Solve the System to Find $$W _ { 1 } \text { and } W _ { 2 }$$

question 185

Multiple Choice

Solve the system to find $$W _ { 1 } \text { and } W _ { 2 }$$
-Linear systems occur in the design of roof trusses for new homes and buildings. The simplest type 223) of roof truss is a triangle. The truss shown in the figure is used to frame roofs of small buildings. If
A force of 116 pounds is applied at the peak of the truss, then the forces or weight $$\mathrm { W } _ { 1 } \text { and } \mathrm { W } _ { 2 }$$ exerted parallel to each rafter of the truss are determined by the following linear system of equations.

$$\begin{array} { l } \frac { \sqrt { 3 } } { 2 } \left( W _ { 1 } + W _ { 2 } \right) = 116 \\W _ { 1 } - W _ { 2 } = 0\end{array}$$

• A) \(W _ { 1 } = 66.97 \mathrm { lb } ; W _ { 2 } = 66.97 \mathrm { lb }\)
• B) \(\mathrm { W } _ { 1 } = 38.67 \mathrm { lb } ; \mathrm { W } _ { 2 } = 38.67 \mathrm { lb }\)
• C) \(W _ { 1 } = - 66.97 \mathrm { lb } ; W _ { 2 } = - 66.97 \mathrm { lb }\)
• D) \(\mathrm { W } _ { 1 } = 66.97 \mathrm { lb } ; \mathrm { W } _ { 2 } = 58 \mathrm { lb }\)

Describe different perspectives on intelligence (unitary vs. multiple abilities).

Explain the hierarchical model of intelligence.

Define fluid and crystallized intelligence and their differences.

Understand the use of factor analysis in intelligence research.

---

Definitions:

Third Trimester

The final stage of pregnancy, spanning from week 28 to birth, characterized by significant fetal growth and bodily changes in preparation for childbirth.

Miscarriage

is the spontaneous loss of a pregnancy before the fetus is able to survive outside the womb, typically before 20 weeks of gestation.

Orgasm

A peak of sexual pleasure characterized by a series of rhythmic contractions of the genital organs, often accompanied by the ejaculation of semen in men and vaginal contractions in women.

Trimester

One of the three divisions of the duration of a pregnancy, typically lasting around three months, used to mark specific developmental milestones.