Within about 4 AU, all planets are rocky

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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When you measure distances to stars via parallax, it is better to use kilometers or Astronomical Units as the unit of distance

Indicate whether the statement is true or false

Physics & Space Science

A 5.5 meter long Aluminum wire has resistance of 0.40 m?, ? = 2.82 × 10-8 ? ? m, ? = 4.29 × 10-3 C-1. Its conductivity is

A) 233. ? ? m. B) 3.55 × 107 ?-1 m-1. C) 2.5 × 103 ?-1 . D) 2.5 × 103 ? ? m. E) 2.33 × 107 ?-1 m-1.

Physics & Space Science

What is the change in entropy of the lead when 2.0 kg of molten lead solidifies? [Data: Lv = 207. kcal/kg at 1744°C; Lf = 5.9 kcal/kg at 328.°C]

What will be an ideal response?

Physics & Space Science

If all people, animals, trains and trucks all over the world began to walk or run towards the east (opposite the direction of Earth's spin), then

A) Earth would spin a bit faster. B) Earth would spin a bit slower. C) Earth's spin would not be affected at all.

Physics & Space Science