If a piece of wood is suspected to be several thousand years old, its true age can likely be determined through use of the isotope _________

Fill in the blank(s) with correct word


carbon-14

Physics & Space Science

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An athlete participates in an interplanetary discus throw competition during an Olympiad that takes place on a planet where the free-fall acceleration is 9.7 m/s2

He throws the discus with an initial velocity of 20 m/s at an angle of 60° from the vertical. Neglecting air resistance and the height of the discus at the point of release, what is the range of the discus? A) 21 m B) 60 m C) 36 m D) 40 m E) 32 m

Physics & Space Science

A current may be induced in a coil by

a. moving one end of a bar magnet through the coil. b. moving the coil toward one end of the bar magnet. c. holding the coil near a second coil while the electric current in the second coil is increasing. d. all of the above. e. none of the above.

Physics & Space Science

The most striking valley in the solar system is:

A) the Grand Canyon in Arizona. B) Gwenivere on Venus. C) the Discovery Scarp of Mercury. D) Valles Marineris on Mars. E) Valhalla on Callisto.

Physics & Space Science

A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance further apart. Does E between the plates increase, decrease, or stay the same?

1.increase 2.decrease 3.remains the same

Physics & Space Science