A window is replaced by a wall with thick insulation. The thermal conductivity of the same area will be decreased to 0.0039 W/m/°C and the thickness will be increased to 16 cm. Determine the rate of heat transfer through this area of 2.16 m2 when the temperature outside is 25 C and the temperature inside is 19 C.

Answer:

85 miles .

Explanation:

Displacement along the 110 South freeway = 260 - 150  =  110 miles

Displacement along the 110 North freeway = 150 - 175   = - 25 miles

Net displacement = 110 - 25 = 85 miles

So Joey's displacement from the 260 mile marker is 85 miles .

The absolute maximum bending stress in the shaft if it is subjected to the pulley loadings is (P1 + P2 + RA + RB) / (π x (2)^2/4).

The maximum bending stress in a steel shaft with a diameter of 2 in, subjected to pulley loadings, can be determined using the following equation:

σ = P/(π x d^2/4)

where P is the load in pounds, and d is the diameter of the shaft in inches.

In this case, P is the sum of the two pulley loads. Since the bearings A and B are only exerting vertical reactions on the shaft, these should be included in the calculation.

Therefore, the maximum bending stress in the steel shaft is σ = (P1 + P2 + RA + RB) / (π x (2)^2/4). This value should be compared to the allowable bending stress for the material to ensure that the shaft is designed to handle the applied loads without exceeding the material's strength properties.

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Answer:

The only way to increase a wavelength without changing speed is by decreasing the frequency. This happens when a note is lowered, and the crest of each waves separates farther and farther.

Higher frequencies consist of compact wavelengths.

Electricity can be produced by the relative motion of coil and a magnet.

We know that it is possible that we can be able to generate electricity by the alteration of a magnetic field. This is what we call the generation of electricity by electromagnetic induction. This was well discussed by Michael Faraday.

We have to note that the relative motion between the coils and the magnetic field is able to cause the fact that current would be induced in the coils as stated by the principle.

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Answer:

Length - meter (m)

Time - second (s)

Amount of substance - mole (mole)

Electric current - ampere (A)

Temperature - kelvin (K)

Luminous intensity - candela (cd)

Mass - kilogram (kg)

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Answer: Ball #1

Explanation:

Since the platform is more inclined, it will allow the ball to roll down faster.

The coefficient of kinetic friction between the car’s tires and the road 0.783.

Kinetic friction is described as a force that acts between moving surfaces. A frame shifting on the surface stories a force inside the contrary direction of its motion. The significance of the pressure will rely upon the coefficient of kinetic friction between the 2 substances.

Calculation:-

mass = 1500 kg

v = 130 km/hr × 5/18

  = 36.11 m/s

stopping distance = 85 m

final speed = 0

V² = U² - 2aS

a = U²/2S

  = (36.11)² / 2 × 85

 = 7.67 m/s²

The coefficient of friction μ

ma = μmg

μ = a/g

  = 7.67/9.8

  = 0.783

travel is the movement of humans among distant geographical places. journey can be done via foot, bicycle, vehicle, teach, boat, bus, airplane, deliver or other manner, with or without luggage, and can be one way or round ride.

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Answer:

radiation heat.

Explanation:

That is any heat that passes through the air, like the sun.

Answer:

radiation

Explanation: I’m sure

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Main Answer: Dot product of u¯¯¯ and v¯¯¯: -5k

Cross product of v¯¯¯ and w¯¯¯¯: -4k

Scalar triple product of u¯¯¯, v¯¯¯, and w¯¯¯¯: -20kj

Supporting Question and Answer:

What are the properties and operations used to calculate the dot product, cross product, and scalar triple product of vectors?

The dot product involves multiplying corresponding components of two vectors and summing them up. The cross product is obtained by calculating the determinant of a 3x3 matrix formed by the vectors' components. The scalar triple product combines the dot product and cross product, where the dot product is taken between one vector and the cross product of the other two vectors.

Body of the Solution: To compute the requested values, let's go through each calculation step by step:

1.Dot product of u¯¯¯ and v¯¯¯:

u¯¯¯ · v¯¯¯ = (5j) · (ij - k)

= 0i + 5j · ij + 5j · -k

= 0 + 5(0) - 5k

= -5k

2.Cross product of v¯¯¯ and w¯¯¯¯:

v¯¯¯ × w¯¯¯¯ = (ij - k) × (-3i - 4j - 2k)

= (0i + jk) × (-3i - 4j - 2k)

= (0i + jk) × -3i - (0i + jk) × 4j - (0i + jk) × 2k

= -3(0i × i) - 4(jk × j) - 2(jk × k)

= -4k

3.Scalar triple product of u¯¯¯, v¯¯¯, and w¯¯¯¯:

u¯¯¯ · (v¯¯¯ × w¯¯¯¯) = 5j · (-4k)

= 0i + 5j · (-4k)

= -20kj

Final Answer:

Therefore, the computed values are:

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The computed values are:

Dot product of u¯¯¯ and v¯¯¯: -5k

Cross product of v¯¯¯ and w¯¯¯¯: -4k

Scalar triple product of u¯¯¯, v¯¯¯, and w¯¯¯¯: -20kj

The dot product involves multiplying corresponding components of two vectors and summing them up. The cross product is obtained by calculating the determinant of a 3x3 matrix formed by the vectors' components. The scalar triple product combines the dot product and cross product, where the dot product is taken between one vector and the cross product of the other two vectors.

To compute the requested values, let's go through each calculation step by step:

1. Dot product of u¯¯¯ and v¯¯¯:

u¯¯¯ · v¯¯¯ = (5j) · (ij - k)

= 0i + 5j · ij + 5j · -k

= 0 + 5(0) - 5k

= -5k

2. Cross product of v¯¯¯ and w¯¯¯¯:

v¯¯¯ × w¯¯¯¯ = (ij - k) × (-3i - 4j - 2k)

= (0i + jk) × (-3i - 4j - 2k)

= (0i + jk) × -3i - (0i + jk) × 4j - (0i + jk) × 2k

= -3(0i × i) - 4(jk × j) - 2(jk × k)

= -4k

3. Scalar triple product of u¯¯¯, v¯¯¯, and w¯¯¯¯:

u¯¯¯ · (v¯¯¯ × w¯¯¯¯) = 5j · (-4k)

= 0i + 5j · (-4k)

= -20kj

Therefore, the computed values are:

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At a distance of 25.8" from the centerline, the phase difference between the light from the two slits is roughly 0.101 radians.

The following formula can be used to determine the phase difference between the light from the two slits:

Δφ = (2π/λ) * d * sinθ

where d denotes the distance between the slits, denotes the angle at which the light is diffracted from the centerline, and denotes the difference in phase between the light coming from the two slits.

By entering the specified values, we obtain:

= (0.300 mm * sin(25.8") * (2/480 nm)

Note that we must change the angle from arcseconds to radians and the distance between the slits from millimetres to metres:

= sin(25.8/3600 * /180) * sin(2/480e-9 m) * 0.0003 m

When evaluating this phrase, we obtain:

Δφ ≈ 0.101 rad

As a result, at a distance of 25.8" from the centerline, the phase difference between the light from the two slits is roughly 0.101 radians.

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Neutral atoms contain the same amount of protons and electrons, protons are electrostatic attraction, stellar spectra are absorbance spectra, and spectra may show the chemical makeup of stars.

Information about a star's temperature, chemical make-up, and inherent brightness may be found in its spectrum. A series of photographs taken at various wavelengths of the split in the star's light make up spectrograms produced by slit spectrographs.

The transitions of electrons inside atoms or ions form spectral lines, which are typically dark absorbing lines but may also be dazzling emission lines in some things.

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Answer:

B seismic wave

Answer:

Constructive interference.

Step-by-step explanation:

Constructive interference occurs when the maxima of two waves add together so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes.

Answer:

This brightly colored fish is native to the Indo-Pacific from Australia north to southern Japan and south to Micronesia.  The lionfish is usually found in coral reefs of tropical waters, hovering in caves or near crevices.  Native regions as well as Savannah, Georgia; Palm Beach and Boca Raton, Florida; Long Island, New York; Bermuda and possibly Charleston. In southern Florida and off the coast of the Carolinas in early to mid 1990s.

Answer:I really don't know sorry

Explanation:

Answer:

reviewing the statement we can say that it is FALSE

Explanation:

The Doppler effect is the change in the perceived frequency of a sound wave by the RELATIVE MOTION of the source and the observer.

This effect is very useful for finding the speed of an object.

When reviewing the statement we can say that it is FALSE

Answer:

hope this helps D.

Explanation:

Mechanical energy may not be conserved when nonconservative forces act. For example, when a car is brought to a stop by friction on level ground, it loses kinetic energy, which is dissipated as thermal energy, reducing its mechanical energy.

A when you are in outer space since there is no gravity the mechanical energy just continues to push the direction it was pointed to  

Answer:

d: 870 Hz

Explanation:

According to past research, women have engaged in token resistance, which means they said no but then changed their minds and said yes. This occurs because of the cultural expectations that women are supposed to resist sexual advances even if they want to participate.

Because of this, women may feel pressure to refuse initially to maintain their reputation and avoid being seen as promiscuous. However, once the partner persists, they may give in to avoid being seen as too difficult or cold-hearted. Research has indicated that these behaviours are particularly evident in situations where the individual feels vulnerable or feels that they are in a low-power position. Women may also engage in token resistance to test their partner's sincerity and willingness to respect their boundaries. Additionally, it's worth noting that token resistance does not apply only to women, as men may also engage in this behaviour.

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a) Required chip rateThe processing gain is given by\[G_p = 10{\log _{10}}\left( {{\rm{\Gamma }}{N_{ch}}/{B_c}} \right)\]where Γ is the number of chips per symbol, Nch is the number of hopping channels, and Bc is the chip rate.To determine the chip rate, we must first determine the symbol rate. In this case, the symbol rate is the same as the sampling rate of the PCM modulator, which is 256 × 3.4 kHz = 870.4 kHz.

Since there are Γ chips per symbol, and the processing gain must be at least 23 dB,\[\begin{gathered}

 23{\rm{ dB}} = 10{\log _{10}}\left( {\Gamma {N_{ch}}/{B_c}} \right) \Rightarrow \hfill \\

 10^{23/10} = \Gamma {N_{ch}}/{B_c} \Rightarrow \hfill \\

 {B_c} = \Gamma {N_{ch}}/{{10}^{23/10}} \hfill \\

\end{gathered} \]Let us suppose that we use a pseudo-random sequence of length m = 4. In this case, the number of chips per symbol is given by\[{\Gamma _{DS-SS}} = {2^m} - 1 = 15\]Thus, substituting into the previous equation, we get\[B_c = \left( {15\, \times \,{N_{ch}}} \right)/{6.309}\]Solving for Bc and substituting the processing gain requirement of 23 dB, we get\[B_c \ge 3.194\,{\rm{MHz}}\]Thus, the required chip rate is at least 3.194 MHz.

b) Number of hopping channels if the speech was transmitted by a frequency-hopping spread spectrum (FH-SS) systemThe number of hopping channels can be determined using the relationship\[N_{ch} \le B_c/W\]where W is the frequency range covered by the frequency-hopping sequence. In a FH-SS system, this frequency range must be larger than the baseband bandwidth of the signal, which in this case is 3.4 kHz. If we choose a frequency range of W = 4 kHz, then we get\[N_{ch} \le B_c/W = 3.194/4 = 798.5\]Since Nch must be an integer, we can choose Nch = 798. Therefore, the number of hopping channels is 798.

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Answer:

hurricanes are the most awesome Violet storms on the earth people call the storms by other names such as typhoon or cyclone depending on where the car whatever they are called topical cologne all from the same way

Explanation:

so technically hurricanes are the most Violet storms

Answer:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water

Explanation:

Planet density are uneven they all have different density.

Mass per unit of volume is referred to as density. Although the Latin letter D can also be used, the sign most frequently used for density is. Mass divided by volume is how density is mathematically defined:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water

Planet density are uneven they all have different density.

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I agree with Eve's hypothesis that the cart full of groceries applied more force to the empty cart than the empty cart applied to the full cart. This can be explained by Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

When the two carts collide, they exert equal and opposite forces on each other. The force exerted by the full cart on the empty cart is equal in magnitude but opposite in direction to the force exerted by the empty cart on the full cart. According to Newton's third law, these forces are a pair of action-reaction forces.

The force experienced by an object can be calculated using the equation F = m * a, where F is the force, m is the mass of the object, and a is the acceleration. Since the masses of the two carts are different (20 kg for the empty cart and 40 kg for the full cart), the force experienced by each cart will be different if the acceleration is the same.

Given that the carts collide, it is reasonable to assume that they experience the same acceleration in the opposite directions. Therefore, the force experienced by the empty cart will be smaller than the force experienced by the full cart. This is because the force is directly proportional to the mass according to Newton's second law (F = m * a).

In conclusion, according to Newton's third law of motion, the cart full of groceries applied more force to the empty cart than the empty cart applied to the full cart. The difference in mass between the two carts results in a difference in the forces they exert on each other during the collision.

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The mass of the vessel, m = 74400 kg

The external diameter, d = 5.20 m

Radius, r = 5.2 / 2 = 2.6 m

The volume of the vessel is given by the volume of a sphere

a) The buoyant force (B) is given by the formula:

b) The tension in the cable is given by the equation

Where T represents the tension

T = 739613.35 - 74400(9.8)

T = 10493.35

Answer: d) the elements in two compounds switch places

Explanation: just took it

The statement that describes energy of the roller coaster as it slows down while travelling to the top of the coaster is 'The cart loses kinetic energy and gains potential energy.'

Consider three roller coaster points that are each at a different height from the ground. If we disregard all frictional and drag forces and focus just on the conservative forces acting on the roller coaster car, we may assume that all kinetic and potential energy is conserved. As a result, energy only transforms from one form to another.

When the roller coaster vehicle hits the bottom, it will have reached its maximum level of kinetic energy since all of the gravitational potential energy has been transformed into kinetic energy.

At the top of the roller coaster, the object has its maximum gravitational potential energy and none at all (assumed there is no velocity). As the object begins to fall to the bottom, its gravitational potential energy falls and its kinetic energy increases.

Hence, as the cart reaches the top, it slows down because it loses kinetic energy and gains potential energy.

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