Identify at least three patterns of motion or planetary arrangement/location that a theory of solar system formation should be able to explain.
What will be an ideal response?
Answer: Answers may include: 1. Planets orbit in the same direction. 2. Orbital direction is the same direction as the Sun's spin. 3. Most planets spin in the same direction that they orbit. 4. Bigger planets are in the outer solar system. 5. Large planets have many moons. 6. Planets lie in approximately the same plane.
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Buoyancy: A 50-cm3 block of wood is floating on water, and a 50-cm3 chunk of iron is totally submerged in the water. Which one has the greater buoyant force on it?
A. the wood B. the iron C. Both have the same buoyant force. D. It cannot be determined without knowing their densities.
What are some advantages of radio telescopes over optical scopes?
What will be an ideal response?
The distance between Earth and the Sun is 93,000, 000 miles, or one ______________
Fill in the blank(s) with correct word
A block of mass 5.00 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.200 . A string attached to the block is pulled horizontally, resulting in a 3.00 m/s2 acceleration by the block. Find the tension in the string. (g = 9.80 m/s2)
a. 0.200 N c. 19.8 N b. 9.80 N d. 24.8 N