Gas centrifuge technology is an emerging technology. The technology enriches mined uranium to levels at which it can be used to generate nuclear power. The use of centrifuges increases the concentration of the isotope uranium-235 in the uranium. Research the various applications of gas centrifuge technology. How has it affected the efficiency of energy production?

A sprinter accelerates at a constant rate of $4.8 \mathrm{~m} / \mathrm{s}^2$ during the first $10.0 \mathrm{~m}$ of a $100.0 \mathrm{~m}$ event. Determine the runner's speed at the end of the first $10.0 \mathrm{~m}$ of the race.

Research the effects of the Coriolis force in meteorology. In your own words, describe the effect using the movement of a hurricane as an example.

Research the history of roller coasters, showing how the designs have changed over the centuries. Present your findings in a timeline, on paper, as a Wiki page, as an electronic slide presentation, or in another format of your choosing.

A race car begins accelerating at a constant rate. In $25 \mathrm{~s}$, the race car travels $7.8 \times 10^2 \mathrm{~m}$. Determine the magnitude of the acceleration.

A ship travelling at $39.0 \mathrm{~km} / \mathrm{h}[\mathrm{N}]$ across the St. Lawrence Seaway encounters a current of $13.0 \mathrm{~km} / \mathrm{h}\left[\mathrm{E} 50.0^{\circ} \mathrm{N}\right]$. What is the velocity of the ship with respect to the shore? (a) $48.4 \mathrm{~km} / \mathrm{h}\left[\mathrm{E} 78.1^{\circ} \mathrm{N}\right]$ (b) $48.4 \mathrm{~km} / \mathrm{h}\left[\mathrm{E} 11.9^{\circ} \mathrm{N}\right]$ (c) $49.7 \mathrm{~km} / \mathrm{h}\left[\mathrm{E} 80.3^{\circ} \mathrm{N}\right]$ (d) $49.7 \mathrm{~km} / \mathrm{h}\left[\mathrm{E} 9.7^{\circ} \mathrm{N}\right]$

Suppose that the government increases taxes and government purchases by equal amounts. What happens to the interest rate and investment in response to this balanced-budget change? Explain how your answer depends on the marginal propensity to consume.

An amusement park ride moving down with a constant velocity is an example of a non-inertial frame of reference.

When will a bathroom scale with nothing on it read zero? (a) on the ground (b) in an elevator moving up (c) in an elevator moving down (d) in space

An astronaut with a mass of $65 \mathrm{~kg}$ is in a rotating space station with a radius of $150 \mathrm{~m}$. She stands on a scale, and the reading is $540 \mathrm{~N}$. (a) At what acceleration do objects fall when dropped near the floor of the space station? (b) Calculate the speed of rotation of the outer rim of the space station. (c) Calculate the period of rotation of the space station.

Which of the following describes a situation explained by Newton's third law? (a) a person pushes left on a wall while the wall pushes right on a person (b) clothes in a washing machine moving to the edge of the drum during the spin cycle (c) a spacecraft moving far from any massive bodies (d) a car accelerating forward by an amount equal to the ratio of the net forward force and the mass of the car

The centripetal acceleration of a car moving around a circular curve at a constant speed of $22 \mathrm{~m} / \mathrm{s}$ has a magnitude of $7.8 \mathrm{~m} / \mathrm{s}^2$. Calculate the radius of the curve.

A vintage sports car accelerates down a hill at an angle of $17^{\circ}$ to the ground figure mentioned. The driver notices that the string of ornamental fuzzy dice hanging from his rear-view mirror is perpendicular to the roof of the car. (a) Draw an FBD of the dice from the frame of reference of the level ground, both when the car is at rest on the hill and when it is accelerating. Explain how the two FBDs differ. (b) Calculate the car's acceleration.

An economy has 100 people divided among the following groups: 25 have full-time jobs, 20 have one part-job, 5 have two part-time jobs, 10 would like to work and are looking for jobs, 10 would like to work but are so discouraged the have given up looking, 10 are running their own businesses, 10 are retired, and 10 are small children.

Calculate the labor force and the labor-force participation rate.