What kind of man made feature would likely lead to sand loss on a beach regardless of active margin (west coast north america) versus passive margin (east and gulf coast of north america) setting for the coastline? a. construction of offshore oil platforms b. dam construction c. building too close to sea-cliff and allowing urban runoff to seep into the rocks along the cliff d. constructing a highway bridge over a bay mouth

If forces acting on an object are unbalanced. true or false

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.