The intricate patterns visible in an X-ray image of the Sun generally show

A) helioseismological fluctuations.
B) a bubbling pattern on the photosphere.
C) extremely hot plasma flowing along magnetic field lines.
D) structure within sunspots.


C

Physics & Space Science

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Three particles are placed in the xy plane. A 30-g particle is located at (3, 4) m, and a 40-g particle is located at (-2, -2) m. Where must a 20-g particle be placed so that the center of mass of the three-particle system is at the origin?

a. (-3, -1) m b. (+1, +3) m c. (+3, -1) m d. (-1, -3) m e. (-0.5, -2) m

Physics & Space Science

An object can remain balanced if

A. Its mass is equally distributed B. Its center of gravity is to the right of the pivot points C. Its center of gravity is to the left of the pivot point D. Its center of gravity is over the pivot point

Physics & Space Science

Isotropy is the observation that, in its general properties, the Universe looks different in every direction

Indicate whether the statement is true or false

Physics & Space Science

Protons are being accelerated in a particle accelerator. When the speed of the protons is doubled, their de Broglie wavelength will

A) increase by a factor of 4. B) increase by a factor of 2. C) decrease by a factor of 2. D) increase by a factor of . E) decrease by a factor of .

Physics & Space Science