Fastened to a wall a second ob- ject, m2 5 7.00 kg, is slowly pushed up against m1, compress- ing the spring by the amount a 5 0.200 m (see fig. p12.67b). the system is then released, and both objects start moving to the right on the frictionless surface. (a) when m1 reaches the equilibrium point, m2 loses contact with m1 and moves to the right with speed v. deter- mine the value of v. (b) how far apart are the objects when the spring is fully stretched for the first time.

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)