what happens to h when path 2 is followed rather than path 1

Hence, the value of Tfinal will be =18.01786 C

The temperature of the final mixture can be calculated using the law of conservation of energy, which states that the total energy of a system remains constant.

The change in energy of the water is equal to the heat absorbed by the water from the silver pellet.

Q = mcΔT

where Q is the heat absorbed,

m is the mass of the water,

c is the specific heat capacity of water,

and ΔT is the change in temperature.

The heat absorbed by the water can be calculated as follows:

Q = mcΔT = 270 g * 4.18 J/g°C * (Tfinal - 18°C) = mcΔT

The heat absorbed by the water can be calculated as follows:

Q = mcΔT = 1.2 g * 0.24 J/g°C * (88°C - Tfinal) = mcΔT

Solving for Tfinal, we get:

Tfinal = 18°C + (Q / mc)

= 18°C + [1.2 g * 0.24 J/g°C * (88°C - Tfinal)] / [270 g * 4.18 J/g°C]

=18 + [1.2*0.24*(88-18)]/[270*4.18]

=18+(20.16/1128.6)

=18+0.01786

=18.01786 C

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The increase in the strength of the magnetic field will make the magnetic filed lines more closer to each other at the magnetic poles.

The magnetic field lines show how powerful the magnet is. This magnetic field will have a wider region of coverage for a powerful magnet. The magnetic field lines appear to all diverge or converge at the poles, as shown in the illustration above. This indicates that the region where a magnet's external magnetic field is highest.

The magnetic south pole is the point at which all magnetic field lines converge for all magnets, while the magnetic north pole is the point at which all magnetic field lines diverge.

The magnet's north pole is where magnetic lines of force begin, and its south pole is where they terminate. At the poles, magnetic field lines are closest to one another, and the distance at which they are separated from the magnet changes.

Magnetic force lines never cross one another. But they come closer when the field strength is increased.

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The angular speed required so that the angular acceleration is equal to the free fall acceleration on earth is 0.047 rad/s².

The centripetal acceleration of a  is given by,

a = w²r

r is the radius,

r = D/2

a = w²D/2

D is the diameter of cylinder.

Also,

The free-fall acceleration has to be equal to the angular acceleration,

g = angular acceleration

a = g

w²D/2 = g

w = √(2g/D)

Putting values,

w = √(2x9.8/D)

D = 5.38 miles.

1 mile = 1609m

5 miles = 8931.4 m

So, we get,

w = √(2x9.8/8931.4)

w = 0.047 rad/s²

So, the angular speed that is required is 0.047 rad/s².

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A special (speci) observation would be made if the ceiling decreased from 1,000 ft to 900 ft agl.

The global standard code for hourly and unique surface weather measurements is SPECI.

A SPECI message is the same as a METAR but is broadcast only when necessary. It is a unique observation message that draws attention to any noteworthy change that has occurred since the last METAR or SPECI was published.

Aeronautical decision making is a systematic approach to the mental process used by aircraft pilots to consistently to determine the best course of action in response to a given set of circumstances.

Inflight briefing should be requested in those cases where an update to a previous briefing needs to be obtained over an aircraft's radio.

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The magnitude of the vector of an acceleration vector has components of 17 m/s2 eastward and 23.5 m/s2 southward is 29.0 m/s².

Acceleration is the measure of how quickly an object's velocity changes with relation to time. Accelerations are vector quantities since they have both a magnitude and a direction. The direction of an object's acceleration is determined by the direction of the net force acting on it. Newton's Second Law states that the combined effect of two factors determines how much an item accelerates:

The size of the net balance of all external forces acting on the object is, in accordance with the materials used

to create it, inversely proportional to its mass, And the magnitude of resulting force is directly proportional to net force.

From the given data,

A1 = 17 m/s²

A2 = 23.5 m/s²

magnitude = |A|

To calculate the magnitude of the vector,

|A|² =(A1)² + (A2)²

|A|² = (17 m/s²)² + (23.5 m/s²)²

|A|²= 841.25 m/s²

|A| = 29.0 m/s²

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acceleration depends on the change in velocity

Acceleration is a vector quantity because it is affected by changes in velocity. This indicates that acceleration has a magnitude as well as a direction. Meters per second squared, or m/s2, are the conventional units of acceleration. These units are derived from velocity units, meters per second, and time units, seconds.

Without zero velocity, a bode can have acceleration. For example, when an object is hurled upwards, the velocity at the body is zero at that point, yet it experiences acceleration owing to gravity. It is feasible that when an item is hurled upward, its velocity is zero at the highest point and it has a finite acceleration owing to gravity.

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If a positive test charge is placed in an electric field,  direction of the force is in positive direction.

A positive test charge will experience force in the positive direction of an axis if it is placed in an electric field.

Each point in space has an electric property known as an electric field when charge of any kind is present.

Electric field E can be defined as. [tex]E=\frac{F}{q}[/tex] or, [tex]E=K\frac{Qq}{r^2}[/tex]. This is the electric field that charge Q is exposed to as a result of charge q. This formula for the electric field intensity is based on Coulomb's law.

An electric field can be found using a test charge, which is a little positive charge.

The test charge is kept generally positive because, as we all know, electrons, which are negatively charged, are the major charge carriers in current flow.

Force is the push or pull that an object experiences that causes it to alter its velocity. As a vector quantity with both magnitude and direction, force has both. The newton (sign N) is the SI unit of force.

Three types of forces are:-

Gravitational force, Electrical force and Magnetic forces.

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Enthalpy are given as a)334.99 kJ; b)5.46 moles; c)63.3 kJ/mol;

d)189.9 kJ/mol; e)The reaction that would have an enthalpy change of -2xAH is:

6 C →9 A + 3 B.

a) If you have 5.30 moles of A, the quantity of heat absorbed can be calculated as follows:

AH = 63.3 kJ/mol

moles of A = 5.30 moles

Heat absorbed = moles of A * AH

Heat absorbed = 5.30 moles * 63.3 kJ/mol = 334.99 kJ

b) If the reaction absorbs 345 kJ of heat, the quantity of moles of C produced can be calculated as follows:

Heat absorbed = 345 kJ

AH = 63.3 kJ/mol

Moles of C = Heat absorbed / AH

Moles of C = 345 kJ / 63.3 kJ/mol = 5.46 moles

c) For the reaction 2 C →3 A + B, the enthalpy change can be calculated using the equation:

AH = -AH(reversed reaction)

AH = -63.3 kJ/mol

AH = 63.3 kJ/mol

d) For the reaction 9 A + 3 B →6 C, the enthalpy change can be calculated as follows:

Enthalpy change for the reaction = 9 * AH(3 A + B 2 C) / 3 = 9 * 63.3 kJ/mol / 3 = 189.9 kJ/mol

e) The reaction that would have an enthalpy change of -2xAH is:

6 C →9 A + 3 B

Enthalpy change for the reaction = 9 * 63.3 kJ/mol / 6 = 189.9 kJ/mol * -2 = -379.8 kJ/mol.

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The electricity cost in the month is AED 43.

The speed at which electrical energy is carried over an electric circuit is known as electric power. The watt, or one joule per second, is the SI unit of power.

Voltage of the circuit is = 240 volt.

Resistance of the circuit is = 12 ohm.

The electric power of the circuit is  = V²/R = 240 × 240 /12 = 4800 W.

Total electrical energy is = 4800 × 30 Wh

= 144 kWh

Hence, total coast is = 144 × AED 0.30 = AED 43.

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The required distance when the relation between velocity and time is given  is calculated to be at t = 0, 2 sec.

As given in the problem, v = ds/dt

ds = v dt

Taking integral on both sides, we have,

∫ ds = ∫ v dt

Replacing v by t-2 in the above equation.

∫ ds = ∫ (t - 2) dt

S = t²/2 - 2t

The minimum distance is when S = 0, t²/2 - 2t  = 0

t( t/2 - 2) = 0

At t = 0, 2 sec, it is the minimum distance covered.

Thus, the required answer is t = 0, 2sec.

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If a car is moving at 60 mph, 361 RPM as fast the tire spinning if the diameter of the wheel is 80 cm.

To find the speed of the spinning tire, you need to convert the car speed from mph to a linear velocity (units of length per time), and then divide by the wheel's circumference.

First, convert the wheel diameter from cm to inches: 80 cm x 0.3937 inches/cm = 31.5 inches

Next, calculate the wheel's circumference: C = π x D = 3.14 x 31.5 inches = 99 inches

Now convert 60 mph to inches per minute: 60 mph x 5280 ft/mile x 12 inches/ft = 35,840 inches/minute

Finally, divide the linear velocity by the wheel's circumference to find the tire speed in RPM: 35,840 inches/minute / 99 inches = 361.64 RPM.

So the tire is spinning at approximately 361 RPM.

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If a car is moving at 60 mph, how fast is the tire spinning if the diameter of the wheel is 80 cm?

Answer: 0.914 km/hour or 914 meters/hour

Explanation:

To calculate Joanne's speed, we need to divide the distance she traveled by the time it took her to travel that distance. In this case, she walked a total distance of 0.4 km south + 0.5 km north + 0.7 km = 1.6 km. To find her speed, we divide the distance traveled by the time it took:

Speed = 1.6 km / 1.75 hours

= 0.914 km/hour or 914 meters/hour

Velocity, on the other hand, is a vector quantity that describes an object's speed and direction. In this case, Joanne walked 0.4 km south and then 0.5 km north and then 0.7km to forever 21 so her direction is not constant. Therefore, her velocity would be zero, because her displacement is zero.

The momentum of the male African elephant is 47222.22 kg-m, and a filed mouse has to travel at the speed of 940681.7176 m /s, to have the same momentum.

The mass of the elephant, M1 = 6800 kg

The velocity of the elephant, v1 = 25 km/h or 25×5/18 = 6.94 m/s

The mass of the field mouse, M3 = 50.2 gm or 0.0502 kg

Let the speed of the mouse to have the same momentum is v2.

Momentum of the elephant = 6800 × 6.944 = 47222.22 kg-m

Momentum of elephant = momentum of mouse

6800 × 6.94 = 0.0502 × v2

v2 = (6800×6.94)/0.0502

v2 = 940681.7176 m/s

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It will take 13.33 s for the stuntman's car to reach 200 m. The car will land in 4.48 s and the car will land 178.72 m from the cliff horizontally.

a. To find the time it takes the car to go 200 m, we need to find the final velocity of the car, which can be calculated using the formula vf = vi + at, where vi is the initial velocity, a is the acceleration, and t is the time.

Since the car is slowing down, the acceleration is negative, so we can use the formula:

t = (vf - vi) / a = (0 - 40) / -3 = 13.33 s

b. To find the time it takes the car to land, we need to find the time it takes for the car to fall the 120 m height. This can be found using the formula:

t = √(2d / g), where d is the distance fallen and g is the acceleration due to gravity (9.8 m/s²).

t = √(2 x 120 / 9.8) = 4.48 s

c. To find the horizontal distance the car lands from the cliff, we need to find the horizontal distance the car travels during the time it falls. This can be found using the formula:

d = vi x t = 40 x 4.48 = 178.72 m.

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Answer:

Drop down 1,2, & 3 all are Equal

Explanation:

- Both carts have the same initial gravitational potential energy, as they are released from the same height on tracks of equal height.

- Both carts will reach the bottom of the track in the same time, as they are both subject to the same gravitational force and start at the same height.

- Both carts will have the same final speed, as they are both subject to the same gravitational force and experience the same amount of friction over the same distance.

Where y=48ft, the first equation to be used is y=v0sin60ot - 16t2. You should use the second equation, x=v0cos60ot, where x=80ft.

Therefore, 80=v0t/2 and t=160/v0. In order to obtain t2= (160/v0)2, enter these expressions into the equations.To find v0, solve for 48=v0(.867)160/v0 -16(160/v0)2. As a result, v0 becomes =67.25ft/s. So t=160/v0 =160/67.25=2.38s. To determine the velocity, v, locate vy and vx. In other words, vy = v0y -gt, and vy= 67.25(.867) - 32(2.38), yielding vy = -18.397ft/s, vx = v0(1/2), which equals 33.625ft/s, and v=(vx2 + vy2)1/2, which equals 75.187ft/s. The velocity vector's angle with the target is now tan-1(18.397/33.625) and equal to 28.68° below horizontal.At a 60° angle above the horizontal, a pumpkin is thrown from the ground. At a distance of 80 feet and an altitude of 48 feet above the earth, the pumpkin lands in the center of a sizable target. (g = 32 ft/s2)

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The nail is only temporarily charged positively/negatively since its initial state was neutral, but itcan only have one type of charge at a time.

Negatively charged things and neutral objects pull toward one another, as do positively charged objects and neutral objects. Physics instructors frequently illustrate this third interaction between charged and neutral objects, and students often have the opportunity to participate in such activities in the lab. While charging through conduction, both objects acquire the same kind of charge. When a neutral object is charged with a negative charge, both charged objects become negatively charged. A body is considered to have a negative charge if it contains more electrons than protons. A body, on the other hand, is considered to have a positive charge if it has more protons than electrons.

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The electric field formed by a charged sphere at a distance R/2 from the center is proportional to the charge on the sphere and inversely proportional to the square of the radius of the sphere.

As a result, at R/2 distance from the center, the electric field produced by sphere #1 (of radius R/2) will be bigger than the electric field produced by sphere #2 (of radius R), which will be greater than the electric field produced by sphere #3. (of radius 2R). As a result, the correct answer is: b. 3; 2; 1 The electric field formed by a charged sphere at a distance R from the center is proportional to the charge on the sphere and inversely proportional to the square of the radius of the sphere. As a result, at distance R from the center, the electric field produced by sphere #3 (of radius 2R) will be smaller than that produced by sphere #2 (of radius R), which will be less than that produced by sphere #1 (of radius R/2). As a result, the correct answer is: a. 1; 2; 3 The electric field formed by a charged sphere at a distance of 2R from the center is proportional to the charge on the sphere and inversely proportional to the square of the radius of the sphere. As a result, at a distance of 2R from the center, the electric field formed by sphere #3 (of radius 2R) will be less than the electric field created by sphere #2 (of radius R), which will be less than the electric field created by sphere #1 (of radius R). greater than the electric field produced by sphere #1 (of radius R/2). As a result, the correct answer is: a. 1; 2; 3.

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The pressure developed in the system is 180 Kn/m² and force that will be exerted by each output piston is 2.25 KN.

A physical force applied to an object is referred to as pressure. The force applied is perpendicular to the surface of the objects per unit area. F/A is the fundamental formula for pressure (Force per unit area). Pascals are a unit of pressure (Pa). Absolute, atmospheric, differential, and gauge pressures are different types of pressure. Have you ever noticed that when using a straw to drink something, you actually suck the air out of the straw? While taking a drink, you are actually exerting "Pressure."

a) Actual force applied F' = 50 x 9 = 450 N

so,

Pressure

= 450 / (25 x 10⁻⁴)

= 180000 N/m²

= 180 Kn/m²

b) force at each output = 180 x 250 x 10⁻⁴/2 =2.25 KN

Thus, The pressure developed in the system is 180 Kn/m² and force that will be exerted by each output piston is 2.25 KN.

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The answer is 5280 / (9)(60) ft/sec. An intermediate runner should be able to finish a 1 km run in 7-8 minutes. For more seasoned runners, finishing 1 km in 6 minutes or less is a decent speed per kilometre.

Comparisons of Pace and Distance less than 4:21 minutes per kilometre (7 minute mile). If your goal is to complete a marathon in five hours or less, you should pace your run at an average of about 11:26 minutes per mile or 7:06 minutes per kilometer. The pace for a 9-minute mile is 5.35 minutes per kilometer, or around 6.7 miles per hour or 10.7 kilometers per hour; it should feel like a quick jog.

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According to his second law, a force is defined as the change in momentum (mass times velocity) per change in time.Force is equal to 0.15 x 9.8 x 1.47 Newton.

According to his second law, a force is defined as the change in momentum (mass times velocity) per change in time.

The mass m of an object times its velocity V is how momentum is calculated.

One of the most crucial principles of physics is Newton's second law.

For a body whose mass m is fixed, the equation F = ma can be used, where F (for force) and a (for acceleration) are both vector values.

A body is accelerated according to the equation if it is subject to a net force.

The only force acting on the ball will be gravity because we are ignoring air resistance.

Newton's second rule states that F = ma, where m is the ball's mass (0.15 kg) and an is the acceleration due to gravity (9.8 m/sec2).

To obtain the force, substitute:Force is equal to 0.15 x 9.8 x 1.47 Newton.

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The smallest area that the window could be is 10200cm^2.

To find the area of a window, you need to measure its length and width, and then multiply them. The formula is:

Area = Length x Width.

We can see that the smallest area that the window could be would look at the lower values of the length and the width of the window so we would have;

Lower part of the length = 150 cm

Lower part of the width = 68 cm

Then the area would be now;

150 cm * 68 cm

= 10200cm^2

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Answer:  Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Around 9.588 g of bromine will be produced when 50.0 ml of 1.20 mol/L potassium bromide solution reacts with 50.0 ml of a 1.20 mol/L solution of acidified NaClO.

The reaction between potassium bromide (KBr) and sodium hypochlorite (NaClO) in the presence of acid is a redox reaction, which results in the formation of bromine (Br2) and sodium chloride (NaCl). The amount of bromine produced can be calculated using the stoichiometry of the reaction.

First, the number of moles of potassium bromide (KBr) can be calculated using the molarity and volume of the KBr solution:

Moles of KBr = Molarity x volume

= 1.20 mol/L x (50.0 ml / 1000 ml/L)

= 0.0600 mol

Since the reaction is 1:1 between KBr and NaClO, the same number of moles of bromine will be produced. The mass of bromine can be calculated using the moles and molar mass of bromine:

Mass of Br2 = Moles of Br2 x Molar mass of Br2

= 0.0600 mol x 159.80 g/mol

= 9.588 g

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The change in kinetic energy of the particle is determined by the change in potential energy of the particle which is acted on by a force.

What is force?
Force is a physical quantity that is a measurement of an interaction that occurs between two objects or systems. It is a vector quantity, meaning it has magnitude and direction. Force can cause an object to accelerate, decelerate, or remain at a constant speed. Examples of forces include gravitational force, electrostatic force, and electromagnetic force. Force is a key concept in classical mechanics, and is fundamental to understanding how objects interact in the physical world. Force is also used to describe energy, momentum, and torque. Understanding force can help us better understand how the physical world works.

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A thermometer that always reads three degrees off, is reliable but not valid.

Reliability of a measuring instrument refers to the consistency of the measurement. It always give the same reading for the same temperature, however it is not correct as it is reads three degrees off. So we can say it is reliable, we can use it by calibrating it.

On the other hand it is not valid, as it gives the incorrect value of the temperature by reading the three degrees off. It does not give the reading that is suppose to. So it is not valid, or we can say the reading of this thermometer is not valid. Hence the correct option is E.

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The normal stress is 518kpa and the shear stress is 518kpa.

Any object or body that experiences an external force that is perpendicular to the cross-sectional area undergoes stress in order to restore its original shape. The stress created in this way by a force acting perpendicularly on a particular area is known as normal stress.

The tension that is created in an item when a force applies parallel to its surface area is known as shear stress. The force F is acting parallel to the surface area ABCD, creating shear stress in the item, as shown in the drawing above.

F=11×cos45

F=7.77KN

V=11×sin45

V=7.77KN

Calculate the area at the section.

A=[tex]\frac{0.15\times0.075}{cos45}[/tex]

A=0.015

Normal stress=[tex]\frac{7.77}{0.015}[/tex]

=518kpa

Therefore, the normal stress at the section is 518 kpa

Shear stress =[tex]\frac{7.77}{0.0159}[/tex]

=518kpa

Therefore, the shear stress at the section is518 kpa.

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The following conversion factor is used to convert between millimeters and meters: footnote size rm "1 millimeter is one thousandth of a meter, or 0.001 m." 1/1000 of a meter is one millimeter, or 0.001 m.

It is typically applied to measure an object's length or to express the distance between two places.

The units of meter, centimetre, millimeter, and inch are used to measure the length of any object. Thousandth of a metre is what the word millimetre signifies. To further appreciate the idea, let's study more about this metric unit, the conversions, and work through a few examples.

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Answer:

a motorcyclist initially traveling at 70 m/s accelerates at a constant acceleration to a speed of 130 m/s in 10 seconds. how far did he travel?

Explanation:

a motorcyclist initially traveling at 70 m/s accelerates at a constant acceleration to a speed of 130 m/s in 10 seconds. how far did he travel?

The lowest possible frequency of the sound in Hz is 24.3 Hz.

The lowest possible frequency of the sound in Hz can be calculated using the principle of constructive and destructive interference of waves.

The condition for minimum intensity is when the path difference between the two waves is equal to half a wavelength. The path difference between the two waves is equal to the difference in distance between the source and the observer.

Let "f" be the frequency of the sound waves. Then, the wavelength "λ" can be calculated using the equation:

λ = v/f, where "v" is the speed of sound in air.

The path difference between the two waves is equal to 12 m - 5 m = 7 m.

So, half the wavelength is equal to λ/2 = 7 m.

Therefore, the lowest possible frequency can be calculated using the equation:

f = v/λ = v/2*(7 m) = v/14 m.

The speed of sound in air is approximately 340 m/s, so the lowest possible frequency is:

f = 340 m/s / 14 m = 24.3 Hz.

Hence, the lowest possible frequency of the sound in Hz is 24.3 Hz.

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