The satellite that found the ripples in the cosmic background that led to galaxies is
A) COBE.
B) the Hubble Space Telescope.
C) SOHO.
D) the Chandra X-Ray Observatory.
E) the Compton Gamma Ray Observatory.
A
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The planet with the polar "ice caps" of frozen carbon dioxide is ______________
Fill in the blank(s) with correct word
You are designing an ac generator with a maximum emf of 8.0 V. If the generator coil has 200 turns, each with a cross-sectional area of 0.030 m2, what should be the frequency of the generator in a magnetic field of 0.030 T?
A) 7.1 Hz B) 7.5 Hz C) 8.0 Hz D) 44 Hz
Magnetic confinement is used in controlled fusion experiments to
a. provide neutrons b. accelerate nuclei c. control a plasma d. excite nuclei into higher energy levels e. inject energy into nuclei
Newton's Second Law in 1 Dimension: A 450-kg sports car accelerates from rest to 100 km/h in 4.80 s. What magnitude force does a 68.0 kg passenger experience during the acceleration?
A. 394 N B. 82.0 N C. 342 N D. 311 N