$$\text { Find the mass of the wire that lies along the curve } r \text { and has density } \delta \text {. }$$

question 100

Multiple Choice

$$\text { Find the mass of the wire that lies along the curve } r \text { and has density } \delta \text {. }$$
- $$r ( t ) = \left( \frac { \sqrt { 13 } } { 2 } t ^ { 2 } - 7 \right) i + 6 t j , 0 \leq t \leq 1 ; \delta = 3 t$$

• A) \(\frac { 381 } { 26 }\) units
• B) \(\frac { 127 } { 13 }\) units
• C) 43 units
• D) \(\frac { 3 } { 2 }\) units

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