This removes an item at a specific index in a list.

a. The remove method

b. The delete method

c. The del statement

d. The kill method

As a football player moves in a straight line, an opponent exerts a constant force $(126 \mathrm{~N}) \hat{\imath}+(168 \mathrm{~N}) \hat{\jmath}$ on him. How much work does the football player do on the opponent?

The financial statements of a company are management's, not the accountant's. Discuss the implications of this statement.

The position of a car moving on a straight highway is given by

$$x=t^2-\frac{t^3}{90} m$$

where t is the time in seconds. Determine (a) the distance traveled by the car before it comes to a stop; and (b) the maximum velocity reached by the car.

Devise a rule for finding your distance in kilometers from a lightning flash by counting the seconds from the time you see the flash until you hear the thunder. Assume that the sound travels to you along a straight line.

Height velocity graphs are used by endocrinologists to follow the progress of children with growth deficiencies. The given figure shows the height velocity curves of an average boy and an average girl between ages 3 and 18.

(a) Which curve is for girls and which is for boys? Explain how you can tell.

(b) About how much does the average boy grow between ages 3 and 10 ?

(c) The growth spurt associated with adolescence and the onset of puberty occurs between ages 12 and 15 for the average boy and between ages 10 and 12.5 for the average girl. Estimate the height gained by each average child during this growth spurt.

(d) When fully grown, about how much taller is the average man than the average woman? (The average boy and girl are about the same height at age 3.)

Use the results of previous problems to evaluate $\oint_C(6 z+4) d z$ where $C$ is (a) the straight line from $1+i$ to $2+3 i$, and (b) the closed contour $x^4+y^4=4$.

This will happen if you try to use an index that is out of range for a list. a. A ValueError exception will occur. b. An IndexError exception will occur. c. The list will be erased and the program will continue to run. d. Nothing—the invalid index will be ignored.

The electric field at a distance of 0.01 m from a long straight wire is directed toward the wire and has a magnitude of $10^6 \mathrm{~N} \mathrm{C}^{-1}$. What is the charge per unit length on the wire?

During 2011, Crawford Furniture Company purchases a carload of wicker chairs. The manufacturer sells the chairs to Crawford for a lump sum of $60,000, because it is discontinuing manufacturing operations and wishes to dispose of its entire stock. Three types of chairs are included in the carload. The three types and the estimated selling price for each are listed below.

$$\begin{array}{|c|c|c|} \hline \text { Type } & \text { No. of Chairs } & \text { Estimated Selling Price Each } \\ \hline \text { Lounge chairs } & 400 & \$ 90 \\ \hline \text { Armchairs } & 300 & 80 \\ \hline \text { Straight chairs } & 800 & 50 \\ \hline \end{array}$$

During 2011, Crawford sells 200 lounge chairs, 100 armchairs, and 120 straight chairs.

What is the amount of gross profit realized during 2011? What is the amount of inventory of unsold straight chairs on December 31, 2011?

An athlete at the gym holds a 3.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of 3.8 kg, with the center of mass at 40% of the arm length from the shoulder.

Part A: What is the magnitude of the torque about his shoulder due to the weight of the ball and his arm if he holds his arm straight out to his side, parallel to the floor?

Part B: What is the magnitude of the torque about his shoulder due to the weight of the ball and his arm if he holds his arm straight, but 45° below horizontal?

Several years ago, Jenkins Company acquired a controlling interest in Lambert Company. Lambert recently borrowed $100,000 from Jenkins. In consolidating the financial records of these two companies, how will this debt be handled?

Find the slope of the straight line passing through

(a) $\mathrm{E}(-1,3)$ and $\mathrm{F}(3,11)$

(b) $\mathrm{E}(-1,3)$ and $\mathrm{G}(4,-2)$

(c) $\mathrm{E}(-1,3)$ and $\mathrm{H}(49,3)$

Starting from the rest and moving in a straight line, a cheetah can achieve a velocity of $V_2=31\:\dfrac{\text{m}} {\text{s}}$ during a period of $t_2=4\text{ s}$. What is the average acceleration of the cheetah?