Find the speed of sound in air at 0 ∘c ( 1100 ft/s ) in m/s

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2