A block is initially sliding along a surface of negligible friction with a speed v 0 v0 . A constant force F 0 F0 is then exerted on the block. Which of the following figures represents the situations in which the kinetic energy of the block will initially decrease? Select two answers.

U.s. internet advertising revenue grew at the rate of r(t) = 0.82t + 1.14 (0 ≤ t ≤ 4) billion dollars/year between 2002 (t = 0) and 2006 (t = 4). the advertising revenue in 2002 was $5.9 billion.† (a) find an expression f(t) giving the advertising revenue in year t.

Which of the following is true concerning the 5/5 lapse rule? a) the 5/5 lapse rule deems that a taxable gift has been made where a power to withdraw in excess of $5,000 or five percent of the trust assets is lapsed by the powerholder. b) the 5/5 lapse rule only comes into play with a single beneficiary trust. c) amounts that lapse under the 5/5 lapse rule qualify for the annual exclusion. d) gifts over the 5/5 lapse rule do not have to be disclosed on a gift tax return.

Russell's study compared gpa of those students who volunteered for academic study skills training and those who did not elect to take the training. he found that those who had the training also had higher gpa. with which validity threat should russell be most concerned?