Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = (2 cos 3t)i +(2 sin 3t) j + 6tk, 0 ? t ? 2?; ?(x, y, z) = 3(1 + sin 3t cos 3t)
A. 
B. 
C. 
D. 
Answer: B
Mathematics
You might also like to view...
Find the derivative of y with respect to the appropriate variable.y = (9 - 9?) tanh-1 ?
A. 
- 9 tanh-1 ?
B. 
- 9 tanh-1 ?
C. 
- 9 tanh-1 ?
D. 
Mathematics
Simplify.[-12 - (-4)] ÷ 4
A. 4 B. 2 C. -4 D. -2
Mathematics
Express the set in roster form.{x|x is an integer between -2 and 2}
A. {-2, -1, 0, 1, 2} B. {-2, -1, 0, 1} C. {-1, 0, 1} D. {-1, 0, 1, 2}
Mathematics
Find the LCM of the set of numbers.18, 13
A. 31 B. 234 C. 78 D. 13
Mathematics