Home Robotics C++ Physics II AP Physics B Electronics AP Java Astronomy Independent Study Summer Session Contests  About
                                                       

Exercises

 

 

¢  A ________________, in the scientific sense, is an analogy or mental image of a phenomena expressed in terms of something else we are

     already familiar with. It is generally relatively simple and provides a structural similarity to the phenomena being studied.

 

¢  A ______________ is more detailed than the above, and can give quantitatively testable predictions.

 

¢  A __________refers to certain concise but general statements about how nature behaves. Sometimes it takes the form of a relationship or

    equation between quantities (such as F = MA).

 

¢  A _______________ refers to less general statements than the item in bullet 3 above.

 

¢  How many significant figures are shown in each of the following? Write your answer in the space provided.

    

    Ø  214        ________                   

    Ø  82.34     ________         

    Ø  7.08       ________     

    Ø  0.03       ________        

    Ø  0.0075   ________

    Ø  1234      ________

    Ø  3600      ________

              

¢  Write the following numbers showing all zeros in the space provided.

 

    Ø  1.23 x 105  ______________ 

 

    Ø  12.4 x 10-5 ______________

 

¢  What is the percent uncertainty in the following measurement? 1.76 + - 0.25 m?

 

 

¢  What is the area, and its approximate uncertainty, of a circle of radius 3.8 x 104 cm? 

 

¢  Three students derive the following equations in which x refers to distance travelled,  v the speed, a the acceleration in m/seconds2

      and t the time in seconds, and the subscript 0  means a quantity at time t = 0.

     (a) x = vt2 + 2at

     (b) x = v0t + (½)at2

     (c) x = vot + 2at2