A statue that is 2.3 cm tall is placed 15 cm in front of a convex mirror. The magnitude of the radius of curvature of the mirror is 18 cm

(a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How tall is the image?


(a) virtual (b) 5.6 cm (c) upright (d) 0.86 cm

Physics & Space Science

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As the planets orbit the Sun, they are never far from the ________ on the celestial sphere.

A. horizon B. meridian C. celestial equator D. celestial pole E. ecliptic

Physics & Space Science

Answer the following statement(s) true (T) or false (F)

1.When a baseball pitcher throws a curveball, he or she puts top-spin on the ball. This causes the ball to interact with the passing air in such a way as to make the air push the ball downward perpendicular to the ball’s velocity. (This causes the ball to dive sharply as it approaches the plate, making it quite difficult to hit.) We would classify this force as a “lift” force on the ball.

Physics & Space Science

Atomic bomb tests demonstrated which aspect of star formation?

A) A shock wave surrounding and compressing a molecular cloud. B) The ignition of fusion that changes a protostar to a star. C) A protostar's movement on the Hayashi track. D) The fragmentation of a molecular cloud. E) A shock wave pushing a molecular cloud from one side.

Physics & Space Science

A beam of light of wavelength 600 nm is incident normally on a grating with a spacing between slits of 1.70 × 10-4 cm. At what angle away from the centerline does a first-order maximum occur?

A) 10.5° B) 12.1° C) 16.4° D) 18.2° E) 20.7°

Physics & Space Science