A group of students observes that a wooden block (m=0.40 kg) on the end of a string with a radius of
0.7 meters makes 13 rotations in 20.7 seconds
when twirled.
A. What is the blocks tangential speed? (linear)
B. what is the blocks angular speed?

If forces acting on an object are unbalanced. true or false

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.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius