Addition by 1. Components: Vector  has a magnitude of 8.0 m and points 30° north of east; vector  has a magnitude of 6.0 m and points 30° west of north; and vector  has a magnitude of 5.0 m and points 30° west of south. The resultant vector  + -5.0px;" /> +  is given by



A. 2.7 m at an angle 74° north of east.

B. 5.9 m at an angle 74° north of east.

C. 4.8 m at an angle 74° east of north.

D. 5.1 m at an angle 74° north of east.

E. 2.1 m at an angle 66° east of north.

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Answer: D

Physics & Space Science

The linear atom density of the [110] direction for a FCC metal is ______________atoms divided by the length of the face diagonal.

Fill in the blank(s) with the appropriate word(s).

A sled weighs 160 N. It is held in place on a frictionless 25.0° slope by a rope attached to a stake at the top; the rope is parallel to the slope. What is the normal force of the slope acting on the sled?

a. 145 N b. 67.6 N c. 177 N d. 379 N e. 74.6 N

How fast (in m/s) is the Concorde moving if it reaches Mach 1.5? (The speed of sound in air is 344 m/s.)

a. 229 b. 516 c. 416 d. 728 e. 858

Distinguish between the three phases of matter from the atomic or microscopic point of view

What will be an ideal response?