The mass of a physics textbook is $3.40 \mathrm{~kg}$. You pick the book up off a table and lift it $0.470 \mathrm{~m}$ at a constant speed of $0.270 \mathrm{~m} / \mathrm{s}$. a) What is the work done by gravity on the book?

The table gives the life expectancy of a child born in the United States in a given year.

a. Make a scatter plot of the data. b. Use the data to predict the life expectancy of a baby born in 2023. Round to the nearest tenth. Does your answer follow the trend of the data? Explain. c. Explain any assumptions you made when using the line of fit to extrapolate and find the life expectancy of a baby born in 2023?

a) Outline a method for the measurement of the half-life of a radioactive isotope having a half-life of approximately $10^9$ years. b) A radioactive isotope has a half-life $T_{1 / 2}$. Determine the fraction of this isotope that remains in a particular sample of the isotope after a time of $1.6 T_{1 / 2}$. 1 Explain what is meant by an inertial frame of reference.

How did the Industrial Revolution change the economy and way of life?

Planck’s constant is an important unit of measure in quantum physics. It describes the relationship between energy and frequency. The constant is written as $6.62606957 \times 10^{-34}.$ Write Planck’s constant in standard notation.

Determine the kinetic energy in $\mathrm{MeV}$ of a neutron with a measured life span of $2065 \mathrm{~s}$, given its rest energy is $939.6$ $\mathrm{MeV}$, and rest life span is $900 \mathrm{~s}$.

While driving his motorcycle at highway speed, a physics student notices that pulling back lightly on the right handlebar tips the cycle to the left and produces a left turn. Explain why this happens.

Comment on each of the following assertions about skiing. $(a)$ In downhill racing, one wants skis that do not turn easily. $(b)$ In slalom racing, one wants skis that turn easily. $(c)$ There- fore, the rotational inertia of downhill skis should be larger than that of slalom skis. $(d)$ Considering that there is low fric- tion between skis and snow, how does a skier exert torques to turn or stop a turn? $($See “The Physics of Ski Turns,” by J. I. Shonie and D. L. Mordick, $\it{The~ Physics~ Teacher}$, December $1972$, p. $491$.$)$

Explain one use of the product life cycle to a car manufacturer.

Identify three kinds of relationships you have in your life.

Physics On the first swing, a pendulum swings through an arc of length $40 \mathrm{~cm}$. On each successive swing, the length of the arc is $85 \%$ of the length of the previous swing.

Write a rule to model this situation.

Socrates experienced bitter injustice in his own life. Yet he says that "no evil can happen to a good man, either in life or after death". How do you explain this apparent contradiction?

People unenlightened about physics sometimes fire a gun straight up into the air to celebrate big events. By discussing the forms of energy at each stage of the process, explain why this is a bad idea.

Thermometers in a physics lab often use gas rather than mercury. Whereas changes in volume indicate temperature in a mercury thermometer, what changes in a gas do you think indicate temperature in a gas thermometer?