A particle moving along a straight line such that its acceleration is defined as a= (−2v)m/s
2
, where is v in m/s. It has a velocity v=20 m/s when s=0 m and t=0 s. Determine, as a function of time, the particle's: a. Position b. Velocity c. Acceleration

Answer:

Explanation:

Nnewton=kgm/s²

To draw the circuit diagram with four 15 ohm resistors connected in a series to a 45-v battery, along with an ammeter and voltmeter, follow the steps below:Step 1: Place the batteryTo begin with, draw the 45 V battery at the top of the page, as shown in the figure below.  Step 2: Add resistorsNext, add the four 15 ohm resistors in a series circuit after the battery, as shown in the figure below.  

Step 3: Add the ammeterIn the circuit, an ammeter is placed in series with the resistors to calculate the total current in the circuit. Connect the ammeter between the last resistor and the negative terminal of the battery, as shown in the figure below.Step 4: Add the voltmeter. Finally, a voltmeter is placed in parallel with the resistors to determine the voltage across them.

Connect the voltmeter in parallel with each resistor, as shown in the figure below. [Figure]Hence, this is how the circuit diagram with four 15 ohm resistors connected in a series to a 45-v battery looks like, along with an ammeter and voltmeter.

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The correct order is Option B

A dwarf planet is a celestial body that orbits the sun and has enough mass to assume a roughly spherical shape under its own gravity, but is not large enough to have cleared its orbit of other debris. In other words, a dwarf planet shares some of the characteristics of a planet, but is not considered a full-fledged planet because it has not cleared its orbit of other objects.

Dwarf planets are considered part of a larger class of objects known as small solar system bodies, which also includes comets, asteroids, and other objects. They are important objects to study because they can provide insights into the formation and evolution of our solar system, as well as the broader universe.

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(a) Yes, our velocity changes because the direction is changing. (b) No, we do not accelerate.

(a) Velocity is a vector quantity that includes both magnitude (speed) and direction. When we round a curve and drive east, the direction of our motion changes.

Therefore, even if our speed remains constant, the velocity vector changes because it now points in the eastward direction instead of the previous direction.

(b) When the magnitude of the direction of the velocity is changed, we say that acceleration has occurred. In this scenario, although the direction of your velocity changes, your speed remains constant.

Since the rate at which velocity changes determines acceleration, there cannot be acceleration without a change in velocity.

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The equivalent resistance between points A and B in the diagram is 22 Ω

We shall begin by obtaining the equivalent resistance in parallel (i,e the three 6 Ω resistor). Details below:

1/Rₜ = 1/R₁ + 1/R₂ + 1/R₃

1/Rₜ = 1/6 + 1/6 + 1/6

1/Rₜ = 3/6

1/Rₜ = 1/2

Rₜ = 2 Ω

Finally, we shall determine the equivalent resistance between A and B (i.e series arrangement). Details below:

R = R₁ + R₂ + R₃ + R₄ + R₅ + R₆ + R₇ + R₈ + R₉ + R₁₀ + R₁₁

R = 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2

R = 22Ω

Thus, we can conclude that the equivalent resistance is 22 Ω

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Answer:

105.6 KJ

Answer

3.7/5

4

hope this will help you friend.

It is not possible to determine if one needs to increase the pull on the string when increasing the speed of the stopper without additional information about the apparatus and the forces involved.

Factors such as the mass of the stopper, the tension in the string, and the radius of the circle being traversed by the stopper will all affect the necessary force to keep the stopper moving in a circular path.

It is recommended to take measurements and analyze the data to understand the relationship between the speed of the stopper and the force required to keep it moving in a circle.

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According to a fire test by the National Institute for Standards and Technology (NIST), flashovers can occur within as little as 3 to 4 minutes after flames are ignited in a room or enclosed space.

A flashover is a rapid and extreme escalation of a fire, where all the combustible materials in a room simultaneously ignite and cause the entire space to become engulfed in flames. Flashovers are one of the most dangerous and deadly aspects of a fire, and they can be triggered by a variety of factors such as high temperatures, lack of ventilation, and the presence of flammable materials. Understanding the conditions that can lead to a flashover is important for fire safety planning and prevention.

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yes the answer is force

Explanation:

Force is a push or pull which can change the state of body whether it is rest or in motion or tries to change the state of body.

Answer:

I wanna say C

Explanation:

because A would be getting it nowhere and B would just take more time but when you use C it would be the greatest force.

Answer:

I would assume that the box slows down due to the frictional force between the floor and the box. In addition, the frictional force points opposite of the boxes motion. As we know, the box was given an initial speed, therefore, having an applied force. Hence, we can conclude that  the frictional force opposing the motion of the crate is equal to the applied force but acting in the opposite direction. This frictional force is called static friction. When we increase the applied force (push harder), the frictional force will also increase until it reaches a maximum value.

Hope that helps!

Michaelis-Menten equation assumes that enzyme-substrate complex forms and breaks down rapidly compared to the overall reaction rate and that reaction occurs under steady-state conditions.

Michaelis constant Km is a measure of affinity of enzyme for its substrate and is defined as the substrate concentration at which reaction rate is half its maximum value.

Michaelis-Menten equation is used to model rate of enzyme-catalyzed reaction as a function of substrate concentration : v = (Vmax [S]) ÷ (Km + [S])

v : reaction rate

[S] : substrate concentration

Vmax : maximum reaction rate

Km : Michaelis constant

To calculate the substrate concentration at Km, we can rearrange the Michaelis-Menten equation as follows: Km = {[S] * Vmax} ÷ {(v - [S])}

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ANSWER:

0.732 m^3/s

STEP-BY-STEP EXPLANATION:

We must convert from ft^3/min to m^3/s.

To do this, we must take into account the following conversion factors:

1 meter is equal to 3.28 feet

1 minute is equal to 60 seconds

Knowing this, we do the conversion just like this:

The fans airflow in m^3/s is 0.732

The current through the inductor is 0.0764 A.  To calculate the current through the 5-H inductor, use the following steps:

Step 1: Calculate the peak voltage.The peak voltage is the highest voltage of the waveform. In this case, the peak voltage is 120 volts.

Step 2: Calculate the angular frequency. The angular frequency is calculated using the formula,ω = 2πf

where f is the frequency of the waveform.

In this case, f = 50 Hz.ω

= 2π × 50

= 314.16 rad/s

Step 3: Calculate the reactance of the inductor. The reactance of the inductor is given by the formula,

XL = ωL where L is the inductance of the inductor.

In this case, L = 5 H.XL

= ωL

= 314.16 × 5

= 1570.8 Ω

Step 4: Calculate the current. The current through the inductor is given by the formula,

I = V/XL where V is the voltage across the inductor.

I = V/XL

= 120/1570.8

= 0.0764 A

Therefore, the current through the inductor is 0.0764 A.

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Answer:

Explanation:

F = -kΔx

Since the spring constant is given in N/m, we need to convert the stretch to meters as well.

12 cm = .12 m

Now we can solve the problem:]

F = -55(-.12) so

F = 6.6N

The force required to stretch the spring is 6.6 N

The force acting on a spring is given by:

Force (F) = spring constant (K) × Extention (e)

F = Ke

With the above formula, we can obtain the force required to stretch the spring as follow:

F = Ke

F = 55 × 0.12

F = 6.6 N

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Answer:

48cm by the minus of difference of 32 CM length 20 CM because of the length of the building

Answer:

The plane's speed is approximately 900 km/h or 559 mph.

Explanation:

The plane travels a distance of 325 miles if the airplane travels for 2.5 hours at an average speed of 130 miles per hour. Using the distance formula (d = rt), we can calculate the distance.

To find the distance traveled by the airplane, we can use the distance formula, which is represented as d = rt. In this formula, "d" represents the distance, "r" represents the rate or speed at which the object is traveling, and "t" represents the time taken for the travel.

Given that the airplane travels for 2.5 hours at an average rate of 130 miles per hour, we can substitute these values into the formula. The rate of the airplane is 130 miles per hour, and the time taken is 2.5 hours.

Using the formula, we can calculate the distance traveled as follows:

d = rt

d = 130 mph × 2.5 hours

Multiplying the rate (130 mph) by the time (2.5 hours) gives us:

d = 325 miles

Therefore, the airplane travels a distance of 325 miles during the 2.5 hours of travel at an average rate of 130 miles per hour.

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Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

Answer: c) The line shows a change in speed if its angle changes.

I'm not sure

Explanation:

Depending on their material, temperature, and other characteristics, objects in our environment emit, reflect, and absorb electromagnetic radiation in different ways, producing a wide variety of spectral fingerprints.

We are surrounded by electromagnetic radiation from both natural sources like the sun and man-made devices like cell phones and microwaves. Based on its composition and physical characteristics, every item reacts to this radiation differently. Some materials, such as metals, are great EM radiation conductors and reflect the majority of them, giving them a bright look. Some things, such things with dark surfaces or things made of carbon, absorb most of the radiation and seem black. Radiation may flow through transparent materials like glass and water because they transfer the radiation. Objects can also generate electromagnetic radiation (EM radiation), either naturally, like heat from our bodies, or artificially, like light bulbs. It's crucial to understand how objects interact with EM radiation in a variety of disciplines, including astronomy, engineering, and medicine.

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The dryness fraction is 0.96. Using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively. The value of q is found to be 1438.3 kJ/kg.

a) 0.2, b) 2687 kJ/kg, c) 0.16 kJ/kg.K, d) 32%, e) 2549.52 kJ/kgPart (a): The steam is superheated at 300°C and 3 MPa, using steam tables it can be seen that the dryness fraction is 0.96.Part (b): This can be calculated using the formula shown below. The net work done by the turbine is given as follows: Net work = m (h1 - h2) + m (h3 - h4) Where m is the mass of the steam entering the turbine and h1, h2, h3, and h4 are the enthalpies at the different points in the cycle.h1 is given as 3478 kJ/kg, and using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively.

Substituting the values in the formula gives the answer as 2687 kJ/kg.Part (c): Heat transfer per unit mass of steam to the boiler can be calculated using the formula shown below:q = h1 - h4 The value of q is found to be 1438.3 kJ/kg. Part (d): The thermal efficiency of the cycle can be calculated using the formula shown below: Efficiency = Net work output/ Heat inputHeat input can be calculated as follows: Heat input = m (h1 - h4) + m (h3 - h2) The value of heat input is calculated to be 4485.4 kJ/kg Substituting the values in the formula gives the answer as 32%.Part (e): The heat transfer to cooling water passing through the condenser is given as follows:q = m (h4 - h5)Where h4 is 1039.2 kJ/kg and h5 is 48.72 kJ/kg. The value of q is calculated to be 2549.52 kJ/kg.

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Answer: \(0.708\ mA\)

Explanation:

Given

\(E_o=20\ V/m\)

\(\omega =10^7\ s^{-1}\)

Cross-sectional area \(A=0.40\ m^2\)

Current density is given by

\(J=\epsilon_o \dfrac{dE}{dt}\)

Displacement current

\(\Rightarrow I=JA\\\Rightarrow I=8.854\times 10^{-12}\times 20\times 10^7\times 0.4\\\Rightarrow I=0.708\times 10^{-3}\ A\)

The required value of the maximum displacement current of the given space is  \(7.08 \times 10^{-4} \;\rm A\).

Given data:

The intensity of electric field is, \(E_{0}=20 \;\rm V/m\).

The angular frequency of electric field is, \(\omega=1.0 \times 10^{7} \;\rm s^{-1}\).

The cross-sectional area of space is, \(A =0.40 \;\rm m^{2}\).

In the given problem, the instantaneous electric field is given by \(E = E_{0} \times cos(\omega t)\)

So, the expression for the current density is,

\(J= \epsilon_{0} \times \dfrac{dE}{dt}\)

Here, \(\epsilon_{0}\)  is the permittivity of free space. Solving as,

\(J= \epsilon_{0} \times \dfrac{d(E_{0} \times cos(\omega t))}{dt}\\\\J= -\epsilon_{0} \times E_{0} \times \omega \times sin(\omega t)\)

And the expression for the maximum displacement current is,

\(I = J \times A\)

And the maximum displacement current is possible only when, J is positive and J will be positive for  \(sin(\omega t)=-1\).

Then solving as,

\(I = (-\epsilon_{0} \times E_{0} \times \omega \times sin(\omega t)) \times A\\\\I = (-8.85 \times 10^{-12} \times 20 \times (1.0 \times 10^{7}) \times (-1)) \times 0.40\\\\I = 7.08 \times 10^{-4} \;\rm A\)

Thus, we can conclude that the required value of the maximum displacement current of the given space is  \(7.08 \times 10^{-4} \;\rm A\).

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The reason the object seems red is that it absorbs all other colours and only reflects red waves.

Reflected light is what gives coloured objects their distinctive appearance. Violet, red, and orange wavelengths are absorbed when sunlight is shone on a green leaf. Green wavelengths are seen in the reflections. In each instance, we are observing the colours that contrast with the ones being absorbed.

Red is reflected when white light strikes a red object because all other hues that make up white light are absorbed. The item appears red because of this. A filter is a translucent substance that lets some colours flow through while absorbing others.

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Answer: is C

Explanation: i hope it helps :)

Answer:b) 30km/h

Explanation: I just had this answer on a test got it right!!thit

The magnitude of a vector does not change if each of its components is doubled. Therefore, the answer is, "stay the same". This is due to the Pythagorean Theorem, which states that the magnitude of a vector is determined by the square root of the sum of the squares of its components.

Because the square of a number is greater than the number itself, squaring each component and then taking the square root of the sum results in the same magnitude as before.

Let's suppose that the vector is defined as follows: a = (a₁, a₂, a₃)

The magnitude of this vector is given by the following formula:|a| = √(a₁² + a₂² + a₃²)

Now suppose that each component is doubled. Then the new vector b is defined as follows: b = (2a₁, 2a₂, 2a₃)

The magnitude of this vector is given by the following formula: |b| = √(4a₁² + 4a₂² + 4a₃²)

Notice that each term under the square root has been multiplied by 4. However, this is balanced out by the fact that we are taking the square root of the sum. Thus, we can factor out the 4 and simplify as follows:|b| = 2√(a₁² + a₂² + a₃²)

This expression is twice the magnitude of the original vector a.

Therefore, we conclude that doubling each component of a vector doubles its magnitude. Therefore, the answer is, "stay the same".

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Given:

• Length of beam = 7 m

• Mass of beam = 50 kg

• Mass of person = 60 kg

• Distance of the person from the left = 3.6 m

Let's find the tensions, T1 and T2.

First make a free body sketch:

Here, the net torque = 0.

To find the tension, T1, we have:

Where:

l = 7 m

mp = 60 kg

g is acceleration due to gravity = 9.8 m/s²

l1 = 3.6 m

mb = 50 kg

Thus, we have:

Therefore, the tension T1 = 530.6 N.

To find the tension T2, we have:

Thererfore the tension T2 = 547.5 N

• ANSWER:

T1 = 530.6 N

T2 = 547.4 N