What was a young noble boy training for knighthood called at the age if 14

What new form of music swept the nation in the 1950s a. chamber music b. hip-hop c. jazz d. rock-and-roll

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?

Which two characteristics belong to mahayana buddhism. a.followers worship and offer animal sacrifice at festivals b.a followers highest aim is to attain the status of a bodhisattva c.an emphasis is placed on fulfilling sensual pleasure d.this form of buddhism is the most acient for od buddhism that exists today e.followers belive that everyone is capable of attaining enlightenment