrt{2.1 x10^{-4}}\)

r = 1,4 x 10⁻²

r = 0,0014 mm

Diameter:

D = 2r

D = 2(0,0014)

D = 0,0028 mm

So, the diameter of a copper conductor is 0,0028 mm

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Inertial mass and gravitational mass are two different types of mass. The main difference between the two is that inertial mass is the property of an object that determines how much force is required to accelerate it, while gravitational mass is the property of an object that determines the strength of its gravitational attraction to other objects.

Inertial mass is the measure of an object's resistance to changes in its motion. It is the property of an object that determines how much force is required to accelerate it. It is defined as the ratio of the force required to produce an acceleration in an object to the acceleration produced.

Gravitational mass is the property of an object that determines the strength of its gravitational attraction to other objects. It is the property that causes two objects to be attracted to each other. Gravitational mass is the mass that appears in Newton's law of universal gravitation, which states that the force of gravity between two objects is proportional to the product of their gravitational masses and inversely proportional to the square of the distance between them.

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Answer:

So, some examples may include the presence of four or five different species of tree in a woodland forest, or perhaps 100 different species of fish, crustaceans and coral in a certain reef.

l will post the option later

pls mark me brainlest

option d

Cells that innervate neuromuscular junctions originate from the central nervous system (CNS).

The central nervous system (CNS) is one of the two main parts of the nervous system, with the other being the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord, which are responsible for receiving, processing, and sending information throughout the body.

The brain is the control center of the body and is responsible for cognitive functions such as thinking, memory, and decision-making. The spinal cord is responsible for transmitting information between the brain and the rest of the body, and for controlling reflexes.

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Answer:

PLATO!!!!! THESE ARE RIGHT!!! OTHERS ARE NOT CORRECT. I JUST GOT IT RIGHT ON PLATO

Explanation:

1. federal water pollution control act

2.nature conservancy

3. clean air act

4. water quality act

5. endangered species preservation act

6. clean water act

7. energy supply and environmental coordination act

8. eastern wilderness act

9. toxic substance act

10. intergovernmental panel on climate change (IPCC).

"Yes, the electronic crime scene is handled completely differently from a traditional crime scene. The electronic crime scene refers to a crime that has taken place in the digital world.

In contrast, a traditional crime scene refers to a crime that has taken place in the physical world, and it is evident that the two scenarios are handled differently.

An electronic crime scene refers to the area or place where electronic evidence is gathered for use in investigations or legal proceedings. Electronic evidence refers to information or data stored, created, or transmitted in electronic devices, including computers, smartphones, flash drives, and other digital devices. The collection of electronic evidence differs significantly from the collection of traditional evidence. The first step is the preservation of electronic evidence. In a traditional crime scene, it is possible to cordon off the area using yellow tapes, close windows, and take photographs of the scene. However, this is not the case with an electronic crime scene since electronic evidence is intangible. This is why digital forensic investigators begin the evidence preservation process by creating a forensic image of the electronic device under investigation. This is done to prevent data loss or alteration before investigations commence.

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The unit weight of water refers to the amount of mass per unit volume of water. In the metric system, this is commonly expressed in kilograms per cubic meter (kg/m3).

In conclusion, the unit weight of water is an important concept in many fields and is widely used to express the mass per unit volume of water. In the metric system, it is commonly expressed in kilograms per cubic meter (kg/m3), and its value can vary depending on temperature and pressure.

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The acceleration when a 44.7 N net force is applied to 7.7 kg object is 5.8 m / s²

According to Newton's second law of motion,

F = m a

F = Force

m = Mass

a = Acceleration

m = 7.7 kg

F = 44.7 N

a = F / m

a = 44.7 / 7.7

a = 5.8 m / s²

Newton's second law of motion states that the force is equal to the rate of change of momentum. It can also be said as acceleration of an object is directly proportional to the net force acting on the object.

Therefore, the acceleration of the object is 5.8 m / s²

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Answer:

I believe you are talking about Emile Durkheim

Explanation: Fun Fact:

He is most well known as the author of On the Division of Social Labor The Rules of Sociological Method, , and The Elementary Forms of Religious Life

Answer:

there very old

Explanation: