PLS HELP ASAP (no links) WILL MARK YOU

You find a ring with a mass of
13.5g. You fill a graduated
cylinder with 10 ml of water and
put the ring into the cylinder. The
water rises to 15 ml. What is the
substance?

Describe the path of the electric current through a circuit?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

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.