1. which of the following vectors are the same? (a) v = h3, −3i (b) v has initial point: (3, −2) and terminal point: (2, −3) (c) kvk = 3√ 2 and v makes an angle of −π/4 with the positive x-axis. (d) kvk = √ 2 and v makes an angle of 5π/4 with the positive x-axis. (e) v = h−1, −1i

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

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?