Consider the beam shown in (Figure 1). E = 200 GPa and I = 78.9 Ã10â6m4. Determine the slope at A of the beam, measured counterclockwise from the positive x axis.Express your answer using three significant figures and include the appropriate units. Determine the deflection of end C. Express your answer using three significant figures and include the appropriate units. Enter positive value if the deflection is upward and negative value if the deflection is downward.

Answer:

a) The amount by which this specimen will elongate in the direction of the applied stress is 0.466 mm

b) The change in diameter of the specimen is  - 0.015 mm

Explanation:

Given the data  in the question;

(a) The amount by which this specimen will elongate in the direction of the applied stress.

First we find the area of the cross section of the specimen

A = \(\frac{\pi }{4}\) d²

our given diameter is 20.5 mm so we substitute

A = \(\frac{\pi }{4}\) ( 20.5 mm )²

A = 330.06 mm²

Next, we find the change in length of the specimen using young's modulus formula

E = σ/∈

E = P/A × L/ΔL

ΔL = PL/AE

P is force ( 46300 N), L is length ( 201 mm ), A is area ( 330.06 mm² ) and E is  elastic modulus (60.5 GPa) = 60.5 × 10⁹ N/m² = 60500 N/mm²

so we substitute

ΔL = (46300 N × 201 mm) / ( 330.06 mm² × 60500 N/mm² )

ΔL =  0.466 mm

Therefore, The amount by which this specimen will elongate in the direction of the applied stress is 0.466 mm

(b) The change in diameter of the specimen. Indicate an increase in diameter with a positive number and a decrease with a negative number.

Using the following relation for Poisson ratio

μ = -  Δd/d / ΔL/L

given that Poisson's ratio of the metal is 0.33

so we substitute

0.33 = -  Δd/20.5 / 0.466/201

0.33 = -  Δd201 / 20.5 × 0.466

0.33 = - Δd201  / 9.143

0.33 × 9.143 =  - Δd201

3.01719 = -Δd201

Δd = 3.01719 / - 201

Δd  = - 0.015 mm

Therefore, The change in diameter of the specimen is  - 0.015 mm

Answer:

D would be correct because it maximizes it.

The statement "the enormous gains in crop yields brought about by green revolution technologies may soon stop" is definitely true.

The green revolution may be defined as a type of revolution in which there would be a great increase in the production of food grains (such as rice and wheat) due to the introduction of high-yielding varieties, the use of pesticides, and better management techniques.

It started around the 1960s and helped in increasing food production in the country. The green revolution's primary aim was to introduce high-yielding varieties (HYVs) of cereals to alleviate poverty and malnutrition. They soon stop because they are not much efficient as pear present needs and conditions.

Therefore, the statement "the enormous gains in crop yields brought about by green revolution technologies may soon stop" is definitely true.

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Answer:

Amplifier gain is equal to 10.67.

Explanation:

Voltage gain of an amplifier can be expressed as this equation:

A_v = (V_output) / (V_input)

Where A_v is the gain, V_output is the output voltage, and V_input is the input voltage.

For this we will solve:

A_v = 128 mV / 12 mV

A_v = 10.67

So the amplifier's gain is 10.67.

Cheers.

The least cost input combination of producing a given output on an isoquant/isocost graph is given by the tangency between the isoquant curve and the isocost line. Therefore, the correct answer is c.

In economics, an isoquant represents all possible combinations of inputs that can produce a specific level of output. An isocost line, on the other hand, represents all combinations of inputs that can be purchased at a given cost. The least cost input combination occurs when the isoquant curve and the isocost line are tangent to each other.

At this point of tangency, the firm achieves the desired output level at the lowest possible cost, as it maximizes the use of inputs while staying within the budget constraint represented by the isocost line. Therefore, the tangency between the isoquant curve and the isocost line determines the least cost input combination.

Option C holds true.

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(a) The stacking sequence for the zinc blende crystal structure will be FCC (face-centered cubic). This is because the anions form close-packed planes in an FCC arrangement, and the cations occupy tetrahedral interstitial sites between these planes.

(b) The cations will fill tetrahedral positions. This is because each anion in the close-packed planes is surrounded by four cations that occupy the tetrahedral sites. The tetrahedral sites are located at the center of each tetrahedron formed by four anions, and each tetrahedron shares its four vertices with neighboring tetrahedra.(c) In the zinc blende crystal structure, each anion has four tetrahedral sites available for cation occupancy. Since each cation occupies one of these tetrahedral sites, the fraction of occupied positions will be equal to the number of cations divided by the total number of available tetrahedral sites. Therefore, the fraction of occupied positions will be 1/4 or 0.25.

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The number of nodes present in the given circuit is the number of points where two or more components are connected together.

The number of branches present in the given circuit is the number of individual paths between the nodes.

To further elaborate on the topic, nodes and branches are essential components of an electrical circuit, as they are essential for the flow of current throughout the circuit. Nodes represent the points in a circuit where two or more components are connected together, while branches represent the individual paths that the current can take between the nodes.

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If the true percentage is really 81%, the probability of observing 29 or more students who consider statistics to be an exciting subject is 0.014443. The correct option is b.

A branch of mathematics, statistics is a body of knowledge that deals with the gathering, examination, interpretation, and presentation of data.

The standard deviation is defined as the square root of variance. The standard deviation in binomial distribution is calculated by the given formula:

SD = √npq

n = 30 and p = 81 q = 29

√30 x 81 x 29 = 0.014443.

Therefore, the correct option is b) 0.014443.

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The question is incomplete. The missing options are given below:

a) 0.012646

b) 0.014443

c) 0.001797

d) 0.985557

The three most common software development methods are the Waterfall Approach, the Incremental Approach, and the SPIRAL Approach. These methods depend on the team size and specific goals.

Software development is the sequential procedure that involves the division of the work into smaller and parallel stages in order to improve software design and product management.

The software development methods depend on both the team size and specific objectives.

The most common methodologies for software development include:

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The amount of work done in stretching the spring from 9.0 cm to a length of 13.0 cm is 48 N.cm.

To find the amount of work done in stretching the spring from 9.0 cm to 13.0 cm, we need to first determine the spring constant (k) and then use the work formula for springs.
1. Calculate the change in length when 9.0 N weight is hung:
  ΔL₁ = 10.5 cm - 9.0 cm = 1.5 cm
2. Use Hooke's Law (F = k * ΔL) to find the spring constant (k):
  9.0 N = k * 1.5 cm
  k = 9.0 N / 1.5 cm = 6.0 N/cm
3. Determine the change in length for stretching the spring to 13.0 cm:
  ΔL₂ = 13.0 cm - 9.0 cm = 4.0 cm
4. Calculate the work done in stretching the spring using the work formula for springs (W = 0.5 * k * (ΔL₂)²):
  W = 0.5 * 6.0 N/cm * (4.0 cm)²
  W = 0.5 * 6.0 N/cm * 16 cm²
  W = 48 N.cm

The amount of work done in stretching the spring from 9.0 cm to a length of 13.0 cm is 48 N.cm.

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Military glorification through mosaics, relief carvings and triumphant arches are often associated with roman architectural monument and is the correct choice.

This can be defined as a structure which is usually large and is used to commemorate the history of an influential person. This helps to serve as an example and also a reminder as to why the performance of good deeds are important

The use of military glorification through mosaics, relief carvings and triumphant arches were also often used by the Romans in other to commemorate war victories and the succession of a new ruler which is known as the emperor.

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Answer:

Hydrostatic force = 41168 N

Explanation:

Complete question

A triangular plate with a base 5 ft and altitude 3 ft is submerged vertically in water  so that the top is 4 ft below the surface. If the base is in the surface of water, find the force against onr side of the plate. Express the hydrostatic force against one side of the plate as an integral and evaluate it. (Recall that the weight density of water is 62.5 lb/ft3.)

Let "x" be the side length submerged in water.

Then

w(x)/base = (4+3-x)/altitude

w(x)/5 = (4+3-x)/3

w(x) = 5* (7-x)/3

Hydrostatic force = 62.5 integration of  x * 4 * (10-x)/3 with limits from 4 to 7

HF = integration of 40x - 4x^2/3

HF = 20x^2 - 4x^3/9 with limit 4 to 7

HF = (20*7^2 - 4*7^(3/9))- (20*4^2 - 4*4^(3/9))

HF = 658.69 N *62.5 = 41168 N

The correct answer is The velocity head in the 6" pipe is 6.21 ft.

To calculate the velocity head in the 6" pipe, we need to use the equation:

Velocity head = (Velocity^2) / (2g)

Given that the 12" pipe is carrying 3.93 cubic feet per second (cfs), we can use the principle of continuity to determine the velocity in the 6" pipe. Since the flow is incompressible, the flow rate remains constant. By applying the equation Q = Av, where Q is the flow rate, A is the cross-sectional area, and v is the velocity, we can find the velocity in the 6" pipe. Once we have the velocity, we can substitute it into the velocity head equation to find the answer, which is 6.21 ft.

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Pre-digital period or analog era are the correct terms. Prior to the broad adoption of digital technology, particularly the internet, it refers to the time period and includes the dominating companies.

particular era's institutions, organizations, and procedures. Print, television, and radio are examples of traditional media, and traditional modes of social interaction and communication are also included. It is common to compare the pre-digital era to the internet era, which started in the late 20th century and is still shaping the globe today. In the United States, some instances of dominant groups today include: Comparing heterosexuals to LGBT+ (lesbian, gay, bisexual, transgender, and questioning) communities Black, Indigenous, and People of Color (BIPOC) groupings are contrasted with white racial groups. in comparison to men.

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The American society of civil engineering give us infrastructure in 2013 A grade of D

The overall score for America's infrastructure in all 16 categories is D+ in the 2013 Report Card, which is slightly higher than the D in ASCE's 2009 Report Card.

Six infrastructure sectors profited through increased private sector investment, focused initiatives in municipalities and states to perform renovations or repairs, or a one-time boost in government money.

Importantly, it is the first time the grades have increased since the American Society of Civil Engineers initially rated the quality of America's network in 1998. Nevertheless, a D+ rating remains unacceptable.

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Genetic algorithms B: develop solutions to particular problems using inheritance, crossover, and mutation, as well as C: represent knowledge as groups of characteristics, also they E: seek to emulate a human expert's way of solving problems.

Genetic algorithms are a problem-solving approach inspired by the process of natural selection in evolution. They work by generating a population of potential solutions represented as chromosomes with characteristics. These characteristics are combined through techniques like inheritance, crossover, and mutation to create new generations of solutions. T

he algorithm aims to improve the solutions over time through fitness evaluation and selection. Genetic algorithms are designed to simulate the process of evolution and mimic the problem-solving capabilities of human experts rather than being based on strict logic. Therefore, the correct answer is that genetic algorithms develop solutions to particular problems using inheritance, crossover, and mutation (Option B, C nad E).

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Code assumes that the inputs are binary values (either high or low), and that the PIC16F818 is powered and initialized properly.

To construct a 2-input XOR logic gate using the PIC16F818 microcontroller, we can use two input pins and one output pin. The logic for the XOR gate is that the output is high only when one of the inputs is high, but not both.

Here is an example code:

#define _XTAL_FREQ 4000000 // Define clock frequency for delay functions

#include <xc.h>

// Define input and output pins

#define IN1 RB0

#define IN2 RB1

#define OUT RB2

void main() {

   // Set input and output pin modes

   TRISB0 = 1; // Input pin 1

   TRISB1 = 1; // Input pin 2

   TRISB2 = 0; // Output pin

   // Infinite loop for checking input and updating output

   while(1) {

       // XOR logic

       if (IN1 != IN2) {

           OUT = 1; // Set output high

       } else {

           OUT = 0; // Set output low

       }

       __delay_ms(10); // Delay for stability

   }

}

In this code, we first define the input and output pins as RB0, RB1, and RB2 respectively. We set the input pins as input mode and the output pin as output mode. In the infinite loop, we check the inputs and update the output based on the XOR logic. We also add a delay for stability between input checks. This code assumes that the inputs are binary values (either high or low), and that the PIC16F818 is powered and initialized properly.

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Answer:

Cool I think u should do Marvel first

Answer:

c.Both A and B.

Explanation:

the wattage is c and d

A movement that I am familiar is  a religious movement known as Heavenly conscious movement and the things i want them to gain additional knowledge about a performance on:

A movement is known to be one that make use of  planning as well as unpredictability. The movement is one that is given identity, leadership, as well as  coordination by one or more organizations.

Therefore, A movement that I am familiar is  a religious movement known as Heavenly conscious movement and the things i want them to gain additional knowledge about a performance on:

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At Peak Engineering, Zara and Richard’s team must find the best metals to use in a robotic system. According to earth science, the MOST challenging part of their job is: "Many metals are too weak for heavy use" (Option A)

The study of the Earth's structure, qualities, operations, and four and a half billion years of biotic development is known as Earth science. Understanding these events is critical to the survival of life on Earth.

Earth science, often known as geology, encompasses all natural scientific disciplines concerned with the planet Earth. This is an area of study concerned with the physical, chemical, and biological complexity of Earth's four spheres, namely the biosphere, hydrosphere, atmosphere, and geosphere, as well as their synergistic interactions.

Earth sciences are disciplines that study the physical Earth, its seas, and the air that surrounds it. They comprise geologic, hydrologic, and atmospheric sciences, with the overarching goal of understanding Earth's current features and historical evolution and applying this knowledge to benefit humanity.

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Answer:

C, Materials on the planet are limited.

Explanation:

U8L11 "Unit 5 Quiz" for Engineering And Technology

Initially, it could just feel like gas pains, an upset stomach, or menstrual cramps. Within an hour or two, it can get so bad that you have trouble breathing or walking due to its continued escalation in intensity. The answer is \($2.20^* 10^{\wedge}-4 \mathrm{~cm}$\).

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In the radio communication system, multipath is the propagation phenomenon that causes diffusion or reflection in multiple different directions of a signal.

Multipath is a propagation mechanism that impacts the propagation of signals in radio communication. Multipath results in the transmission of data to the receiving antenna by two or more paths. Diffusion and reflection are the causes that create multiple paths for the signal to be delivered.

Diffraction occurs when a signal bends around sharp corners; while reflection occurs when a signal impinges on a smooth object. When a signal is received through more than one path because of the diffraction or reflection, it creates phase shifting and interference of the signal.

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The received power if the effective aperture area of the receiving antenna is 20 m2 is 177.77 m2.

In physics, power is referred to as the rate of energy conversion or transfer over time. The unit of power in the SI system, often known as the International System of Units, is the Watt (W). A single joule per second is one watt.

Power was formerly referred to as activity in some research. A scalar quantity is power. As power is always a function of labor done, it follows that if a person's output varies during the day depending on the time of day, so will his power.

A measure of the pace at which energy is transferred, power is a physical quantity. As a result, it can be described as the pace of job completion relative to time.

Therefore, The received power if the effective aperture area of the receiving antenna is 20 m2 is 177.77 m2.

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Answer:

Updated question

The big ben clock tower in London has clocks on all four sides. If each clock has a minute hand that is 11.5 feet in length, how far does the tip of each hand travel in 52 minutes?

The distance traveled by the tip of the minute hand of the clock would be 62.59 ft

Explanation:

Let us assume the shape of the clock is circular.

the minute hand is equal to the radius = 11.5 ft

Diameter = radius x 2

Diameter = 11.5 x 2 = 23 ft

The distance traveled by the tip of the minute hand can be calculated thus;

the fraction of the circumference traveled by the minute hand would be;

52/60 = 0.8667

Circumference of the clock would be;

C = pi x d

where C is the circumference

pi is a constant

d is the diameter

C = 3.14 x 23

C = 72.22 ft

Therefore the fraction of the circumference covered by the minute hand would be;

72.22 ft x 0.8667 = 62.59 ft

Therefore the distance traveled by the tip of the minute hand of the clock would be 62.59 ft