The apparent visual magnitude difference between two stars is 10 and thus the approximate intensity ratio is 10,000

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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If a reaction is exothermic and produces large quantities of heat reaching equilibrium, its equilibrium constant will be

A) negative, because it is an exothermic reaction. B) zero, because the reaction will not have an equilibrium constant. C) small (less than. D) large.

Physics & Space Science

If the Moon appears half lit, and is almost overhead about 6:00 AM, its phase is

A) full. B) first quarter. C) waxing crescent. D) waning crescent. E) third quarter.

Physics & Space Science

An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the point of origin of the flight. The plane flies with an airspeed of 120 m/s

If a constant wind blows at 10 m/s toward the west during the flight, what direction must the plane fly relative to the air to arrive at the destination? A) 4.8° west of north B) 85° west of north C) 4.8° east of north D) 5.9° west of north E) 5.9° east of north

Physics & Space Science

Bones show up in x ray images because they absorb x rays more efficiently than muscle and other tissues do

Indicate whether the statement is true or false

Physics & Space Science