what is the minimum number of nodes in a binary tree with 3 levels?

2269 × 10-³ m can be written in scientific notation as follows: 2.269 × 10⁰.

Scientific notation is a method of writing, or of displaying real numbers as a decimal number between 1 and 10 followed by an integer power of 10.

It is an alternative format of such a decimal number immediately followed by E and an integer.

According to this question, 2269 × 10-³ metres is to be converted to scientific notation. We do this by shifting the decimal place backwards three times to obtain the following;

2.269 × 10⁰

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The correct answer is (b) a short bar magnet because the circular loop of current creates a magnetic field that looks similar to the field created by a bar magnet.

The magnetic field around a current-carrying, circular loop is similar to that of a bar magnet because the circular loop acts as a magnetic dipole, with a north and south pole, just like a bar magnet. The magnetic field lines around the circular loop are also circular, just like the field lines around a bar magnet.

    The other options, such as a current-carrying, rectangular loop or long straight wire, do not produce a magnetic field that is similar to a bar magnet. Additionally, the strength of the magnetic field is greatest at the center of the circular loop and decreases with distance. This is similar to the field of a bar magnet, where the field is strongest at the poles and diminishes with distance.

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Answer:

Usually, a solution can have several criteria and constraints. Even though all are important, some criteria are more important than others. The same holds true for constraints. But what do you do if it's impossible for a solution to cover every criterion while avoiding every constraint? In cases like this, you can use prioritization. Listing criteria and constraints based on priority shows the relative importance of each. You will need to prioritize the criteria and constraints for each sub-problem so that you can design a solution for each one individually. Prioritization can help you compare two different possible solutions. For example, the criterion that cars travel at 15 mph through the neighborhood might be a higher priority than the constraint that homeowners are only willing to spend $10,000 on this issue. If this is the case, you would want to generate solutions that also follow the priority in mind. All criteria are important, but engineers must sometimes make a trade-off, which is a compromise or change in one or more criteria or constraints so that they can be met at the same time. This is where prioritization comes in handy as it helps determine the trade-offs. A solution that is doing a better job of meeting one criterion may result in not completely meeting another criterion. Prioritization will help you choose which solution to go with.

Explanation:

I got this from quizlet :)

Answer:

f = 5000 N

Explanation:

Given that,

The weight of a car = 11000 N

Driving force on the car = 5000 N

We need to find the force opposing the motion of the car. The net force on th car is given by :

F-f = ma

As it moves with constant velocity, a = 0

i.e.

F - f = 0

F = f

f = 5000 N

Hence, the opposing force is 5000 N.

Answer:

B

Explanation:

The only force acting on the block is gravity, so the block has a constant, negative acceleration. This means the velocity of the block is decreasing at a constant rate, so the answer is B, D, or E. Velocity is the rate of change of displacement, and answer choice B is the only one that has a displacement graph that matches that idea.

Answer: Graph B here correctly describes the displacement and velocity of the object during the time the object is falling. Option B is correct.

It is given that the mass of an object is dropped from height 'h' above the ground and "up" direction is taken to be positive.

It is required to find the graph which describes the displacement and velocity of the object during the time the object is falling.

If any body falls freely towards the ground, then its acceleration is decreasing constantly with respect to time. That means velocity of an object will also be decreased as shown in graph B. Also we know that velocity is the rate of change of displacement.

As it is given in question that up direction is positive then it is also considered that downward be negative means decreasing.

Therefore, both the quantities are decreasing. So graph B correctly describes the displacement and velocity of the object during the time the object is falling.

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The speed of the wave of wavelength 0.21 m is 23.1 m/s. And the correct answer is 0A. 23.1 m/s.

The speed of a wave is calculated by multiplying the wavelength and the frequency of the wave.

To calculate the speed of the wave, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the speed of the wave is 23.1 m/s.

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Answer:

things move quickly through a liquid

Explanation:

Answer:

earlier when there is no pandemic ( corona virus ) then rarely people give time to fitness/ excercise routine. But now, because of pandemic many people give more enthusiasm in fitness . In India we are motivated to do yoga. In this case, our culture has been back u can say. Lot of people startted doing yoga . Because of fitness in this pandemic no one will feel isolated with this u will be healthy .

Explanation:

pls like it ️

trueee...................

Answer:

true

Explanation:

light is a form of energy which is radiation so true:)

Answer:

The nucleus is very small compared to the size of the atom.

The radius of the atom is about 100,000 times the radius of the nucleus

Answer:

13=c

14=a

other question=d

9) A vector describe as a quantity that has both magnitude and direction. 10) We use vectors to describe in physics in physical quantities, including displacement, velocity, acceleration, force, momentum, and torque.

The vector is typically represented by an arrow, with the length of the arrow representing the magnitude of the vector and the direction of the arrow representing the direction of the vector. In addition to the magnitude and direction, vectors also have a starting point and an end point. Vectors can be added together to obtain a resultant vector that represents the sum of the individual vectors. Vectors can also be subtracted, multiplied by a scalar, or divided by a scalar.

For example, displacement is a vector that describes the distance and direction between two points. Velocity is a vector that describes the speed and direction of motion and acceleration is a vector that describes the rate at which velocity changes. Force is a vector that describes the push or pull on an object and momentum is a vector that describes the motion of an object and its resistance to change. Torque is a vector that describes the rotational motion of an object. So therefore vectors are an important tool for physicists because they allow them to describe physical quantities in a way that is both concise and precise.

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The parallel component of the force is found by multiplying the force by the cosine of the angle, which is 120.0 N * cos(30.0°) = 104 N. The perpendicular component is found by multiplying the force by the sine of the angle, which is 120.0 N * sin(30.0°) = 60 N. Therefore, the answer is C. 104 N, 60 N.

To find the parallel and perpendicular components of the force with respect to the ground, we'll use trigonometry. Let F be the total force, θ be the angle, F_parallel be the parallel component, and F_perpendicular be the perpendicular component.

F_parallel = F × cos(θ) = 120 N × cos(30°) = 120 N × 0.866 = 104 N
F_perpendicular = F × sin(θ) = 120 N × sin(30°) = 120 N × 0.5 = 60 N

So, the parallel component is 104 N, and the perpendicular component is 60 N.

The correct answer is C. 104 N, 60 N.

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Answer:

Difference : Balloon framing go through from foundation to top floor while Platform do not

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

Explanation:

Differences : Balloon framing a form of building houses using a special kind of timber construction its studs start from the foundation and go to all the way to the last floor while in Platform framing the studs are interrupted by floor platforms ( i.e. they do not go through like in Balloon framing )

advantages and disadvantages

Balloon framing : It has less vertical shrinkage  ( disadvantage )

platform framing : It has more vertical shrinkage and fire stops ( advantage )

platform framing : It is easier and safer to use

Reason for platform framing :

Due to these advantages Platform framing has become a better choice

Little added fire stopping is required in platform framing because of double tap plate present which can act as as a fire stop

Steel beam/ glue laminated wood beam is preferred at foundation level because wood beam under the ground will most likely shrink over time

The centripetal component of the ball's acceleration is eighteen m/s².

Acceleration is the fee of alternate of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given through the orientation of the net pressure performing on that item.

Calculation:-

A. The centripetal acceleration of the ball is as follows

a = v²/r

  = (3.00)²/0.500 m

  = 18 m/s²

B. given that there may be no force performing at the ball within the tangential acceleration direction,

The tangential acceleration of the ball is zero.

C. the peak at which the ball is rotating is

tan θ = r/h

rg/v² = r/h

h = v²/g

= (three.00 m/s)²/9.eight

= 0.ninety two m  

Acceleration is the price at which velocity modifications with time, in terms of each velocity and course. A component or an object moving in a straight line is accelerated if it accelerates or slows down. motion on a circle is prolonged no matter the reality that the rate is steady due to the fact the path is continually converting.

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A. The expression for the centripetal acceleration of the ball is as follows:

ac = v2 / r

=(3.00 m/s) / 0.500 m

= 18 m/s2

C. The height at which the ball is rotating is as follows:

tan ∅ = r / h

rg / v2 = r/h

=h = v2 / g

=(3.00 m/s)2 / 9.8 m/s2

= 9.2m/s2

The charge of trade of position of an object in any course. Speed is measured by the ratio of distance to the time wherein the space changed into blanketed.

The equation for speed is easy: distance divided by time. You're taking the distance traveled (as an instance three meters), and divide it by the point (3 seconds) to get the speed (one meter in keeping with second)

In case you understand the gap an object travels in a positive quantity of time,  the rate of the object. As an example, if a automobile travels 70 miles in one hour, the car is visiting at a speed of 70 miles/hour (miles per hour).

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A powerful motorcycle can accelerate from rest to 26.8 m/s in only 3.90s.  It will go 52.3 m in that time.

According to the Question,

It is given that,

Initial velocity of motorcycle is zero and,

Final velocity is 26.8m/s and,

it's acceleration during a time of 3.90s

Now, The end position is equal to the initial position plus the average velocity times time, according to the formula for average velocity that we plug in here.

In other words, the distance travelled will be equal to 0 meters (the initial position), plus 0 meters per second (the initial velocity), plus 26.8 meters per second (the final velocity), divided by 2 times 3.90 seconds, or 52.3 meters.

Therefore,0+0+26.8/2x3.90=52.3m

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Answer:

B

Explanation:

If you dident pay for the no ad thing its okay all u have to do is answer one person's question every day befor you ask a question no ad's just answers you gotta do it every day tho

Answer:

Second option is correct.

The initial and the final velocity for the graph is

initial=2.5m/s; final=2.5m/s.

Explanation:

The graph plotted between velocity and time, is called velocity time graph.

Hence, second option is correct.

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The skater has the maximum potential energy at the top of the slope.

Capacity power is the power held with the aid of an object because of its position relative to other gadgets, stresses within itself, its electric charge, or different elements.

Ability strength, stored electricity that depends upon the relative function of numerous parts of a machine. Spring has more potential energy when it's far compressed or stretched.

Capacity electricity is power an item has due to its function relative to some different item. whilst you stand at the pinnacle of a stairwell you have got greater capability power than while you are at the lowest, due to the fact the earth can pull you down thru the pressure of gravity, doing paintings in the procedure.

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Answer:

When Momentum is conserved it is called conservation of momentum

Explanation:

When Momentum is conserved it is called ________ .

When Momentum is conserved it is called conservation of momentum.

Law of momentum conservation is a physical law that the momentum (total momentum) of a system is invariant unless an external force acts on the system (closed system).

An airplane is flying with a velocity of 42 m/s at a standard altitude of 3 km. At a point on the wing, the airflow velocity is 88 m/s. The  pressure at the point on the wing is  \(P = 6.96 * 10^4 N/m^2\).

To calculate the pressure at a point on the wing, we can use Bernoulli's equation, which relates the pressure, velocity, and density of a fluid in steady, incompressible flow.

The equation is as follows:

P + 1/2 * ρ * \(V^2\) = constant

where P is the pressure, ρ is the density of the fluid, and V is the velocity of the fluid.

Given:

\(P_1 = 7.01 * 10^4 N/m^2\) (pressure at standard altitude)

ρ = \(0.909 kg/m^3\) (density of the fluid)

\(V_1 = 42 m/s\) (velocity of the airplane)

\(V_2 = 88 m/s\) (velocity at the point on the wing)

To find the pressure at the point on the wing, we can use Bernoulli's equation for the standard altitude and the point on the wing, and then solve for P:

\(P_1 + 1/2\) * ρ * \(V_1^2\) = \(P + 1/2\)  * ρ * \(V_2^2\)

Substituting the given values:

\(7.01 * 10^4 + 1/2 * 0.909 * 42^2 = P + 1/2 * 0.909 * 88^2\)

Simplifying the equation:

\(7.01 × 10^4 + 1/2 * 0.909 * 1764 = P + 1/2 * 0.909 * 7744\)

7.01 × 10^4 + 804.906 = P + 3526.242

\(P + 4329.148 = 7.01 *10^4\)

\(P = 7.01 * 10^4 - 4329.148\)

\(P = 6.96 * 10^4 N/m^2\)

Therefore, the pressure at the point on the wing is \(P = 6.96 * 10^4 N/m^2\)

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The current that will pass through resistance R1 if U(BC) = 6V,is 3A when the resistances are as follows: R1=2 ohms, R2=6 ohms, R3=1 ohm, R4=1 ohm.

Given the voltage in the circuit (V) = 6V

The resistance of resistor R1 = 2ohms

The resistance of resistor R2 = 6ohms

The resistance of resistor R3 = 1ohms

The resistance of resistor R4 = 1ohms

As we can see from the diagram given that the resistors R1 and R4 are connected in parallel, which combinedly is connected in series with R2 and then total is connected in parallel with R3.

The current that will pass through resistance R1 can be determined by using Ohm's Law. This law states that the current (I) is equal to the voltage (V) divided by the resistance (R). In this case, the voltage across R1 is the same as the voltage across the circuit (U(BC)), which is 6V. Therefore, the current through R1 is:

I = 6V / 2 ohms = 3A

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We need to add approximately 0.34 kg of mass to the object to change the period of its simple harmonic oscillations from 1.35 s to 2.2 s.

To solve this problem, we need to use the formula for the period of a simple harmonic oscillator: T = 2π√(m/k), where T is the period, m is the mass, and k is the spring constant. We can rearrange this formula to solve for m: m = (T^2*k)/(4π^2).

Using the given values, we can calculate the mass of the object initially: m1 = (1.35^2*k)/(4π^2). We don't actually need to know the value of k, though, since we're only interested in the change in mass needed to change the period.

Let's call the additional mass we need to add "m2". Then, we can use the same formula with the new period of 2.2 s: m1 + m2 = (2.2^2*k)/(4π^2).

Now we can solve for m2: m2 = (2.2^2*k)/(4π^2) - m1. Plugging in the values we know, we get: m2 = (2.2^2*0.505)/(4π^2) - (1.35^2*0.505)/(4π^2) ≈ 0.34 kg.

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When A slider is moving to the right across unpacked snow and skidding to a stop, forces act upon the slider are: Normal force, Friction force, Gravity force.

An object's push or pull is seen as exerting a force. The interaction of the objects produces push and pull. You can also use words like stretch and squeeze to describe force.

The definition of force in physics is: the push or pull on a mass-containing item changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

When a slider is moving to the right across unpacked snow and skidding to a stop gravitational force due to his weight, normal reaction force and frictional resistance force will act upon the slider.

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(a) There are 22 packs in the power supply.

(b) (i) Each cell is transferring energy at a rate of 4.2 Watts.

(ii) Thick wires are necessary to carry the large current because they have lower resistance compared to thin wires.

(a) To calculate the number of packs in the power supply, we divide the total e.m.f. of the power supply by the e.m.f. of each pack:

The number of packs = Total e.m.f. / e.m.f. of each pack

Total e.m.f. = 990 cells * 1.2 V = 1188 V

Number of packs = 1188 V / 54 V = 22 packs

Therefore, there are 22 packs in the power supply.

(b) (i) To calculate the rate at which each cell is transferring chemical energy to electrical energy, we multiply the current (I) by the e.m.f. of each cell:

Rate of energy transfer = Current * e.m.f. of each cell

Rate of energy transfer = 3.5 A * 1.2 V = 4.2 W

Therefore, each cell is transferring energy at a rate of 4.2 Watts.

(ii) Thick wires are necessary to carry the large current because they have lower resistance compared to thin wires. When a large current flows through a wire, there is a greater amount of electrical energy being transferred, which generates heat due to the resistance of the wire. If the wire has high resistance, it can lead to significant heat dissipation, potentially causing overheating and inefficiencies in the power supply system.

Using thick wires with lower resistance helps to minimize the amount of heat generated and prevents excessive power losses. Thick wires have a larger cross-sectional area, allowing for better current-carrying capacity and reducing resistance. This ensures that the electrical energy is efficiently transmitted to the electric vehicle without excessive power dissipation or voltage drops, thus optimizing the overall performance of the system.

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Answer:

B.

Goals are scored by kicking the ball through goalposts.

Explanation:

In anthropological terms, _Kinship_____ is the means by which a person determines their kin relations over the course of past and future generations.

Kinship is the term which anthropologists define kin relations over generations.

Kinship includes blood, marriage, and other social links. It includes people's intricate family links and determines their social status.

Kinship systems help anthropologists analyse family structures, inheritance patterns, marital practises, and societal roles. Genealogies, oral histories, and cultural practises reveal kinship.

Understanding kinship is crucial in anthropological research as it provides insights into social organization, cultural norms, and the transmission of resources, rights, and obligations within a given society. It helps anthropologists understand how people define and navigate family ties, both past and future.

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Answer:

The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

The gravitational force is given by Newton's Law:

We know that in a lagrangian point the foreces cancel out, then in this case we have:

From which we can find the mass of star B:

Now, that we know the mass of star B we can calculate the force exerted on star A by star B:

plugging the values given we have:

Therefore, the force exerted on star A by star B is: