Solve the problem.A 20-kg mass is attached to a spring that hangs vertically and is stretched 3 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to compress the spring and lift the mass 1 m? Round to four decimal places when appropriate.
A. 163.3333 J
B. 212.3333 J
C. 359.3333 J
D. 16.3333 J
Answer: C
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Answer the following statement(s) true (T) or false (F)
Fostering intrinsic motivation encourages students to develop higher levels of confidence in their mathematical ability and to persist even in the face of failure
Find all specified roots.Fifth roots of i.
A. cis 
, cis 
, cis 
, cis 
, cis 
B. cis 
, i, cis 
, cis 
, cis 
C. cis 
, cis 
, cis 
, cis 
, 1
D. cis 
, cis 
, -1, cis 
, cis 
Solve.An earthquake was recorded with an intensity which was 
times more powerful than a reference level earthquake, or 
What is the magnitude of this earthquake on the Richter scale (rounded to the nearest tenth)? The magnitude on the Richter scale of an earthquake of intensity I is 
A. 3.5 B. 4.5 C. 0.5 D. 10.4
Factor completely.8a3 - 125b3
A. (8a - 5b)(a2 + 10ab + 25b2) B. (2a - 5b)(4a2 + 10ab + 25b2) C. (2a - 5b)(4a2 + 25b2) D. (2a + 5b2)(4a2 - 10ab + 25b2)