What did the Martian surface look like from the Viking lander sites?

A) a dry, dusty, boulder-strewn desert
B) a huge canyon stretching out to the horizon
C) flat, dark volcanic rocks out to the horizon
D) very mountainous with huge volcanoes in the distance


A

Physics & Space Science

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The amount of gravitational force that acts on a space vehicle while in Earth orbit is

A) nearly zero. B) nearly as much as the vehicle's weight on Earth's surface. C) the same as the vehicle's weight on Earth's surface.

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A gravitationally bound universe, with omega greater than 1.0, will expand forever

Indicate whether the statement is true or false

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A charged particle moves in a region of uniform magnetic field along a helical path (radius = 5.0 cm, pitch = 12 cm, period = 5.0 ms). What is the speed of this particle as it moves along this path?

A. 67 m/s B. 26 m/s C. 63 m/s D. 24 m/s E. 87 m/s

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The spectrum of radio galaxies indicates the energy is in ________ radiation

Fill in the blank(s) with correct word

Physics & Space Science