Awrecking ball has a mass of 650 kg. it swings from a cable that is 21 m long. the centripetal force on the ball is 56 n.

what is the tangential speed of the wrecking ball?

1.3 m/s
1.8 m/s
46 m/s
870 m/s

In which of the following relationships is one organism always benefited while the other organism is always harmed

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.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.