A metal cube of Cross sectional area of 3.45m² at 0°c is heated at temperature rise of 10K with a length of 3m. Find the coefficient of the superficial expansivity

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point