An airplane flies horizontally with a speed of 300 m/s at an altitude of 400 m. Assume that the ground is level. At what horizontal distance from a target must the pilot release a bomb so as to hit the target?

A. 3.0 km
B. 2.4 km
C. 3.3 km
D. 2.7 km
E. 1.7 km


Answer: D

Physics & Space Science

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a. sundial b. protractor c. declination d. right ascension

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The celestial equator is

a. a line around the sky directly above Earth's equator. b. the dividing line between the north and south celestial hemispheres. c. the path that the Sun appears to follow on the celestial sphere as Earth orbits the Sun. d. a line around the sky directly above the Earth's equator and the dividing line between the north and south celestial hemispheres. e. a line around the sky directly above Earth's equator and the dividing line between the north and south celestial hemispheres.

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A filtergram is a photograph of the Sun's surface made

a. in a band of wavelengths in the infrared. b. in a band of wavelengths in the ultraviolet. c. using the Zeeman effect. d. with only those photons emitted in a specific spectral line. e. none of the others.

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The figure shows the ______ and _____ Moon phases



a.
crescent; first-quarter

b.
new; new

c.
crescent; full

d.
first-quarter; full

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