A new star is forming inside this glowing cloud of gas. The dark band in the middle is made of a disk of thick dust, which obscures the light within it and hides the forming star from view. Newly forming stars are surrounded by gas and dust. Based on this observation--and your previous observations about the relative orbits, positions, and sizes of the planets--what is the most likely scenario for the formation of the Solar System?
Choose one:
A. A cloud of gas and dust collapsed into a flattened disk, within which the Sun and planets formed.
B. Two stars collided and broke apart to form the Sun and the planets.
C. A cloud of gas and dust collapsed into a spherical shape, within which the Sun and planets formed.
D. The Sun formed by itself from a collapsing cloud of gas and dust, then later gravitationally captured the planets as they happened to pass by.
A. A cloud of gas and dust collapsed into a flattened disk, within which the Sun and planets formed.
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A 20.0 N force is applied at an angle of 40.0 degrees above the horizontal to a 4.00 kg box. The box moves a horizontal distance of 4.00 meters. Friction is negligible. The work done by the 20.0 N force is
A. 75.0 J. B. 61.3 J. C. 50.1 J. D. 46.3 J. E. 40.5 J.
Striations are long parallel scratches in
A) glaciers that show flow direction. B) bedrock that show the direction of the glaciers flow. C) bedrock that form next to roches moutonnées. D) bedrock that show outwash flow direction.
The combining of two nuclei to form a larger nucleus with the release of energy is __________
Fill in the blank(s) with correct word
Hubble's Law states that v = H0d, and current measurements indicate that H0 ? 22 kilometers per second per million light-years. About how far away is a galaxy with a redshift indicating that it is moving away from us at 2200 kilometers per second?
A) 100 million light-years B) 200 million light-years C) 200 light-years D) 100 light-years