Mr. Byrne                                Week of 9/11/06

Physics

 

HOMEWORK

 

1)      The speed of light is about 3.00 x 10⁸ m/s.  Convert this to miles per hour.

 

2)      Is the following equation dimensionally correct: T² = 2pÖl/g, where T is period of a pendulum measured in seconds, l is length of pendulum (in meters) and g is acceleration due to gravity (in meters per second squared)?

 

 

3)      The thickness of the numbered pages of a textbook is measured to be 3.75 cm.  If the last page of the book is numbered 860, what is the average thickness of a page?

 

 

4)      To go to a soccer game, you first drive 1000. m north and then 500. m west.  What is the straight-line distance from your home to the field?

 

 

5)      A light-year is a unit of distance corresponding to the distance light travels in a vacuum in 1 year.  If the speed of light is 3.00 x 10⁸ m/s, what is the length of 1 light-year in meters?

 

 

6)      The outside dimensions of a cylindrical soda can are reported as 12.559 cm for the diameter and 5.62 cm for the height.  What is the total outside area of the can?

 

 

7)      The side of a cube is measured, and its volume is reported to be 2.5 x 10² cm³.  What was the measured length of the cube?

 

 

8)      Which of the following quantities represents the greatest speed?  a) 1 m/s b) 1 km/h c) 1 ft/s d) 1 mi/h.

 

 

9)      A car travels at a constant speed of 15 m/s.  How many meters does it travel in 1 h?  How many miles does it travel in 1 h?

 

 

10)  At 1454 ft, the Sears Tower in Chicago is one of the tallest buildings in the world.  What is its height in meters?

 

Helpful equalities: 1 m = 3.28 ft; 1 in = 2.54 cm; 1 km = .62 mi; 1 mi = 1609 m; 1 m = 100 cm; 1 h = 3600 s.