1. Why should we convert units within the metric system? 2. The metric system is based on units of

a) twenty five b) fives c) sixteen d) tens

3. Work the “SI Estimation Challenge” in the box on page 13.

4. Copy the “study skills” figure on page 14.

5. Convert 52,000 kilometers to centimeters. 52,000 km = cm

6. Convert 25 millimeters meters. 25 mm = m

7. A conversion factor is a ratio with a value of

a) one b) two c) five d)ten

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

What are igneous intrusions and extrusions

Debris produced by mining is called