Suppose you are standing on a train accelerating at $0.20 \mathrm{~g}$. What minimum coefficient of static friction must exist between your feet and the floor if you are not to slide?

Select the key term that corresponds to each of the following definitions.

a shorthand representation using atomic notation to describe a nuclear reaction

(a) activity (Sec. 18.4) (b) alpha particle $(\alpha)$ (Sec. 18.1) (c) atomic number (Z) (Sec. 18.2) (d) beta particle $\left(\beta^{-}\right)$ (Sec. 18.1) (e) chain reaction (Sec. 18.7) (f) critical mass (Sec. 18.7) (g) deuterium (Sec. 18.8) (h) electron capture (EC) (Sec. 18.2) (i) gamma ray $(\gamma)(\operatorname{Sec} .18 .1)$ (j) half-life $\left(t_{1 / 2}\right)$ (Sec. 18.4) (k) mass number (A) (Sec. 18.2) (l) nuclear equation (Sec. 18.2) (m) nuclear fission (Sec. 18.7) (n) nuclear fusion (Sec. 18.8) (o) nuclear reaction (Sec. 18.2) (p) nuclide (Sec. 18.2) (q) parent-daughter nuclides (Sec. 18.3) (r) positron $\left(\beta^{+}\right)(\operatorname{Sec} .18 .2)$ (s) radioactive decay series (Sec. 18.3) (t) radioactivity (Sec. 18.1) (u) radionuclide (Sec. 18.5) (v) transmutation (Sec. 18.6) (w) tritium (Sec. 18.8)

Blake Knudson owns and operates Grab Bag Delivery Services. On January 1, 2013, Retained Earnings had a balance of $918,000. During the year, no additional capital stock was issued and$15,000 of dividends were paid. For the year ended December 31, 2013, Grab Bag Delivery Services reported a net loss of $43,500. Prepare a retained earnings statement for the year ended December 31, 2013.

The coefficient of static friction between hard rubber and normal street pavement is about 0.8. On how steep a hill (maximum angle) can you leave a car parked?

A bag contains 3 red, 4 yellow and 8 green sweets. You Jin chooses one sweet out of the bag at random and eats it. She then takes out a second sweet. a. Write down the probability that the first sweet chosen was red. b. Given that the first sweet was not red, find the probability that the second sweet is red. c. Find the probability that both the first and second sweets chosen were yellow.

A 97-kg sprinter wishes to accelerate from rest to a speed of 13 m/s in a distance of 22 m. What coefficient of static friction is required between the sprinter's shoes and the track?

Select the key term that corresponds to each of the following definitions.

a nuclear reaction in which two light nuclei combine into a single nucleus

(a) activity (Sec. 18.4) (b) alpha particle $(\alpha)$ (Sec. 18.1) (c) atomic number (Z) (Sec. 18.2) (d) beta particle $\left(\beta^{-}\right)$ (Sec. 18.1) (e) chain reaction (Sec. 18.7) (f) critical mass (Sec. 18.7) (g) deuterium (Sec. 18.8) (h) electron capture (EC) (Sec. 18.2) (i) gamma ray $(\gamma)(\operatorname{Sec} .18 .1)$ (j) half-life $\left(t_{1 / 2}\right)$ (Sec. 18.4) (k) mass number (A) (Sec. 18.2) (1) nuclear equation (Sec. 18.2) (m) nuclear fission (Sec. 18.7) (n) nuclear fusion (Sec. 18.8) (o) nuclear reaction (Sec. 18.2) (p) nuclide (Sec. 18.2) (q) parent-daughter nuclides (Sec. 18.3) (r) positron $\left(\beta^{+}\right)(\operatorname{Sec} .18 .2)$ (s) radioactive decay series (Sec. 18.3) (t) radioactivity (Sec. 18.1) (u) radionuclide (Sec. 18.5) (v) transmutation (Sec. 18.6) (w) tritium (Sec. 18.8)

If the coefficient of static friction between the conical surface and the block is $\mu_s=0.2$, determine the maximum constant angular velocity $\dot{\theta}$ without causing the block to slide upwards.

Blake Knudson owns and operates Grab Bag Delivery Services. On January 1, 2013, Retained Earnings had a balance of $918,000. During the year, no additional capital stock was issued and$15,000 of dividends were paid. For the year ended December 31, 2013, Grab Bag Delivery Services reported a net loss of $43,500. Prepare a retained earnings statement for the year ended December 31, 2013

A seed is on a turntable rotating at 33 1/3 rev/min, $6.0 \text{~cm}$ from the rotation axis. What is the least coefficient of static friction to avoid slippage?

What is the minimum horizontal force $F$ needed to make the box start moving in the given figure? The coefficients of kinetic and static friction between the box and the floor are $0.27$ and $0.38$, respectively.

The table displays how many of each letter are in a bag. Find the odds in favor of C.

$$\begin{array}{|c|c|} \hline \text { Letter } & \begin{array}{c} \text { How Many } \\ \text { in Bag } \end{array} \\ \hline \text { A } & 5 \\ \hline \text { B } & 4 \\ \hline \text { C } & 6 \\ \hline \text { D } & 2 \\ \hline \text { E } & 8 \\ \hline \end{array}$$

The coefficient of static friction between a 40.0-kg picnic table and the ground below it is 0.43. What is the greatest horizontal force that could be exerted on the table while it remains stationary?

A force of $35.0 \mathrm{~N}$ is required to start a $4.0\,\mathrm{kg}$ box moving across a horizontal concrete floor. What is the coefficient of static friction between the box and the floor?