Ablock of unknown mass is attached to a spring of spring constant 7.3 n/m and undergoes simple harmonic motion with an amplitude of 12.7 cm. when the mass is halfway between its equilibrium position and the endpoint, its speed is measured to be 32.2 cm/s. calculate the mass of the block. answer in units of kg

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

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)

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.