If $\mathrm{m}=125 \mathrm{~kg}, \mathrm{~h}=700 \mathrm{~mm}$, and the constant in each spring is $k=2.8 \mathrm{~kN} / \mathrm{m}$, determine the range of values of the distance $d$ for which the equilibrium of $AB$ is stable in the position shown. Each spring can act in either tension or compression.

In a circus act a tiger is required to jump from point A to point C so that it goes through the ring of fire at B. Determine the tiger’s initial velocity if the ring of fire is placed at a distance d = 5.5 m from A. Furthermore, determine the slope of the tiger’s trajectory as the tiger goes through the ring of fire.

To make a compass, point an ordinary iron nail along the direction of Earth’s magnetic field (which, in the Northern Hemisphere, is angled downward as well as northward) and repeatedly strike it for a few seconds with a hammer or a rock. Then suspend it at its center of gravity by a string. Why does the act of striking magnetize the nail?

Which of the following is an example of checks and balances at work in the United States government?

A. The national and state governments share power.
B. Congress is separated into two houses, the Senate and the House of Representatives.
C. The president can veto, or reject, an act of Congress.
D. Representatives to Congress are elected by a vote of the people.

(a) The springs of a pickup truck act like a single spring with a force constant of $1.30 \times 10^5 \mathrm{~N} / \mathrm{m}$. By how much will the truck be depressed by its maximum load of $1000 \mathrm{~kg}$ ? (b) If the pickup truck has four identical springs. what is the force constant of each?

Many people favor deregulation, arguing that competition in a free market is enough to keep firms in line. They believe that consumers will avoid firms that act unfairly and force them to correct their ways or go out of business. Do you agree? Are there situations where the government needs to regulate an industry? Explain.

To what extent does experience determine what we perceive? (a) Give two examples of situations in which Brutus expects others to act honorably and they fail to do so. (b) What is the outcome of each situation? (c) What do these situations suggest about Brutus" "'new of himself and the world?

(a) The springs of a pickup truck act like a single spring with a force constant of $1.30 \times 10^{5} \mathrm{N} / \mathrm{m}.$ By how much will the truck be depressed by its maximum load of 1000 kg? (b) If the pickup truck has four identical springs, what is the force constant of each?

Choose the word that best completes item and write it in the space provided. The _____ of high-wire walkers never fails to astonish me. How in the world can they act relaxed and unconcerned when they're on a skinny wire hundreds of feet in the air? A. nonchalance B. decadence C. brevity D. torpor

Tan describes situations in which she was forced to act as a go-between for her mother, as in the anecdote in lines 80-91. Describe the roles of Tan and her mother in these situations. In what ways do these interactions differ from the typical mother-daughter relationship? Be specific in your answer.

The critic Geoffrey Thurley considers "What I Expected" to be one of Spender's best poems. He says that Spender conceived the poem "as an act, rather than as a statement" and that for this reason the reader "experiences the poem." Explain what you think Thurley means and tell how you experienced the poem.

(a) What vivid image, typical of Elizabethan drama, does Shakespeare create when Macbeth says to Ross, "why do you dress me I In borrowed robes?" (Act I, Scene iii, lines 108-109)?
(b) What uneasiness in Macbeth does this word picture reveal?

“Monday morning quarterbacks” rarely act surprised about the outcome of weekend football games. This tendency to believe they knew how the game would turn out is best explained by which psychological principle? a. Overconfidence. b. Hindsight bias. c. Intuition. d. Illusory correlation. e. Random sampling.

What role do you suppose hysteria plays in the following situations? Cite specific evidence from Act Three.

• Mary's inability to faint on command (lines 736-759)
• Danforth's belief in the girls (lines 1030-1039)
• the change in Mary's testimony (lines 1113-1138)