Basic Mathematics Flashcards
1
Q
1 gallon of water weighs ___ lbf
A
8.34
2
Q
1 ft^3 of water weighs ___ lbf
A
62.4
3
Q
1 in^3 of mercury weighs ___ lbf
A
0.491
4
Q
1 m^3 of water is ___ kg
A
1000
5
Q
The surface area of a sphere is 4 times the area of its shadow. True or False?
A
True
6
Q
The length of a vector is its ____
A
magnitude.
7
Q
In vector cross products, n is the unit vector perpendicular to the plan containing A and B. The direction of n can be determined with ____
A
Right Hand Rule
8
Q
How does the right hand rule work.
A
Place your hand along A and face your palm in the direction of B. Your thumb will be in the direction of n.
