Which of the following observations is not a piece of evidence supporting the Big Bang theory?

A) darkness of the night sky
B) recession speeds of far away galaxies relative to close ones
C) observed helium abundance in the universe
D) relative motions of galaxies in the Local Group


D

Physics & Space Science

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What causes the geological activity seen on some of the inner moons of Jupiter?

a. Constant collisions with space debris provide a power source for geological activity. b. The strong magnetic field of Jupiter heats the surface of the inner moons. c. Tidal friction as a result of being so close Jupiter heats their interiors. d. Solar radiation reflected of Jupiter's surface provides a power source for geological activity.

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An object of mass 4.0 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in the figure

If the speed of the object at the bottom of the inclined plane is 10 m/s, how much work does friction do on this object as it slides down the incline? What will be an ideal response?

Physics & Space Science

The force that binds atoms together to form molecules is

A) gravitational. B) nuclear. C) electrical. D) centripetal. E) none of the above

Physics & Space Science

The wavelength of light visible to the human eye is on the order of 5 × 10^?7 m. If the speed of light in air is 3 × 10^8 m/s, find the frequency of the lightwave

a. 3 × 10^7 Hz b. 4 × 10^9 Hz c. 5 × 10^11 Hz d. 6 × 10^14 Hz e. 4 × 10^15 Hz

Physics & Space Science