If a spring of spring constant 500 N/m is compressed by 15 cm, how much elastic potential energy is stored in the spring? (hint: convert cm to m) A. 13,250 J

B. 5.6 J

C. 56,250 J

D. 18.9 J

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

What is an electric motor? explain its operation. 2-3 sentence

Where should a carbon monoxide detector be mounted?