What is the best estimate of the frequency of the wave shown below

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

Which planets are visible without a telescope

Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?