(a) An amplitude modulated (AM) DSBFC signal, VAM can be expressed as follows: Vm 2 where, (i) (ii) Vm VAM = Vc sin(2лft) + сos 2лt (fc-fm) 2 (iii) Vc = amplitude of the carrier signal, Vm= amplitude of the modulating signal, fc = frequency of the carrier signal and, fm = frequency of the modulating signal. cos 2πt (fc + fm) Suggest a suitable amplitude for the carrier and the modulating signal respectively to achieve 70 percent modulation. If the upper side frequency of the AM signal is 1.605 MHz, what is the possible value of the carrier frequency and the modulating frequency? Based on your answers in Q1(a)(i) and Q1(a)(ii), rewrite the expression of the AM signal and sketch the frequency spectrum complete with labels.

Answer: the surface shear stress at x =1m from the leading edge of the plate is 4.1973 N/m²

Explanation:

Given that;

density s = 1.16 kg/m³

velocity = u = 50 m/s

kinetic viscosity r = 15.89 × 10⁻⁶ m²/s

xL = 1m from the leading edge of the plate

Now Reynold number (Rex)

Rex = UxL / r

Rex = (50 m/s × 1m ) / 15.89 × 10⁻⁶ m²/s

Rex = 3146633.1025

since Rex is greater than 5×10⁵ { Turbulent flow }

so Local skin friction coefficient

⇒ Cfx = 0.0577 / (Rex)^1/5

Cfx = 0.0577 / (3146633.1025)^1/5

Cfx = 0.0028947

Now Shear stress (y)

y = Cfx × 1/2 × su²

y = 0.0028947 × 1/2 × 1.16 × (50)²

y = 4.1973 N/m²

∴ the surface shear stress at x =1m from the leading edge of the plate is 4.1973 N/m²

The wires at positions A and B support a pin with a diameter of d from which the tube hangs. A hollowed square with an inner dimension of 8.5 inches makes up the cross section.

In mathematics, a dimension is the length or width of an area, region, or region in one direction. It is just the measurement of an object's length, width, and height. In general, dimensions are written as follows: length, breadth.

We exist in a three-dimensional universe. The homes we live in and the items we use on a daily basis all have three components: length, length, and width.

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Answer: total heat dissipated from the array is 0.60 Watt

Explanation:

No. of fins 8

Given that:

Wdth (b) = 3 mm = 0.003 m

thickness (t) = 0.4 mm = 0.0004 m

length (L) = 40 mm

combined convection and radiation heat transfer coefficient to be = 8.0 W/m² K.

Tb = 340 K, Tw = 300 K

First we compute for area of  fins A = 0.003 m × 0.00004 = 1.2 × 10⁻⁶ m²

Perimeter of Fin P = 2( 0.003 m + 0.00004 m ) = 0.0068 = 6.8 × 10⁻³  

for 2024 T6 aluminium alloy K = 151 W/m-k from table

Now

m = √ ( hp/ka) = √[( 8 × 6.8 × 10⁻³  ) / (151 × 1.2 × 10⁻⁶ m²)] = 17.327

Lc = L + t/2 = 40 + 0.4/2 = 40.2 mm = 40.2 × 10⁻³

Now heat transfer from on fin :

Q = √( hpKA) × (Tb-Tw) × Tanh(mLc)

= √( 8×6.8 × 10⁻³×151×1.2 × 10⁻⁶) × (340-300) × tanh (0.6965)

= 3.13963 × 40 × 0.602144

= 0.075620 Watt

So total heat dissipated from array of 8 fins = 8 ×0.075620 = 0.60 Watt

Answer:

Time required = 287.2 secs  

Explanation:

Volume  of room = 25 * 10 * 4 = 1000 m^3

power consumed by pump = 15 kW

T1 ( initial temperature ) = 12°C

P1 ( Initial pressure ) = 1 bar

COPhp = 3

Calculate time taken to raise room Temp to 27°C

average heat supplied ( ∅ ) = COPhp * power consumed by pump

                                             = 3 * 15 = 45 kW

Time required can be calculated using the relation below

∅t = P*V*Cv ( T2 - T1 )   [ p = 1.2 kg/m^3 , Cv = 0.718 KJ/kg ( air properties ) ]

45 * 10^3 ( t )  = 1.2*1000* 718 ( 27 - 12 )

∴ solving for t

t = 287.2 secs  ≈ 4.79 mins

Answer:

C) a winding connected in series with the armature.

Explanation:

In a series motor, an electromagnet is used as a stator to generate its magnetic field. The field coil of this stator are connected through a commutator in series with the rotor windings. This stator which is the armature windings will conduct AC even on a DC machine, due to the  periodically reverses current direction (commutation) or due to electronic commutation (as in brushless DC motors).

The military action that involves the use of electromagnetic and directed energy is defined as Electronic Warfare (EW).

Electronic Warfare (EW) refers to military action that uses electromagnetic energy to determine, exploit, impede, or sabotage hostile use of the electromagnetic spectrum and direct energy to deny adversaries the ability to operate effectively.

It involves a wide range of military operations, including electronic intelligence collection, electronic jamming, radar jamming, infrared countermeasures, and high-powered microwave weapons. It may also include cyber warfare, which is the utilization of digital technology to conduct military operations or gain a tactical advantage.

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The C/N is based on two equations of received signal power and noise power.

A link budget is a way of accounting for all of the gains and losses that a signal experiences as it travels along a communication path, from the transmitter to the receiver. The link budget calculations are performed by evaluating all of the different gain and loss factors of the signal as it passes from the transmitter to the receiver.

C/N stands for carrier-to-noise power ratio, which is a measure of the signal strength compared to the background noise. To calculate the C/N, the power of the signal is divided by the power of the noise. The C/N can be found by using the following formula: C/N = P(signal) / P(noise)In the C-Band GEO satellite link budget given, the C/N can be calculated by finding the received signal power and the noise power.

The received signal power can be calculated using the following formula: Pr = Pt + Gt - Lp - Ls - Grwhere Pr is the received signal power, Pt is the transmitted power, Gt is the transmitter antenna gain, Lp is the path loss, Ls is the space loss, and Gr is the receiver antenna gain.

The noise power can be calculated using the following formula: N = kTBwhere N is the noise power, k is Boltzmann's constant, T is the temperature, and B is the bandwidth.

Overall, the C/N of a satellite link is a critical parameter that determines the quality of the signal and the overall performance of the communication system. The calculation of the C/N is based on two equations of received signal power and noise power.

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The power absorbed by the electric heater is;

P = 660 Watts

We are given;

Current; I = 6 A

Voltage; V = 110 V

Now, we want to find the power that is absorbed by the electric heater.

The formula for electric power is;

P = IV

Where;

I is current

I is current V is voltage

Thus:

P = 6 × 110

P = 660 Watts

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Answer:

Can I be it plzzzzz!?

Explanation:

I need points

The differential height between the two pipe sections is 0.05m

The differential height of water between the two pipe sections can be calculated using the following equation:

h = (Q²*(ρ₂-ρ₁)/(A*g)) * (P₂-P₁)

where

h = differential height of water (m)

Q = volumetric flow rate (L/s)

ρ = density of air (kg/m3)

A = cross sectional area of pipe (m2)

g = gravitational acceleration (9.81 m/s2)

P = pressure (Pa)

Substituting the given values in the equation we get,

h = (200*(1.19-1.20)/(π*(0.1)2*9.81)) * (30-25)

h = 0.05 m

Hence, the differential height of water between the two pipe sections is 0.05 m.

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Answer:

Tech A

Explanation:

Becuz A is very good

Tech A and B say about a torsion bar that in the neutral position, the pressure in the power steering system is very high. Tech A is correct. The correct option is A.

The torsion bar is one such bar that possesses the tendency to return to its normal and original position when it is twisted firmly back. They cannot be controlled with the help of frames that are there between the lower control arms of the bar.

Torsion bars are such bars that do not have the characteristics of getting attached between the lower control armed frames. The common spring configurations on SLA systems, surprisingly, comprise a torsion bar, between the control arms, and on the upper control arm, according to the context of this subject. These all have some distinctive qualities that set them apart from one another.

Therefore, the correct option is A. Tech A.

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1a. (∀x)(∀y)((person(x) ∧ person(y) ∧ taller(x, y)) → (tall(x) ∧ short(y)))

1b. (∃x)(tall(x) ∧ (∀y)(short(y) → taller(x, y)))

1c.

Proof:

Step 1:

Assume (person(s) ∧ person(t) ∧ short(s) ∧ tall(t))

Step 2:

From Step 1, we know that (person(s) ∧ person(t) ∧ short(s) ∧ tall(t)) is true.

Step 3:

Assume ¬ taller(s, t) is false, i.e. taller(s, t) is true.

Step 4:

From Step 3, taller(s, t) is true, which contradicts the assumption in (1c) that ¬ ∃s ∃t [person(s) ∧ person(t) ∧ short(s) ∧ tall(t) ∧ taller(s, t)].

Step 5:

From Step 4, it follows that ¬ taller(s, t) must be true, i.e. (person(s) ∧ person(t) ∧ short(s) ∧ tall(t)) → ¬ taller(s, t) is true.

Step 6:

Since Step 5 holds for any s and t that satisfy (person(s) ∧ person(t) ∧ short(s) ∧ tall(t)), it follows that

(∀s)(∀t)((person(s) ∧ person(t) ∧ short(s) ∧ tall(t)) → ¬ taller(s, t)) is true.

Hence, the proof is complete.

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Answer:

wood or metal

Explanation:

sorry if incorrect

The common sense circuit. noun. a digital circuit utilized in computer systems to carry out a logical operation on its  or extra enter signals. There are six simple circuits, the AND, NOT, NAND, OR, NOR, and unique OR circuits, which may be blended into extra complicated circuits.

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Explanation:

The paths of warmth and job interactions are inverted by repeating the Carnot process. A Carnot fridge or a Carnot heating system is considered a fridge or heat engine that acts on the reverse Carnot cycle.

The Carnot process comprises liquid phase mixture compression and expanding, which limits mechanical components.

When it comes to combining multiple documents, an important word processing skill to know that ensures the final result is organized and easy to use is pagination.

Pagination is a page numbering technique that is done sequentially. These page numbers are usually located at the top or bottom of the web page. In most cases, it is used for main pages and partitions in corporate websites. This kind of design can generally make the user experience simpler on the site. They can also feel more comfortable when it comes to distributing and navigating products within the website.

For example, like this, imagine an e-commerce site that consists of hundreds of product catalogs from various categories. Of course, these products will not be found easily if only placed on one page. As a solution, UI developers and designers can take advantage of pagination to make product placement more structured.

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Defensive driving is an important skill that all drivers should practice. When driving, it's recommended that you scan about 12 to 15 seconds ahead of you to anticipate any potential hazards or obstacles that may be in your path.

This distance roughly equates to two or three blocks when driving in the city and 0.25 to 0.38 miles when driving at 60 mph on the highway. By scanning ahead and keeping a safe distance from other vehicles, you can reduce your risk of accidents and ensure a safer driving experience.

When driving in urban areas, this scanning distance roughly translates to two or three blocks. It allows you to spot pedestrians, cyclists, and other vehicles, as well as anticipate traffic flow and potential obstacles. On the highway, where speeds are higher, the scanning distance is approximately 0.25 to 0.38 miles when traveling at 60 mph. This allows you to identify upcoming exits, merge vehicles, and change traffic patterns.

By practicing this scanning technique and keeping a safe distance from other vehicles, you increase your awareness of your surroundings and give yourself more time to react. This reduces the likelihood of accidents and allows you to make informed decisions while driving. Defensive driving is an essential skill for all drivers to ensure their safety and the safety of others on the road.

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Answer:

D. Fire clay bricks

Explanation:

Just like in the steel mills with the big furnaces that's what causes all the smoke to come out of the stacks

Answer:

d is correct

Explanation:

Assuming that cell B5 contains the sales amount for the first salesperson, the IFS function to determine the commission rate in cell C5 is:

=IFS(B5>35000, 0.05, B5>25000, 0.04, B5>0, 0.02)

This formula checks the sales amount in B5 against each threshold amount in descending order (starting with $35,000), and returns the corresponding bonus rate if the sales amount is greater than that threshold. If the sales amount is less than or equal to zero, it returns a bonus rate of 0%.

To fill the formula down through cell C8, select cell C5 and drag the fill handle down to cell C8. This will copy the formula to the other cells in the group, adjusting the cell references as needed.

Answer:

rain

Explanation:

evaoration causes clouds

clouds condense and rain

Answer:

rain

Explanation:

Answer:

Tires or wheels? I think this is the answer. ^_^

Explanation:

Using the knowledge in computer language in python it is possible to write a code that relates the hours of paid work of an employee

Overtime pay

Input pay, rate

If rate =="Hourly" then

 print "Eligible for overtime"

Else if rate =="Monthly" then

 print "Not eligible for overtime"

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By bouncing signals off the ionised layer, the ionosphere reflects radio waves back to Earth, allowing for long-distance communication.

The ionosphere is an upper atmosphere layer with a high concentration of ions and free electrons. It is important in long-distance communication because it reflects and refracts radio waves back to Earth, allowing them to travel beyond the horizon and around the planet's curvature. Radio communication would be limited to a relatively short distance without the ionosphere, and long-distance communication would be impossible. The ionosphere is also responsible for GPS signal propagation, the formation of auroras, and the protection of the Earth from harmful solar radiation. However, the ionosphere can be disrupted by solar activity and man-made radio signals, resulting in interference and communication disruptions.

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option B is correct Consider a steady-flow mixing process. Under the conditions of no heat interaction between the mixing chamber and the surrounding medium, but work interaction occurs, the energy transported into the control volume by the incoming streams will be equal to the energy transported out of it by the outgoing stream.

A steady flow process is one in which the mass flow rate is constant and the energy is conserved. This means that any changes that occur inside the control volume will not change the mass flow rate or energy transport properties.Steady flow process is also known as a steady-state process. In simple words, it is a process in which the properties like temperature, pressure, and volume, etc. remain constant over a certain period of time.

In the mixing process, two or more fluids are combined to form a homogeneous mixture. In other words, a mixing process refers to the process in which two or more substances are combined to form a homogeneous mixture. The energy transported into the control volume by the incoming streams will be equal to the energy transported out of it by the outgoing stream under the conditions of no heat interaction between the mixing chamber and the surrounding medium, but work interaction occurs.

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Answer:

25 V, 50V, 75V respectively.

I hope it will be useful.

The size of the wrapper that TKIP places around the WEP encryption is A. 128-bit.

TKIP (Temporal Key Integrity Protocol) is a security protocol used in wireless networks to enhance the security of the outdated WEP (Wired Equivalent Privacy) encryption. TKIP introduces several improvements, including a larger key size and a more secure key management mechanism.

The size of the wrapper that TKIP places around the WEP encryption is 128-bit. This 128-bit wrapper is known as the TKIP Key Mixing function.

Here is a step-by-step explanation:

Step 1: TKIP uses a 128-bit key derived from a combination of the original WEP key and additional data, such as the MAC address and serial number of the packet.

Step 2: The TKIP Key Mixing function takes this 128-bit key and creates a 128-bit key stream.

Step 3: The key stream is then XORed (exclusive OR operation) with the plaintext data to produce the ciphertext.

Step 4: To enhance security, TKIP uses a different 128-bit key for each packet. This per-packet key is generated by combining the 128-bit key stream with a unique initialization vector (IV) for each packet.

Step 5: The resulting ciphertext, along with the IV, is transmitted over the wireless network.

By using a larger 128-bit key and per-packet keys, TKIP significantly improves the security of WEP by making it more difficult for attackers to crack the encryption. The additional data, such as the MAC address and serial number of the packet, adds uniqueness and randomness to the key generation process, making it harder for attackers to predict or exploit patterns in the encryption.

It's important to note that while TKIP provides better security than WEP, it has been largely superseded by the more robust WPA (Wi-Fi Protected Access) and WPA2 protocols, which use stronger encryption algorithms like AES (Advanced Encryption Standard).

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Pseudocode is sometimes used as a detailed step in the process of developing a program.

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Answer:

tapping, horizontal dusting, slash drilling

Explanation:

Answer:

yes

Explanation:

an idea could be a jack o lantern monster since it Halloween tomorrow