The curved movement of air or water is the result of which action?.

The initial acceleration of the rocket at the given thrust is 1.3 m/s².

The initial acceleration of the rocket is determined by Newton's second law of motion. This law states that the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

where;

The initial lunch force = 1015 kN = 1,015,000 N

The mass of the rocket = 780 tonnes = 780,000 kg

a = F/m

a = (1,015,000) / (780,000)

a = 1.3 m/s²

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The rate at which the heat transfer will be equivalent to the constant rate of 100KW for 60 seconds will be 300KW for a time of 20 seconds.

Power is the amount of energy which is transferred or converted per unit of time. The SI unit of power is the watt (W) which is equal to one joule of work done per second of time.

There is an equivalent amount of heat transfer. Therefore, the heat transfer are equal:

100kW × 60 sec = 6000 KJ

P × 20 sec = 6000 KJ

P = 6000/ 20

P = 300 KW

Therefore, the rate of heat transfer which would be required will be 300 KW for a time period of 20 seconds.

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Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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If you see a displayed diver-down flag while boating, it is necessary to maintain a certain distance from the flag for safety reasons. The specific distance may vary depending on local regulations and circumstances, but it is generally recommended to stay at least 100 feet away from the flag.

A diver-down flag is used to indicate the presence of divers in the water. Its purpose is to alert boaters to the potential hazards and to ensure the safety of the divers. The exact distance you must stay away from the flag may be specified by local laws or regulations, so it is important to familiarize yourself with the rules of the area you are boating in.

In many places, a common guideline is to stay at least 100 feet away from the diver-down flag. This distance allows for a safe buffer zone to prevent any accidental collisions or disturbances to the divers. However, it's crucial to check and adhere to the specific regulations in your boating location, as they may vary and could require a different distance to be maintained. Prioritizing safety and respecting the presence of divers is essential to avoid any accidents or harm to both boaters and divers.

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Answer:

Speed = 300 m/s

Explanation:

Given the following data;

Frequency = 30 Hz

Wavelength = 10 m

To find the speed of the wave;

Mathematically, the speed of a wave is given by the formula:

\( Speed = wavelength * frequency \)

Substituting into the formula, we have;

\( Speed = 10 * 30 \)

Speed = 300 m/s

According to Fourier's law, the area at right angles to the gradient through which heat flows is directly proportional to the negative gradient of temperature and the time rate of heat transfer.

Thus, The law of heat conduction sometimes goes by the name of Fourier's law.

A discrete and electrical analogue of Fourier's law is found in Newton's law of cooling and Ohm's law.

An experiment that demonstrated how the rate of heat transfer through a flat layer is proportional to the temperature gradient across the layer and heat transfer area was used to show how Fourier's law was derived.

Thus, According to Fourier's law, the area at right angles to the gradient through which heat flows is directly proportional to the negative gradient of temperature and the time rate of heat transfer.

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Answer:

1)  The block of wood is at rest.

2)  Weight and Normal Reaction (see attached diagram).

Explanation:

Assumptions

Question 1

"At rest" or "resting" means that the object isn't moving.

Therefore, the block of wood is at rest.

Question 2

Forces that are acting on the block of wood:

See attached diagram.

if the power factor is to be improved to 0.95 lagging. So the value of the capacitor (in farads) that needs to be connected in parallel with the motor is 50.9 μF

To calculate the required capacitance to improve the power factor of the motor, we need to use the formula:

         C = (Q × tan θ1 - Q × tan θ2) / (ω × V^2)

where:

C = capacitance in farads

Q = reactive power in volt-amperes reactive (VAR)

θ1 = initial power factor angle

θ2 = final power factor angle

ω = angular frequency of the AC current (2πf where f is the frequency in Hz)

V = voltage in volts

The data we get from the question is

Power (P) = 10 kW = 10,000 W

Voltage (V) = 220 V

Initial power factor (pf1) = 0.7 lagging

Final power factor (pf2) = 0.95 lagging

First, we need to calculate the initial reactive power (Q1) of the motor using the formula:

      Q1 = P × tan θ1

      Q1 = 10,000 × tan (cos^-1(pf1))

      Q1 = 6,020 VAR

Next, we need to calculate the final reactive power (Q2) of the motor using the formula:

        Q2 = P × tan θ2

        Q2 = 10,000 × tan (cos^-1(pf2))

       Q2 = 2,760 VAR

Now, we can calculate the required capacitance using the formula:

        C = (Q1 - Q2) / (ω × V^2 × (tan θ1 - tan θ2))

The angular frequency (ω) of the AC current can be calculated as:

      ω = 2π × 60 Hz (assuming a standard 60 Hz frequency)

Therefore, we have:

               C = (6,020 - 2,760) / (2π × 60 × 220^2 × (tan(cos^-1(0.7)) - tan(cos^-1(0.95))))

                C ≈ 50.9 μF

Therefore, the value of the capacitor that needs to be connected in parallel with the motor is approximately 50.9 μF.

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the value of the capacitor in farads required to improve the power factor of the motor from 0.7 to 0.95 lagging is 11.222 µF.

Power of the motor = 10 kW, Voltage = 220 V, Power factor (initial) = 0.7, Power factor (final) = 0.95, Lagging power factor (since cos Φ is given as 0.7 and 0.95 in the question, where Φ is the angle between the voltage and current). The required value of capacitance is to be found.

Let C be the capacitance required to be connected in parallel with the motor. Then the value of the capacitance can be calculated by The power factor is given by the ratio of true power to apparent power. Since the apparent power is V × I where V is the voltage and I is the current drawn by the motor, and true power is V × I × cosΦ, substituting these values in the formula of power factor yields. We can substitute the given values in the equation for the initial and final power factor values.

Hence, we get the initial current drawn and the final current drawn. We can then find the initial and final reactances using the power formula. Substituting the values in the above equation, we get the current drawn by the motor initially to be.

V × I × cosΦ= 220 × 10Kw × cos 0.95 = 11.222 µF

Therefore, the value of the capacitor in farads required to improve the power factor of the motor from 0.7 to 0.95 lagging is 11.222 µF.

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A star with a magnitude of 2 is dimmer than a star with a magnitude of 1. This is because the magnitude scale is a logarithmic scale in which each magnitude is about 2.5 times brighter or dimmer than the next magnitude.

As a result, a star with a magnitude of 2 is approximately 2.5 times dimmer than a star with a magnitude of 1. When we speak about a star's magnitude, we're referring to its brightness as seen from Earth. The magnitude scale is a logarithmic scale, which means that each magnitude is around 2.5 times brighter or dimmer than the next magnitude. A star with a magnitude of 1 is, therefore, 2.5 times brighter than a star with a magnitude of 2.In the magnitude scale, a difference of 1 magnitude corresponds to a difference of 2.512 in brightness. As a result, if one star has a magnitude of 2 and another has a magnitude of 1, the second star is 2.512 times brighter than the first. However, the scale is logarithmic, which means that the first star is 2.5 times dimmer than the second star, as I mentioned earlier.

In conclusion, a star with a magnitude of 2 is dimmer than a star with a magnitude of 1. This is due to the fact that the magnitude scale is a logarithmic scale in which each magnitude is roughly 2.5 times brighter or dimmer than the next magnitude. As a result, a star with a magnitude of 2 is approximately 2.5 times dimmer than a star with a magnitude of 1.

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Answer:

12.5 m/s

Explanation:

v=f×lamda( I don't have the symbol)

from the question, v=?, f=5.0 Hz, lamda=2.5m

thus, v=5.0×2.5

v=12.5m/s

Answer:

true

Explanation:

I just had a test on this

Answer:

true

Explanation:

cause it is

Answer:

D. Time t = 1 [s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f}=v_{o}-g*t\)

where:

Vf = final velocity = 0 (when the ball reaches the maximum height its elevation won't be increased since the velocity is zero)

vi = initial velocity = 10 [m/s]

g = gravity acceleration = 10 [m/s²]

t = time [s]

Now replacing:

\(0 = 10-10*t\\10 = 10*t\\t = 1 [s]\)

Norepinephrine, dopamine, serotonin, and GABA are neurotransmitters that are involved in psychopathology. This statement is correct.

Neurotransmitters are chemicals in the brain that send signals from one neuron to another, allowing them to communicate. When released by a neuron, neurotransmitters travel across a gap called a synapse to bind to receptor molecules on the adjacent neuron, thereby influencing its activity. A neurotransmitter is a chemical messenger in the nervous system that communicates information from one neuron to another across a synapse.

Psychopathology is the study of mental illness and abnormal behavior. Psychopathology is the branch of psychiatry that investigates mental and emotional disorders, including their causes, symptoms, and treatment.

The neurotransmitters Norepinephrine, dopamine, serotonin, and GABA are neurotransmitters that are involved in psychopathology. Some examples of psychopathology are anxiety disorders, bipolar disorder, depression, and schizophrenia. Dysfunction in these neurotransmitters may lead to an imbalance in the brain that may contribute to the development of mental illnesses.

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Answer:

the distance traveled by the sports car is 90 m

Explanation:

Given;

mass of the sports car, m = 500 kg

initial velocity of the sports car, u = 0

final velocity of the sport car, v = 30 m/s

time of motion of the car, t = 6 s

The distance traveled by the sports car is calculated as;

\(s = (\frac{u+v}{2} )t\\\\s = (\frac{0+30}{2} ) \times 6\\\\s = 15 \times 6\\\\s = 90 \ m\)

Therefore, the distance traveled by the sports car is 90 m

The correct answer is 3.5 × 103 N .

F = k|q1| |q2|r2

= (8.99 × 109 N·m2C2 )

(7.369 × 10−18 C)(7.369 × 10−18 C)

(1.18 × 10−14 m)2

= 3.5 × 103 N .

Coulomb's inverse-square law, sometimes known as Coulomb's law, is a physical experiment that calculates the amount of force between two stationary, electrically charged particles. The electric force between two charged things at rest is sometimes referred to as electrostatic force or Coulomb force. Although the rule existed prior to 1785, it was published for the first time by French physicist Charles-Augustin de Coulomb, hence the name. Coulomb's law was critical to the development of electromagnetic theory, perhaps even its beginning point, because it allowed for meaningful discussion of the quantity of electric charge.

According to the law, the magnitude of the electrostatic force of attraction or repulsion between two point charges is precisely proportional to the product of charge and charge magnitudes.

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While designing a circuit that has two resistors connected in series. Given that we have a 20 V battery that will produce a current of 0.2 A their equivalent resistance in series must be 100 Ohm.

Resistance is the obstruction of electrons in an electrically conducting material.

The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.

V=IR

For calculating equivalent resistance in series combination.

Re = R1  + R2

For the given problem we have to design and construct a circuit that has two resistors connected in series.

Given that we have a 20 V battery, that will produce a current of 0.2 A

By using Ohm's law.

V=IR

As voltage V is given 20.0 V and current I = 0.2 A

20=0.2R

R=100 Ohm

The equivalent resistance of the circuit should be 100 Ohm

For   equivalent resistance in series

Re = R1 +R2

100 =R1 + R2

Thus, the resistor can be in various combinations but the sum of their equivalent value must be 100

For example it can either be 50 Ohm, and 50 ohm or 60 ohm and 40 ohm

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Change in temperature is 367 . 13 ° C,increase in length of the strut is 0 . 00828 m and compressional stress developed in the strut is 8. 077 x 10⁸ Pa

a ) Q = CmΔT

ΔT =Q/cm = 2 5 0 x 1 0⁵ J/( 4 4 8 J / kq c ) (1 .52 kg )

= 367 . 13 ° C

( b ) ΔL = XL₀ΔT

= ( 1 1 x 10 - 6 0 c ) X ( 2 . 05 m ) ( 367.13 0 )

= 0 . 00828 m

C ) f = YΔL/L = ( 2 x 10 +"Pa) * 0.00828

2 .05

= 0.00807 7 X 10"

= 8. 077 x 10⁸ Pa

Any type of change that puts strain on the body, mind, or emotions is considered to be stressful. Your body will react with stress whenever something needs your focus or attention. To some extent, everyone is under stress. However, how you handle stress has a significant impact on how you feel overall. The degree of stress that may be experienced generally increases with temperature change. Thermal stress is the name for the stress that results when a temperature-based force is applied. It happens when a change in temperature causes an object to grow or shrink.

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Answer:

facts provided or learned about something or someone.

Open clusters, O and B stars, globular clusters and gas and dust lie in the halo of our galaxy, therefore the correct option is (E) all of the above

The halo of our galaxy contains a diverse array of objects, including open clusters, O and B stars, globular clusters, and gas and dust. Open clusters are groups of relatively young stars that formed from the same molecular cloud, while globular clusters are much older and contain hundreds of thousands of stars.

O and B stars are massive, hot stars that emit large amounts of ultraviolet radiation, which can ionize surrounding gas clouds. Gas and dust in the halo can form new stars or be illuminated by nearby stars, producing emission nebulae and other interesting structures.

Therefore, the correct option is (E) all of the above

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Answer:

The acceleration of proton is 5.56 x 10^10 m/s^2 .

Explanation:

initial velocity, u = 0

Electric field, E = 580 N/C

final speed, v = 10^6 m/s

(a) Let the acceleration is a.

According to the Newton's second law

F = m a = q E

where, q is the charge of proton and m is the mass.

\(a= \frac{q E}{m}\\\\a = \frac{1.6\times10^{-19}\times 580}{1.67\times 10^{-27}}\\\\a= 5.56\times 10^{10} m/s^2\)

Answer:

  875

Explanation:

The digits more significant than the last two integer digits are dropped from the pressure reading placed on the upper right of the station model. Generally, the dropped digits will be 9 or 10.

987.5 mb would be recorded as 875 on the model.

Answer:

all I know is C

are there more questions? anyone?

-KARL IS STOOPID

Explanation:

From other spectroscopic techniques and the compound's overall structure is often required to make a definitive identification of functional groups.

The absorption at 2250 cm^(-1) in the infrared (IR) spectrum typically indicates the presence of a functional group called a "C≡C" triple bond or a "C≡N" triple bond.

The stretching vibrations of the carbon-carbon triple bond (C≡C) or carbon-nitrogen triple bond (C≡N) occur in this region of the IR spectrum, resulting in the observed absorption at 2250 cm^(-1).

It's important to note that the interpretation of IR spectra is based on general trends and characteristic absorptions. Additional information from other spectroscopic techniques and the compound's overall structure is often required to make a definitive identification of functional groups.

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Answer:

12 m/s

Explanation:

If a person has hyperopia, their far point is larger than infinity and their near point is farther away than 25 cm. The correct option is d.

Hyperopia, also known as farsightedness, is a refractive error of the eye in which light entering the eye is focused behind the retina instead of directly on it, resulting in blurred vision of near objects. In hyperopia, the eye has an abnormal shape or the cornea is too flat, causing light to be focused incorrectly. As a result, a person with hyperopia has difficulty seeing close objects clearly, but can see distant objects more clearly.

The far point is the farthest point from the eye at which an object can be seen clearly without any strain or accommodation. In hyperopia, the far point is located beyond infinity, which means that light rays from distant objects are not focused on the retina, but are already converging when they enter the eye. Hence, option d is correct.

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This question involves the concepts of average velocity and displacement.

The average velocity of the car is "60 mi/hr (north)".

The average velocity of a car can be defined as the rate of change of displacement of the car:

\(Average\ Velocity=\frac{Displacement}{Time}\\\\ Average\ Velocity=\frac{240\ mi\ (North)}{4\ hr}\)

Average Velocity = 60 mil/hr (North)

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Answer:

Un excelente ejercicio para perder barriga rápidamente es correr, ya que el cuerpo gasta una mayor cantidad de calorías en un corto período de tiempo, en tan sólo 30 minutos corriendo se queman unas 300 calorías.

...

Qué ejercicios realizar

Correr. ...

Clase aeróbica. ...

Saltar cuerda. ...

Bicicleta. ...

Caminar rápido. ...

Natación.

Explanation:

dame coronita por favor

In the given scenario, different types of heat transfer are occurring.

Radiation: Chris getting sunburned during the day is an example of heat transfer through radiation. The sun emits electromagnetic waves, including infrared radiation, which can directly heat the skin and cause sunburn.

Convection: When Chris walks by the fire started by his father, he feels the heat. This heat transfer is due to convection. The fire heats the air surrounding it, causing the hot air to rise and create convection currents. As Chris walks through the rising hot air, he feels the heat being transferred to his body.

Conduction: When Chris accidentally touches a hot pan while his mother is cooking breakfast, he gets burned. This is an example of heat transfer through conduction. The hot pan transfers its heat directly to Chris's hand upon contact. Heat travels from the higher temperature object (the pan) to the lower temperature object (Chris's hand) through direct molecular collisions.It is important to note that all three types of heat transfer can occur simultaneously in various situations. In this scenario, radiation from the sun causes sunburn, convection from the fire creates heat in the air, and conduction from the hot pan leads to a burn on Chris's hand. Despite the minor incidents, Chris still had a fun camping trip.

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the net impulse that acted on the ball =500 N.s if 100 kg ball is initially traveling at 10 m/s. If the ball experiences a constant external force that increases the ba velocity to 15 m/s .

The normal force acts in a direction normal to the surface interaction between objects. Friction is a force that opposes motion on surfaces. Other examples of non-fundamental forces include the elastic force, tension, and frame-dependent forces .

to make someone do something that they do not want to do, for example by using or threatening to use violence. force someone to do something: He claims that police officers forced him to sign a confession.

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