With 1 scoop of flour, Olivia can bake 15 biscuits if the the equation that shows the relation between number of biscuits and amount of flour is c = 15f.
c = 15 f
c = Number of biscuits
f = Number of scoops of flour
f = 1
c = 15 * 1
c = 15
This equation shows that number of biscuits that can be made is 15 times the number of scoops of flour. So if the number of scoops of flour is 1, the number of biscuits that can be made is 15.
Therefore, with 1 scoop of flour, Olivia can bake 15 biscuits
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A llama runs until reaching its top speed. A graph of the llama's velocity over time is shown
below.
What is the llama's average acceleration from 15 to 20 seconds?
The average acceleration for that time interval will be zero because the velocity is constant.
What is acceleration?If an object's velocity changes, it is said to have been accelerated. An object's velocity can alter depending on whether it moves faster or slower or in a different direction. A falling apple, the moon orbiting the earth, and a car stopped at a stop sign are a few instances of acceleration. Through these illustrations, we can see that acceleration happens whenever a moving object changes its direction or speed, or both.
What is velocity?Velocity and speed describe how quickly or slowly an object is moving. We frequently encounter circumstances when we must determine which of two or more moving objects is going faster. If the two are travelling on the same route in the same direction, it is simple to determine which is quicker. It is challenging to identify who is moving the fastest when their motion is in the other direction. The concept of velocity is useful in these circumstances. Learn about the definition of velocity in this article as well as the distinction between speed and velocity.
the velocity is constant at -20 m/s. Hence the average acceleration for that time interval will be zero because the velocity is constant.
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Answer:
0
Explanation:
i did it on khan academy
in the video, forces acting on the car that are parallel to the direction of motion are analyzed. how are these forces related?in the video, forces acting on the car that are parallel to the direction of motion are analyzed. how are these forces related?
The forces have a same magnitude, act in opposing directions, and result in a net force of zero. The forces produce a net force in the direction of motion that is in the same direction, but they are not equal in size.
All forces operating on an automobile travelling uniformly at a steady speed are balanced. In this instance, the two opposing forces air resistance and friction perfectly balance the force that the wheels are exerting on the ground. However, the instant your foot leaves the gas pedal, there is no longer an applied force, and the forces are out of balance: Now when the car is out of balance, the forces pushing backward on it cause it to slow down; this is known as negative acceleration.
Because there wasn't enough upward force (i.e., regular force from the chair) to balance the extra mass, you would speed downward as a result of the unbalanced force, possibly breaking your tailbone as you plunged through the chair to the floor.
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Can someone help me pls, i also have 3 more questions like this :D
The water molecules in the gas phase have more kinetic energy than in the liquid phase. The molecules in the liquid phase must absorb energy from the surroundings to enter the gas phase.
What is a hot spring?A hot spring can be defined as a natural or an artificially-induced phenomena in which very hot groundwater flows out from the Earth's crust due to the heat energy that is present in the geosphere.
What is a phase change?A phase change simply refers to the change in the state (phase) of matter of a given chemical compound or substance in the following ways:
Gas to solidSolid to liquidLiquid to gasLiquid to solidGenerally speaking, the water molecules in the gas phase typically possesses more kinetic energy than in the liquid phase and as such, it would have to absorb more energy from the surroundings in order to enter the gas phase.
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When you prepare a kettle of stew over a camp fire, the stew is warmed in a variety of ways. Explain the combination of processes.
The combination of processes through which the stew is being warmed include conduction, convection and radiation.
What is heat transfer?Heat transfer is defined as the phenomenon whereby heat generated in a medium is being transferred to another location by phase changes.
The transfer of heat occurs in the following combination processes such as:
Thermal Conduction: the transfer of heat through direct contact of the pot of stew with the camp fire.Thermal Convection: the transfer of heated stew at the base of the pot to the stew of the topmost part is through this process.Thermal radiation: this is the heat waves from the camp fire that heats the pot of stew.Learn more about heat energy here:
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Does anyone have an answer for this? I need it before 1:22pm (CDT)
As a scientist, you are studying the physical properties of various substances. In your line of work, how will you effectively use physical properties to identify each substance?
Answer:
I would use physical properties to identify each substance because anything with the same physical properties as previous substances in the past.
Explanation:
pls mark brainliest with the crown. I need more to level-up
What would happen if the fusion rate in the core of the sun were increased but the core could not expand?.
If the fusion rate in the core of the sun were increased but the core couldn't expand then The Sun’s core would start to cool down and the rate of fusion would decrease.
When the core of sun is increased in that scenario, the reaction rate would in fact speed up and produce more energy, but the heat would also lead to a rise in pressure. The Sun would expand because the upward pressure force would outweigh the downward gravity force.
What is fusion?
A reaction known as fusion occurs when two or more atomic nuclei unite to create new atomic and subatomic particles (neutrons or protons). Energy is released or absorbed depending on how much mass there is between the reactants and products.
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a hockey puck is hit on a frozen lake and starts moving with a speed of 14.7 m/s. exactly 5.80 s later, its speed is 5.90 m/s. the acceleration of gravity is 9.81 m/s 2 . a) what is its average acceleration? answer in units of m/s 2 . how far does the puck travel during this 5.80 s interval? answer in units of m
The average acceleration of the hockey puck is 1.5172m/s² and the hockey puck travels 110.65 meters in the interval of 5.8 seconds.
The initial velocity of the player is 14.7m/s. The final velocity of the player is 5.90 m/s.
The time taken during the change of velocity is 5.8 seconds.
a) Average acceleration A of tha player,
A = ∆V/∆t
∆V total change in velocity,
∆t total change in time,
So, we can write,
A = 5.90-14.7/5.8
A = 1.5172m/s².
So, average acceleration is 1.5172m/s².
b) To find the distances travelled in the 5.8 second,
We can use the equation of motion,
S = Ut+1/2At²
U is initial velocity,
A is average acceleration,
t is the time,
S is the distance travelled,
Putting all the values,
S = 14.7(5.8)+1/2(1.51)(5.8)²
S = 110.65 meters.
So, the player travel 110.65 meters.
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a long ladder 20 feet long is leaning against a wall with one end on the floor. the bottom end of the the ladder is being pulled along the floor away from the wall at a constant rate of 1 2 feet/sec. assume that the top of the ladder is always in contact with the wall. what are the velocity and acceleration of the top of the ladder when the bottom of the ladder is 12 feet from the wall?
When a ladder with 20 ft. long is pulled along the floor away with a constant rate 1.2 ft/s, then the top of the ladder is moving toward the floor with velocity - 0.9 ft/s and there is no acceleration.
Let:
x = the distance between the bottom of the ladder from the wall
y = the distance between the top of the ladder from the floor
When x = 12 ft, then using the Pythagorean Theorem:
x² + y² = 20² (Equation 1)
12² + y² = 20²
y² = 20² - 12² = 16²
y = 16 ft.
Take the derivative of equation 1 with respect to t
2x . dx/dt + 2y. dy/dt = 0
Substitute x = 12, y = 16, dx/dt = 1.2 ft/s
2 . 12 . (1.2) + 2 . 16 . dy/dt = 0
dy/dt = - 0.9 ft/s
Hence, the velocity is - 0.9 ft/s
Since the floor is moving with a constant rate, the acceleration is zero.
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When developing the light bulb, thomas edison’s lab went through numerous materials until they found one that would work. Which one finally worked?.
The material that finally worked in developing the light bulb is
Carbonized cardboard/ filament.
The formation of the light bulb was an important contribution to physics and mankind. However, various experiments were conducted in different labs to produce a light bulb.
The scientists of the olden times were having trouble in finding a material that could burn for a long and not have such a short lifespan.
It was the lab in which Thomas Edison worked that first used carbonized carbon filament in the light bulb. Their research proved to be a breakthrough because carbon filaments have a longer lifespan and burned effectively when electricity was provided.
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14. suppose there is a 10 mbps microwave link between a geostationary satellite and its base station on earth. every minute the satellite takes a digital photo and sends it to the base station. assume a propagation speed of 2.4 x 108 m/s and the distance between satellite and station is 3.6 x 107 m. what is the propagation delay of the link?
The propagation delay of the link due to time dilatationis 1.152 x 10¹⁶ s.
We need to know about the time dilatation to solve this problem. Time dilatation represents that time is relative between the moving and static objects. From a static objects point of view, the time should be
t' = t / √(1 - v²/c²)
where t' is the interval time based on the static object, t is the interval time based on the moving object, v is velocity and c is the speed of light (3 x 10⁸ m/s),
From the question above, the given parameters are
v = 2.4 x 10⁸ m/s
D = 3.6 x 10⁷ m
Find the time taken based on moving objects
t = 2D . v
t = 2 . 3.6 x 10⁷ . 2.4 x 10⁸
t = 1.728 x 10¹⁶ s
Find the time interval based on static objects
t' = t / √(1 - v²/c²)
t' = 1.728 x 10¹⁶ / √(1 - (2.4 x 10⁸)²/(3 x 10⁸)²)
t' = 2.88 x 10¹⁶ s
Hence, the delay time is
Δt = t' - t
Δt = 2.88 x 10¹⁶ - 1.728 x 10¹⁶
Δt = 1.152 x 10¹⁶ s
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to stop your vehicle when the brakes fail, a. work the parking brake gradually to prevent locking up the wheels and sending the car out of control. b. pump your foot down on the accelerator. c. shift up to a higher gear to slow the car down. d. all of the above
The correct answer is option A.
To stop your vehicle when the brakes fail, work the parking brake gradually to prevent locking up the wheels and sending the car out of control.
Due to advanced technology, a complete brake failure has never occurred. However, there is the possibility of an unlikely scenario while driving your vehicle.
If you ever come across such an unfortunate situation where a brake failure occurs in your vehicle while driving here is the advice to act upon.
The few things which are essential to do are:
Keep pressing the brake pedal
Gradually pull down on the parking brake of your vehicle.
If it does not work, shift your attention to the lower gear and make sure one gear at a time to slow down your vehicle.
Drive into less hazardous areas make sure there are no people around you and do not turn off your engine until your vehicle is completely stopped.
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which of the following statements is correct: a. venturi meter is a common device for quantifying flow rate q based on differences in pressure. b. hot-wire anemometers measure fluid velocity based on effectiveness of heat transfer away from a heated wire. c. rotameters use drag on a floating object in equilibrium with its weight and buoyancy to indicate volume flow rate by position of the float. d. all of the above statements are correct.
Option D is correct. In venturi meter a converging section of a pipe is used to increase the flow velocity and corresponding pressure drop, from which the fluid flow rate is calculated using Bernoulli's equation.
A venturimeter is a flow measurement device. The meter is connected between two sections of the pipe; the cross-sectional area A of the meter's entrance and exit corresponds to the cross-sectional area of the pipe. The fluid flows from the pipe with speed V between the entrance and exit, and then through a narrow throat with cross-sectional area a with speed v. A venturi works by measuring the difference in pressure between two points. The pressure difference is created by narrowing the pipe, causing the fluid to flow faster. In the larger section of the venturi, the fast moving fluid has a lower pressure than the slower fluid.
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the twinkling of the stars is caused by . a. starlight interacting with earth's atmosphere b. refraction owing to the moon c. reflection owing to the moon d. the rotation of the sun
A star's twinkling is caused by light from the star being refracted by the earth's atmosphere.
What is stars?
An astronomical object known as a star is made up of a luminous plasma spheroid that is held together by gravity. The Sun is the star that is closest to Earth. Other stars are also visible at night with the unaided eye, but due to their great distances from Earth, they appear as stationary points of light. Many of the brightest stars have names, and the most notable stars have been grouped into constellations and asterisms. Star catalogues have been put together by astronomers that list the known stars and offer standardised stellar designations. An estimated 10^22–10^24 stars are present in the observable universe. Only 4,000 of these stars can be seen with the unaided eye, and they are all located in the Milky Way galaxy.
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Two drops of mercury each has a charge on 5.44 nC and a voltage of 235.15 V. If the two drops are merged into one drop, what is the voltage on this drop?
To find the voltage of the combined drops, we can just add the voltage of both drops together.
2(235.15) = 470.3 Volts
During which time interval was the motion fastest? responses 1 h to 2 h 1 h to 2 h 2 h to 3 h 2 h to 3 h 3 h to 4 h 3 h to 4 h 4 h to 5 h
Answer: 1h
Explanation:
A ball is thrown upward with an initial velocity of 20ft/s.
a ) What is the acceleration of the ball on its way up?
b ) what is the velocity of the ball at the very top of its path?
c) what is the acceleration of the ball on its way down?
Answer: the acceleration is 63737737ey
the velpcoty is is 7-922=2929
the acceleration down is 99102>2929<92
Explanation: because when the ball goes up it has to come down due to gravity, physics, and your very kind and nice mother. I hope this helped you! i bet you will ace this assignment.
A student learns that a certain comet in the solar system is considered a short-period comet. Based on this knowledge, what is the student most justified in concluding?.
A student learns that a certain comet in the solar system is considered a short-period comet. Based on this knowledge, the student most justified in concluding The comet originates between the Sun and the asteroid belt.
The Solar System's asteroid belt is a torus-shaped area roughly midway between the orbits of Jupiter and Mars. Asteroids or minor planets are the names for the vast majority of solid, irregularly shaped entities that are far smaller than planets. The term "primary asteroid belt" also applies to this asteroid belt.
A comet is a tiny, frozen object in the Solar System that begins to outgas when it approaches the Sun. Outgassing is the process through which gases are released from the comet.
The orbital durations of comets differ widely, from a few years to possibly millions of years, and they often have very eccentric elliptical orbits. The Kuiper belt or its related scattered disc is the source of short-period comets.
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tell the answer please
r - Radius
h - Height
1. Area of a circle = π×r²
2. Circumference of a circle = 2×π×r
3. Volume of a cylinder = π×r²×h
A region's size on a plane or curved surface is expressed by the term "area," which is a mathematical concept. As opposed to surface area, which refers to the area of an open surface or the boundary of a three-dimensional object, plane region or plane area refers to the area of a form or planar lamina.
The circumference of a circle or ellipse in geometry is its perimeter. That is, if the circle were opened up and straightened out to a line segment, the circumference would be the length of the arc. The curve length around any closed figure is more often referred to as the perimeter.
A cylinder is one of the most basic curvilinear geometric shapes and has traditionally been a solid in three dimensions. It is regarded as a prism with a circle as its base in basic geometry. In several contemporary fields of geometry and topology, a cylinder can alternatively be characterized as an infinitely curved surface.
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The speed of sound in a particular gas is 675 m/s. A sound wave propagating in this material has a wavelength offifteen meters. What is the frequency of this sound?knowns and unknownsolveright answer
Given, Speed of the sound, v=675 m/s
The wavelength of the wave, λ=15 m
Relation between speed, wavelength, and frequency of a wave is given by
[tex]v=f\lambda[/tex]Where f is the frequency of the sound.
On substituting the known values,
[tex]675=f\times15[/tex]Which gives us,
[tex]f=\frac{675}{15}=45\text{ Hz}[/tex]Therefore the frequency of the sound in the given medium is 45 Hz.
1. keep sensor at a distance of 2 meter from charge. what is the value of electric field at this point? calculate the value by using formula of electric field. do both values match?
The value of electric field is 2.247 V/m. Yes, the observed value and calculated values of electric field match.
The electric field will be calculated using the formula -
E = kq/r². In this formula, E stands for electric field, k represents constant of proportionality, q is the charge of electron and r is the distance. As per the known fact, the value of k is 8.89×10⁹ N m²/C² and value of q is 1.6×[tex] {10}^{ - 19} [/tex] C.
Keep the values in formula for calculation of electric field.
E = (8.89×10⁹ × 1.6×[tex] {10}^{ - 19} [/tex])/2²
Taking square in denominator
E = (8.89×10⁹ × 1.6×[tex] {10}^{ - 19} [/tex])/4
Performing multiplication and division
E = 2.247 V/m
Thus, the observed and calculated electric field is 2.247 V/m, which is equal in both the cases.
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The complete question is attached in the diagram.
which is the best definition of pitch
Answer:
a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars
Explanation:
you walk for 6.44 km with at a constant velocity of 2.60 m/s due west, turn around, and then walk with an average velocity of 0.465 m/s due east. from your starting point to your destination, your overall average velocity is 1.37 m/s due west. during the trip, how far east did you walk?
The distance travelled due east during the trip is 875.831 meters.
The distance due west is 6.44 km (6440m) and the velocity due west is 2.6m/s. The velocity due east is 0.465m/s.
We know,
Average velocity = Total displacement/Total time
It is given that, the total average velocity is 0.465m/s.
If distance in west is W and the distance in east is E, then the displacement D is,
D = √((6440)²+(E)²)
The time T₁ in west,
T₁ = 6440/2.6 seconds
Time time T₂ in east,
T₂ = E/0.465
The total time T is,
T = T₁ + T₂
T = 6440/2.6 + E/0.465
So, putting all the values now,
Average velocity = D/T
1.37 = √((6440)²+(E)²)/(6440/2.6 + E/0.465)
On solving it further,
We get,
E = 875.831 meters.
So, the distance in east is 875.831 meters.
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A glass of ice at 0°C, has partially melted to form a mixture of ice and ice water. How has the thermal energy changed between these two stages?
In between the two processes, we can see that the thermal energy of the mixture increases.
What is thermal energy?Recall that energy is the ability to do work. Now when we add the partially melted to form a mixture of ice and ice water, we are going to increase the thermal energy of the water. This is because the water in the liquid state has a greater energy than water in the solid state.
Having see that liquid water contains more energetic particles than the the solid water, the thermal energy has increased in between the two processes.
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3. Complete the table below.
Symbol Atomic
Number
Na
Cl
Ar
Ca
11
20
Mass
Number
36
40
Number of
Protons
17
Number of Number of
Electrons
Neutrons
18
12
18
Answer:
Explanation:
Elements Atomic No. Mass No. Proton No. Electron No. Neutron No.
Na 11 23 11 11 12
Cl 17 35 17 17 18
Ar 18 36 18 18 18
Ca 20 40 20 20 20
Atomic number = Proton number
Electron number = proton number
Mass Number = proton no. + neutron no.
Neutron number = Mass no. - proton no.
the temperature of the earth is determined by the amount of solar radiation received, the amount of solar energy reflected, and the amount of heat retained by the what?
The temperature of the Earth is determined by the amount of solar radiation received, the amount of solar energy reflected, and the amount of heat retained by the atmosphere.
What is temperature?
The physical concept of temperature expresses in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined various reference points as well as thermometric substances. The most popular scales are the Celsius scale, also known as centigrade, with the unit symbol °C, the Fahrenheit scale (°F), as well as the Kelvin scale (K), with the latter being primarily used for scientific purposes. One of the International System of Units' seven base units is the Kelvin (SI).
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racing greyhounds are capable of running at very high speeds. a typical greyhound racing track has turns that are 49 m diameter semi-circles. a greyhound can run around these turns at a constant speed of 15 m/s. what is the greyhound's acceleration?
The acceleration of greyhound's is 0 m/s².
We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule
vt = vo + a . t
vt² = vo² + 2a . s
s = vo . t + 1/2 . a . t²
where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.
From the question above, we know that
s = 49 m
vo = vt = 15 m/s
Find the acceleration
vt² = vo² + 2a . s
15² = 15² + 2 . a . 49
a = 0 m/s²
The acceleration is zero because the constant speed.
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A substance added to gasoline is found in the wells of people who live miles from a gas station. Is this an example of a point source of pollution or a nonpoint source of pollution? Explain.
I need to get it done right now
The substance added to gasoline and found in the wells of people who live miles from a gas station is an example of non-point source of pollution.
What are point source pollution?Point source pollution are sources of pollution, radiation, waves, fluid or other substance that has one specific location.
On the other hand, non-point source pollution is a combination of pollutants from a large area rather than from specific identifiable sources such as discharge pipes.
According to this question, a substance added to gasoline is found in the wells of people who live miles from a gas station. This suggests that the pollutants enter from a wide array of sources.
Therefore, it can be said that the source of pollution is a non-point source.
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Select the correct answer. when a small star dies, which of these celestial objects is it most likely to help create? a. a planet b. a star c. a moon d. a meteor e. a comet
It is best to choose option B. When a star runs out of fuel, it can no longer undergo the merger process and dies. The primary elements of stars are helium and hydrogen.
A white dwarf star's maximum mass is determined by Chandrasekhar's limit, a sort of maximum restricted value. The Chandrasekhar limit is often valued at 1.44 times the mass of the sun, or around 2.765 1030 kg, on a global scale.
In other words, the Chandrasekhar limit is the highest figure that may possibly reach 1.44 times the mass of the sun.
When a high-mass star runs out of gas to burn, it enlarges and changes into a red supergiant. While the bulk of stars gradually fade away, the supergiant stars, often known as supernovae, demolish themselves in a massive explosion. New stars can develop as a result of massive stellar deaths.
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fish are hung on a spring scale to determine their mass. (a) what is the force constant of the spring in such a scale if it stretches 6.55 cm for a 17.8 kg load?
The force constant of the spring is 2,717 × [tex]10^{3}[/tex] N/m
To solve this problem, we should understand Hooke's Law. According to this law, the displacement or magnitude of a deformation is directly proportional to the deforming force or load for relatively modest deformations of an item. Mathematically, Hooke's Law could be stated in a form of equation as written below.
[tex]F = k[/tex] Δ[tex]x[/tex]
where [tex]F[/tex] is the force, [tex]k[/tex] is the spring constant, and Δ[tex]x[/tex] is the displacement.
In this question, we have already known the value of force (as a result of multiplication between weight of the load and gravity value) and displacement.
[tex]F = 178 N[/tex]
Δ[tex]x[/tex][tex]= 0.0655 m[/tex]
By using the formula of Hooke's Law, we could calculate the value of spring constant.
[tex]F = k[/tex] Δ[tex]x[/tex]
[tex]k=F/[/tex]Δ[tex]x[/tex]
[tex]k = 178 N / 0.0655[/tex]
[tex]k = 2717 N/m[/tex]
[tex]k = 2,717[/tex] × [tex]10^{3} N/m[/tex]
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an airplane travels from a to b and back with no wind in 4h and 48 min; same airplane travels from a to b and back, with wind speeds of 100mph, and this time takes 5hrs instead; what is the distance between a and b?
The distance between the points A and B is 6000 miles.
Let us assume that the distance between the points a and b is D.
Now, we know, airplane takes 4 hours and 48 minutes to move from a to b and back with no wind
Let us say the speed of the airplane is V.
So, we know,
Average Speed = total distance/total time
The distance between a to b and back is 2D.
So, we can write,
V = 2D/4.8
2D = V(4.8)
With wind of speed V'=100mph, it take 5 hours for the airplane to go from a to b ane back.
The average velocity of airplane in wind is,
V + V' = 2D/5
Putting value of 2D,
V + V' = V(4.8)/5
5(V + 100) = 4.8V
5V + 500 = 4.8V
0.2V = -500
V = -2500mph
The negative sign only means that we have taken the opposite direction, so that is not a problem and we can ignore it,
So,
We know,
2D =V(4.8)
D = 2500(4.8)/2
D = 6000 miles.
So, the distance between the two points is 6000 miles.
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