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

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

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).

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

What will be an ideal response?