A plane flying due north at 191 mph encounters winds that blow the plane due east at 45 mph. Determine the plane's resultant velocity. Record your answers to the nearest tenth.

6

Explanation:

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La distancia que el bote se desplaza rio abajo es 44.5 metros.

Debemos recordar que la velocidad en cada eje es independiente de la velocidad en el otro eje. Tambien recordar que:

distancia = velocidad*tiempo.

Esto quiere decir que si el bote se mueve a 8m/s de un extremo al otro del rio, esta velocidad en esta dirección se va a mantener.

Entonces el tiempo que tarda en viajar 89 metros (el ancho del rio) a una velocidad de 8m/s es:

T = (89 m)/(8m/s) = 11.125 segundos.

Ahora notamos que durante esos 11.125 segundos el bote tambien se mueve siguiendo el flujo del rio, a una velocidad de 4.0 m/s, entonces la distancia que el bote se desplaza rio abajo es:

D = 11.125s*4.0m/s = 44.5 metros

Sí quieres aprender mas sobre velocidad, puedes leer:

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Answer:

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Hi there!

We can use the following equation to solve for displacement:

vf² = vi² + 2ad, where:

vf = final velocity

vi = initial velocity

a = acceleration

d = displacement

Since the car will come to rest, vf = 0, so:

0 = vi² + 2ad

Plug in the given values:

0 = 25² + 2(-5)d (Breaking is a negative acceleration in this instance)

Solve:

0 = 25² - 10d

10d = 625

d = 62.5m

Subtract from the total distance from the car to the tree:

65 - 62.5 = 2.5m

Answer:

hpqfie

Explanation:

wdq i love math WOOOOO

Answer:

Change in volume / volume = 3 K change in temperature

K = 24E-6 / deg C     coefficient of linear expansion

R = 4.1 cm

dR / R = 24E-6 * 120 dec C = 2.88E-3

V = 4/3 pi R^3

dV = 4 pi R^2 dR

dV / V = 3 dR / R = 2.88E-3 * 3 = 8.6E-3 = .86%

The percentage change in volume of the aluminum sphere at the given cubic expansivity is 0.9%.

The percentage change in the volume of the aluminum sphere is determined by applying cubic expansivity formula of the aluminum.

V₁ = ⁴/₃πr³

where;

V₁ = ⁴/₃π(0.041)³

V₁ = 2.887 x 10⁻⁴ m³

[tex]\beta = \frac{\Delta V}{V_1 \Delta T}[/tex]

where;

[tex]\Delta V = \beta V_1 \Delta T\\\\\Delta V = (75 \times 10^{-6} )(2.887 \times 10^{-4})(150 - 30)\\\\\Delta V = 2.6 \times 10^{-6} \ m^3[/tex]

[tex]\% (V)= \frac{\Delta V}{V_1} \times 100\%\\\\\% (V)= \frac{2.6 \times 10^{-6}}{2.887 \times 10^{-4}} \times 100\%\\\\\% (V)= 0.9 \ \%[/tex]

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Answer:

Steps and solution in the attached pictureSteps and solution in the attached picture.

Explanation:

Steps and solution in the attached pictureSteps and solution in the attached picture.

The velocity of the second ball just after it is struck will be 9.091 m/s.

To quantify the effect of force acting over time to change the momentum of an object is referred to as impulse.

To calculate the velocity in the given scenario,

Given that,

mV=1.5

[tex]V=\frac{impulse}{mass}[/tex]

[tex]V=\frac{1.5}{0.165}[/tex]

V=9.091 m/s

Thus, the velocity will be 9.091 m/s.

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Answer:

a force is represented by a vector the choice of a reference frame is necessary​

Explanation:

Answer:

There is a potential difference applied to three resistors connected in series R1, R2, R3. If R1 < R2 < R3, which resistor has the greatest potential difference? Which resistor has the smallest voltage?

Explanation:

Answer:velocity - decreases

acceleration remains constant

Explanation:

The characteristics of thermal conductivity and thermal insulation allow finding the correct answers for the window length study experiment to be correct are:

      C.  Select windows with pieces of glass made from the same type of glass.

      D.  Select windows with pieces of glass made from the same thickness of glass,

Thermal transfer processes are determined by the characteristics of the materials and their way of construction, but all of them can be described by the expression.

                [tex]P = \frac{A}{R} \Delta T[/tex]  

                [tex]R = \frac{L}{k}[/tex]  

where P is the heat flux, A the area of ​​the windows, ΔT the variation in temperature, R is the insulating value of the material, L is the length of the compound and k the thermal conductivity.

Let's examine the criteria that the student must have for the experiment to be repetitive and to be able to compare the results, let's examine the different responses:

A) False. The flow is proportional to the area, so to be able to compare the results, all the windows must have the same area.

B) False. This possibility is interesting, but it is difficult to maintain the different atmosphere besides being expensive, gases in normal conditions have very similar properties.

C) True. The thermal conductivity of different glasses changes a lot, so there should not be different glass in the windows.

D) True. The constant R is proportional to the thickness of the glass, so it is essential that all windows have the same thickness glass.

In conclusion, using the characteristics of thermal conductivity and thermal insulation, we can find that the correct answers for the window length study experiment to be correct are:

     C.  Select windows with pieces of glass made from the same type of glass.

      D.  Select windows with pieces of glass made from the same thickness of glass,

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Answer:

205 kilograms.

answer ok :)

Answer:

Radiation is the transfer of energy through waves (electromagnetic radiation) or fast traveling particles (particulate radiation). Radiation can be in the form of heat, sound and light. Radiation can be felt or seen like light or detected through special instruments like X-ray. Radiation from a hot object is shorter..

Explanation:

Answer:

D.

Explanation:

A

because energy is also a product

Answer:

f = 25 lbs

m = 5 lbs

a =?

f = ma

25 = 5 a( divide both sides by 5)

a = 5(lbs)

Answer:

The scientific method helps test and arrive at conclusions for a variety of hypotheses that are created when studying environmental science.

Explanation:

What is the scientific method in environmental science?

The scientific method is a method of research with defined steps that include experiments and careful observation. One of the most important aspects of this method is the testing of hypotheses by means of repeatable experiments. A hypothesis is a suggested explanation for an event, which can be tested.

[tex]\bull\sf Torque=\tau=20.0\times 10^{-9}Nm[/tex]

[tex]\bull\sf \theta=30°[/tex]

[tex]\bull\sf E=9.0\times C.m=9.0\times 10^{-12}N/C[/tex]

Now we know

[tex]\\ \sf\longmapsto \tau=pEsin\theta[/tex]

[tex]\\ \sf\longmapsto p=\dfrac{\tau}{Esin\theta}[/tex]

[tex]\\ \sf\longmapsto p=\dfrac{20\times 10^{-9}}{9\times 10^{-12}\times sin30}[/tex]

[tex]\\ \sf\longmapsto p=\dfrac{20\times 10^{-9}}{9\times 10^{-12}\times \dfrac{1}{2}}[/tex]

[tex]\\ \sf\longmapsto p=\dfrac{20\times 10^{-9}}{9\times 10^{-12}}\times 2[/tex]

[tex]\\ \sf\longmapsto p=4.4\times 10^3N/C[/tex]

The magnitude of the externla electric field is 4,444.44 N/C.

The magnitude of the charge is 3.1 x 10⁻¹² C.

The magnitude of the externla electric field is calculated as follows;

EPsinθ = τ

where;

[tex]E = \frac{\tau}{P sin(\theta)} \\\\E = \frac{20 \times 10^{-9}}{9\times 10^{-12} \times sin(30)} \\\\E = 4,444.44 \ N/C[/tex]

The magnitude of the charge is calculated as follows;

[tex]E = \frac{kQ}{r^2} \\\\Q = \frac{Er^2}{k} \\\\Q = \frac{(4,444.44) \times (2.5 \times 10^{-3})^2}{(9\times 10^9)} \\\\Q = 3.1 \times 10^{-12} \ C[/tex]

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Answer:

D. and A

Explanation:

logical thought is base on functional fixedness; mental sets while creative problem solving uses insight; algorithms.

Answer:

It will take 0.46 seconds to reach home plate by ball.

Explanation:

Answer:

hey i dont know what it is

Explanation:

The conservation of energy allows finding the result of the velocity of the body 2 when it reaches the ground is:

          v = 6.32 m / s

Given parameters

To find

The conservation of energy is one of the most important principles of physics, it establishes that if there is no friction force, the mechanical energy is conserved at all points, where the mechanical energy is the sum of the kinetic energy plus the different potential energies.

Let's write the energy at two points before we drop the system.

     Em₀ = U₁ + U₂

Where potential energy is

    U = m g y

They indicate that body 1 is on the ground and body 2 is at a height .

      y₂ = 8 m

      Em₀ = m₂ g y₂

Let's write the energy of the system for when body 2 is reaching the ground

       [tex]Em_f[/tex] = K₂ + K₁ + U₂ + U₁

At this moment body 2 is reaching the ground, its height is zero and the height of body 1 is y₁ = 8 m. Since the two bodies are joined by the rope, they must have the same speed..

      [tex]Em_f[/tex] = ½ (m₁ + m₂) v² + m₁ g y₁

As there is no friction, the energy is conserved.

      Em₀ = Em_f

      m₂ g y₂ = ½ (m₁ + m₂) v² + m₁ g y₁

The rope is inextensible, the heights are equal.

       y₁ = y₂ = y = 8.0 m

      v² = [tex]\frac{m2-m1}{m2+m1} \ 2g y[/tex]  

Let's calculate.

       [tex]v^2 =\frac{22.9-13.6}{ 22.9+13.6} \ 2 \ 9.8 \ 8 \\ v = \sqrt{39.95}[/tex]

      v = 6.32 m / s

In conclusion using the conservation of energy we can find the result of the velocity when the body 2 reaches the ground is:

          v = 6.32 m / s

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Answer:

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Answer:

The geocentric model could not fully explain these changes in the appearance of the inferior planets (the planets between the Earth and the Sun). Furthermore, Galileo's observations of Jupiter's moons made it clear that celestial bodies do move about centers other than the Earth.

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What is the variable?

~the price is the variable.

What happens to demand?

~It'll go down. Since the price of snow blowers will increase then the quantity demanded will go down.

Hope this helps- have a good day bro cya)

I agree with the other answer

What is the variable?

~the price is the variable.

What happens to demand?

~It'll go down. Since the price of snow blowers will increase then the quantity demanded will go down.

Answer:

it is b or c

Explanation:

Answer:

The answer is B I did the test.

Explanation:

I hope it helps!

Answer:

I think it A. Average kinetic energy of

Explanation:

In solids, the molecules are very close together and the attraction between the molecules are great. This causes a substance to have a structure in which the molecules have little freedom to move, as you would see in the case of ice. In the case of a liquid, the molecules are closely spaced, though not as closely spaced as a solid, they have more freedom to move and the intermolecular forces are weaker that that of a solid. Thus a liquid can flow, unlike a solid. Now in a gas, the molecules are sufficiently far apart that there are little to no attractive forces. Because of this a gas can easily be compressed and take the shape of the container.

Now as you heat a solid turning it into a liquid, you increase the kinetic energy of its molecules, moving them further apart until the forces of attraction are reduced to allow it to flow freely. Keep in mind the forces of attraction still exists. Now as you heat a liquid, turning it into a gas, the kinetic energy of the molecules are increased to a point where there are no forces of attraction between the molecules.

The energy required to completely separate the molecules, moving from liquid to gas, is much greater than if you were just to reduce their separation, solid to liquid. Hence the reason why the latent heat of vapourization is greater that the latent heat of fusion.

Answer:

yes zero colder enough

Explanation:

for temperature ^_^^_^

Answer:

the paper

Explanation:

Notice that both strings have the same length, so they form an isosceles triangle, which means the angles they make with the ceiling are congruent.

If this angle has measure θ, then the angle between the two strings T₁ and T₂ has measure 180° - 2θ. This is because the interior angles of any triangle sum to 180°.

By the law of cosines, we have

(1 m)² = (0.87 m)² + (0.87 m)² - 2 (0.87 m)² cos(180° - 2θ)

Solve for θ :

(1 m)² = 2 (0.87 m)² - 2 (0.87 m)² cos(180° - 2θ)

(1 m)² / (2 (0.87 m)²) = 1 - cos(180° - 2θ)

cos(180° - 2θ) = 1 - (1 m)² / (2 (0.87 m)²)

cos(180° - 2θ) ≈ 0.3394

180° - 2θ = arccos(0.3394)

180° - 2θ ≈ 70.159°

2θ ≈ 109.841°

θ ≈ 54.9205° ≈ 55°

Answer:

true

Explanation: