Aball is attached to the end of a string of length l, forming a pendulum. the period of the pendulum is 4.0 s. if the length of the string is doubled, now what is the period of oscillation?

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

With i really need the correct answer!

(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.