A record spins at 33 rpm (revolutions per minute), which is an angular velocity of about 3.46 radians per second What is the approximate linear velocity of any that sts on the record 12 om from the center?

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?