The fastest served tennis ball, served by Samuel Groth in 2012, was measured at 73 m/sm/s. The mass of a tennis ball is 57 gg, and the ball is typically in contact with the tennis racquet for 30.0 msms, with the ball starting from rest.

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).

Physical science b final exam bernoulli’smovepowercompound translucent the sun i was having such a pain for this searching every question so i hope i made someone happy

Answerthe distance between the two ends of the galaxy is 150,000 light years;