A uniform-density disk of mass 14 kg, thickness 0.03 m, and radius 0.8 m makes one complete rotation every 0.7 s. What is the rotational kinetic energy of the disk?
What is the rotational angular momentum of the disk?
(Express your answer for rotational angular momentum in vector form.)Lrot = ??kg · m2/sKrot = ??  J

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

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