g The Trans-Alaskan pipeline is 1,300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -71°C to +35°C. How much does the steel pipeline expand due to the difference in temperature?

Answer: 134 = 143 = 151 = 166 = 176

Hope this helps!!

Sorry if it's incorrect!!

:'(

Answer:

A) ΔU = 3.9 × 10^(10) J

B) v = 8420.75 m/s

Explanation:

We are given;

Potential Difference; V = 1.3 × 10^(9) V

Charge; Q = 30 C

A) Formula for change in energy of transferred charge is given as;

ΔU = QV

Plugging in the relevant values gives;

ΔU = 30 × 1.3 × 10^(9)

ΔU = 3.9 × 10^(10) J

B) We are told that this energy gotten above is used to accelerate a 1100 kg car from rest.

This means that the initial potential energy will be equal to the final kinetic energy since all the potential energy will be converted to kinetic energy.

Thus;

P.E = K.E

ΔU = ½mv²

Where v is final velocity.

Plugging in the relevant values;

3.9 × 10^(10) = ½ × 1100 × v²

v² = [7.8 × 10^(8)]/11

v² = 70909090.9090909

v = √70909090.9090909

v = 8420.75 m/s

The object assigned is used to copy all the data, and when accessing each character in a string, such as for copying purposes, you would typically use a while loop is a false statement.

Until the provided condition (there is only one) evaluates to false, a while loop iterates indefinitely. Your loop will then end, and the execution process will continue. While a conditional expression is evaluated as true, its statements are carried out.

The copy variable is a pointer to the same item and points to it. Basically, this object with the values a: 1, b: 2, is saying that there are now two methods to contact me. You must go through either the obj variables or the replica variable to reach me, and whatever you do to me through these routes (gateways) will have an impact on me.

Therefore, the object assigned is used to copy all the data, and when accessing each character in a string, such as for copying purposes, you would typically use a while loop is a false statement.

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Answer:

I the moment of inertia is less if the other children sit in the center

Τ = I α   the angular acceleration will be greater for a given torque Τ

Answer:

Let lo be the length of the rod in the frame in which it is at rest and s' is the frame which is moving with a speed 0.8c in a direction making an angle 60° with x-axis. The components of lo along and perpendicular to the direction of motion are lo cos 60° and lo sin 60° respectively.

Now length of the rod along the direction of motion

= lo cos 60°_/1-(0.8) 2/c2

= lo/2×0.6

= 0.3 lo.

Length of the rod perpendicular to the direction of motion.

= lo sin 60°

=_/3/2 lo

Length of moving rod

l = [(0.3lo)2+{lo_/3/2} 2] 1/2

= 0.916 lo.

Percentage contraction

= lo-0.916lo/lo×100

= 8.4%.

Explanation:

Answer:

\(1.302\ \text{kg/s}\)

Explanation:

\(\rho\) = Density of water = \(1\ \text{kg/L}\)

\(dV\) = Change in volume = \(220\times 0.355\ \text{L}\)

\(dt\) = Time elapsed = 1 minute = 60 seconds

Mass flow rate is given by

\(\dot{m}=\rho\dfrac{dV}{dt}\\ =1\times \dfrac{220\times 0.355}{60}\\ =1.302\ \text{kg/s}\)

The mass flow rate is \(1.302\ \text{kg/s}\).

Answer:

50 mph east

Explanation:

Answer:

A)828.8Hz

B)869.2Hz

Explanation:

Here is a complete question;

What frequency is received by a person watching an oncoming ambulance moving at 115 km/h and emitting a steady 753 Hz sound from its siren? Speed of sound is 345m/s

b. What frequency does she receive after the ambulance has passed?

Vs= speed of the ambulance

, We convert to m/s for unit consistency

= 115 km/h= 115km× 1000m/1m × 1hr/3600s= 31.94m/s

Dopler effect is when observed frequency of wave changes with respect to the source or when observed moves relative to transmitting medium can be expressed as

f'=[ (v + vo)/(v- vs)]*f

=[ (v )/(v- vs)]*f

The sign vo and vs depends on vthe direction of the velocity

f= frequency of ambulance siren= 753Hz

v= speed of sound in air= 345m/s

Vo= speed of observer= 0

A) we are to determine the f' of ambulance as heard by person as ambulance approaching.

To find the frequency f' observed by the person we use the expresion below

Then substitute the values

f'=[ (v )/(v- vs)]*f

=[ (345)/(345-31.94)]×753

= 828.8Hz

B)What frequency does she receive after the ambulance has passed?

To find the frequency f' observed by the person we use the expresion below

Then substitute the values

f'=[ (v )/(v + vs)]*f

=[ (345)/(345 + 31.94)]×753

= 869.2Hz

=

At 30°C, the rms speed of a sample of oxygen with a molar mass of 16 g/mol is approximately 482.34 m/s.

The root mean square (rms) speed of a gas molecule is a measure of the average speed of the gas particles in a sample. It can be calculated using the formula:

vrms = √(3kT/m)

Where:

vrms is the rms speed

k is the Boltzmann constant (1.38 x 10^-23 J/K)

T is the temperature in Kelvin

m is the molar mass of the gas in kilograms

To calculate the rms speed of oxygen at 30°C (303 Kelvin) with a molar mass of 16 g/mol, we need to convert the molar mass to kilograms by dividing it by 1000:

m = 16 g/mol = 0.016 kg/mol

Substituting the values into the formula, we have:

vrms = √((3 * 1.38 x 10^-23 J/K * 303 K) / (0.016 kg/mol))

Calculating this expression yields the rms speed of the oxygen sample:

vrms ≈ 482.34 m/s

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Answer:

\(v_f=4\:\mathrm{m/s\: in\:Biff's\:direction}\)

Explanation:

Using the Law of Conservation of Momentum, we can set up the following equation:

\(m_2v_2-m_1v_1=m_fv_f\), where \(m_1v_1\) is Bruce's momentum and \(m_2v_2\).

Plugging in given values, we get:

\(90\cdot7-45\cdot2=(90+45)v_f, \\v_f=\frac{540}{135}=\fbox{$4\:\mathrm{m/s}$}\).

As the frequency of radiation A is lower than that of radiation B. Then the wavelength of A will be more than that of radiation B.

The formula for the wavelength of radiation is

                    λ = v/f

where λ is the wavelength of the radiation

          c is the speed of the radiation

          f is the frequency of this radiation.

Both the frequency and wavelength were indirectly proportional to each other. The longer the wavelength, the lower will be the frequency and vice versa. The speed at which a wave propagates is equal to the product of its frequency and wavelength, justifying the link between these two parameters.

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1. It is unethical for Demario to cheat

2. Demario should not engage in cheating himself

3. Demario should not turn in cheating classmates without careful consideration

4. Reporting classmates may harm relationships, create animosity, and potentially lead to severe disciplinary actions.

A virtue ethics perspective may also be useful in this circumstance. Demario should make an effort to respect moral principles like honesty, fairness, and integrity while taking the potential repercussions into account and exhibiting empathy for his fellow students.

By employing this strategy, Demario behaves responsibly, deals with the problem subtly, encourages fairness in the educational setting, and upholds his or her own moral standards.

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If It takes Tiffany zero.25 hours to get to school in the mornings. She lives 4.5 miles far away from the faculty, then the speed of traveling off the Tiffany would be 28.96 kilometers per hour.

velocity of touring = general distance traveled by means of the Tiffany / general time

velocity of touring = 4.5 × 1.609 / 0.25

                              = 28.96 kilometers per hour

Speed in physics is a scalar quantity that refers to the rate at which an object moves, usually expressed in units of meters per second (m/s) or kilometers per hour (km/h). It is defined as the distance an object travels per unit of time, which means that it only takes into account the magnitude of the object's motion and not its direction.

Instantaneous speed refers to the speed of an object at any given moment, while average speed is calculated over a period of time. The speed of an object can be influenced by several factors, such as the forces acting upon it and the medium through which it is moving.

In addition to speed, there are other related concepts in physics, such as velocity, which includes both the speed and direction of an object's motion, and acceleration, which describes the fee at which an item's speed modifications over time.

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Answer:

\(force = mass \times acceleration \\ 100 = 50 \times a \\ a = 2 \: {ms}^{ - 2} \\ from : \: \: v = u + at \\ 150 = 100 + (2 \times t) \\ 50 = 2t \\ time = 25 \: seconds\)

In your business plan, the target market section should clearly identify both your primary and secondary market(s). The market analysis is basically the target market section of your business plan. It is a thorough examination of the ideal people to whom you intend to sell your products or services.

The formula that would be  used to calculate total resistance found in a parallel circuit containing more than 2 resistors is a reciprocal formula calculation.

Option A is correct.

The Greek letter omega () represents resistance, which is defined as a measure of the opposition to current flow in an electrical circuit.

This calculation using the reciprocal formula to demonstrate that in a parallel circuit, the current has a variety of paths to follow, which results in a lower overall resistance than the sum of the individual resistances.

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The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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Image is missing, so i have attached it

Answer:

Tension in back wire = 24.5 N

Explanation:

let the tension in the back wire be Tₒ

let the tension in the front wire be T

Applying static equilibrium in the vertical direction, we have:

T + Tₒ = (5 × 9.8) + (2.5 × 9.8)

T + Tₒ = 73.5

Where Tₒ = (2.5 × 9.8) = 24.5 N

Thus, Tension in back wire = 24.5 N

The tension in the back wire equals 24.5 N.

We can arrive at this answer with the static equilibrium formula, for that, let's consider that the tension in the back wire is represented by the letter "t," while the tension in the front wire is represented by the letter "T."

Therefore, we can use the following formula:

\(t= W*g\\t= 2,5*9.8\\t= 24.5 N\)

In this case, the letter "W" refers to the tool weight, while the letter "g" refers to gravity.

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The mass of the planet orbiting through the path can be calculated using its period of orbit, and radius . Here, the mass of the planet be 7.11 × 10³⁰ kg.

The orbital period of a spatial object is the time taken to revolve around a star or another spatial object through out an elliptical orbit.

The mass of the star can be calculated using the formula :

m = 4 π r³/G T²

given,

r = 4 Au = 4 × 1.5 × 10¹¹ m

T = 4 years = 12.6 × 10⁷ seconds.

G = gravitational constant 6.67 × 10⁻¹¹ m³/kg s²

Then M = 4 × 3.14 × (4 × 1.5 × 10¹¹ m)³/ 6.67 × 10⁻¹¹ m³/kg s² × ( 12.6 × 10⁷ s)²

             = 7.11 × 10³⁰ kg.

Therefore, the mass of the planet is 7.11 × 10³⁰ kg..

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Answer:

F₂ = 12 N

Explanation:

Resultant force = 60 N

Initial acceleration, a = 10 m/s²

We need to find the force required to give the wagon an acceleration of 2 m/s².

Since, F = ma

\(\dfrac{F_1}{F_2}=\dfrac{a_1}{a_2}\\\\\dfrac{60}{F_2}=\dfrac{10}{2}\\\\\dfrac{60}{F_2}=5\\\\F_2=12\ N\)

Hence, the new required force is 12 N.

Answer:

c

Explanation:

search it up

Answer:

Option A.

Explanation:

Because this is a lunar eclipse it normally happens 2 times a year.  This is a decently rare phenomenon due to the positions they have to be in to make a lunar eclipse.  Therefore, it is option A.

Answer:

The initial angular velocity of the bus wheel:

ω₀  ≈ 15.6 rad / s

Explanation:

Given:

V₀ = 8.22 m/s - Starting speed of the bus

V= 0 m/s - Final speed of the bus (the bus has stopped)

ω = 0 rad/c - Final angular velocity of the bus wheel

t = 13.3 s - Bus deceleration time

R = 0.530 m - Bus wheel radius

____________________

ω₀ - ?  - The initial angular speed of the wheels.

1) Bus linear acceleration module:

a = ( V₀ - V) / t = (8.22 - 0) / 13.3 ≈ 0.62 m/s²

2) Bus angular accelerations module:

ε = a / R = 0.62 / 0.530 ≈ 1.17 rad / s²

3) The initial angular velocity of the bus wheel:

ω₀ = ε·t  = 1.17·13.3 ≈ 15.6 rad / s

The skater's final angular velocity is approximately 9.86 rad/s.

The skater's final angular velocity can be calculated using the principle of conservation of angular momentum. The equation for angular momentum is given by:

L = Iω

where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

Initially, the skater has an angular momentum of:

L_initial = I_initial * ω_initial

Substituting the given values:

L_initial = 2.12 kg m² * 3.25 rad/s

The skater's final angular momentum remains the same, as angular momentum is conserved:

L_final = L_initial

The final moment of inertia is given as 0.699 kg m². Therefore, the final angular velocity can be calculated as:

L_final = I_final * ω_final

0.699 kg m² * ω_final = 2.12 kg m² * 3.25 rad/s

Solving for ω_final:

ω_final = (2.12 kg m² * 3.25 rad/s) / 0.699 kg m²

Hence, the skater's final angular velocity is approximately 9.86 rad/s.

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The temperature remains constant while the substance is changing state.The correct answer is option C.

When a substance undergoes a change of state, such as melting, boiling, or condensing, the temperature of the substance remains constant during the phase transition. The process of changing state requires the absorption or release of heat energy without a change in temperature.

For example, when a solid is heated, its temperature increases until it reaches the melting point. At this point, the substance starts to change from a solid to a liquid, but the temperature remains constant until all the solid has melted.
The absorbed heat energy is used to break the intermolecular forces holding the particles together, rather than increasing the kinetic energy of the particles.

Similarly, during the process of condensation or freezing, a substance releases heat energy as it changes state. This released energy is used to form intermolecular forces and convert the substance from a gas to a liquid or a liquid to a solid. The temperature remains constant until the phase transition is complete.
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Answer what? Apologies, but I don't see anything. (。>︿<)

Answer:

P

Explanation:

If the bat break it will get replaced and you will get another bat,but if u get hit with the ball it's dangerous in many ways

Answer:

50 protons 50 electrons and 69 neutrons...

Explanation:

the number of protons is equal to number of electrons. then mass number is the sum of protons and neutrons in a nucleus so for we to get the number of neutrons we take the mass number subtract the protons number.

Explanation:

The attached figure shows the free diagram of the person standing in a low cavern.

The forces acting on the person are as follows :

1. Its weight, mg (in downward direction)

2. F₁ = Force exerted by the Earth on the person (in upward direction)

3. F₂ = Force exerted by the ceiling on the person (in downward direction)