Double-lobed radio galaxies appear to be emitting jets of gas and radiation

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


True

Physics & Space Science

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Two identical objects in outer space, one moving at 2 m/s, the other at 1 m/s, have a head-on collision and stick together. Their combined speed after the collision is

A) 0.5 m/s. B) 0.33 m/s. C) 0.67 m/s. D) 1.0 m/s. E) none of the above

Physics & Space Science

Instructions: On occasion, the notation will be a shorthand notation for .

If = [10 m, 30°] and  = [25 m, 130°], what is the magnitude of the sum of these two vectors? A. 20 m B. 35 m C. 15 m D. 25 m E. 50 m

Physics & Space Science

A 1321-kg car climbs a 5.0° slope at a constant speed of 80km/s Assuming that air resistance may be neglected, at what rate (in kW) must the engine deliver energy to the drive wheels of the car?

A) 25 kW B) 48 kW C) 287 kW D) 38 kW

Physics & Space Science

Water able to be contained in the subsurface depends on

A) permeability. B) porosity. C) chemical composition. D) none of these

Physics & Space Science