Which force is a contact force?
a. the force produced by interactions between electrically charged objects.
b. the force produced by interactions between two masses.
c. the force of attraction between two masses.
d. the force exerted by water when an object floats on it

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.

Discuss cell surface transport in the structure of constituents

Is this mrna or rna need need the answer in a hurry