Water Rocket Project Rubric

The Water Rocket Project Rubric has been placed on the Water Rocket Project Info Tab.  You should take a look at it.  Also, be sure to start your planning and construction now so you don't get super stressed the week it is due.

I have an idea of how we can have launches on both Thursday May 16th and Friday May 17th even if sophomores are taking the ECA on Thursday.  I have looked at the numbers of sophomores and juniors in each of the 4 periods of Honors Physics.  The idea is that on Thursday while the sophomores are taking their English 10 ECA, the juniors will be launching the rockets.  On Friday, the sophomores will be launching their rockets while the juniors watch.  This actually works out nicely because it will allow each person/pair to get multiple launches in (possibly more than 3; time permitting).  I will discuss this idea with you tomorrow.

Feel free to post in the comments section.  :-)

Mr. Dahlstrom

Equation Sheet - Spring

Honors Physics Final - Spring 2012 - Mr. Dahlstrom

PHYSICS FINAL REVIEW                                   Borrowed from Spring 2012, Mrs. Ward

Due on day of final.  Please complete problems on a separate sheet of paper. 

DO NOT ATTACH THIS PAPER TO YOUR COMPLETED WORK. 

Chapter 10, Energy, Work and Simple Machines

1. work done by forces along the direction of motion, opposite to the direction of motion, and at an angle to the direction of motion

2.  Relationship between work and energy

3.  Work-Kinetic Energy Theorem

            - what does it say?

            - must know NET work and CHANGE in kinetic energy to use this

4.  Power and energy transfer

Chapter 11, Energy and Its Conservation

1.  Forms of mechanical energy (kinetic, types of potential, etc.)

2.  Conservation of mechanical energy and problems

            -When does this apply?

Chapter 9, Momentum and Its Conservation

1. Impulse-momentum theorem

            - what is impulse?

            - what is momentum?

            - applications and problems

2.  Conservation of Momentum

            - for closed, isolated systems

            - problems in one dimension

Chapters 20 and 21, Electrostatics

1.  Methods of electrically charging objects

            - Contact, Induction, polarization

            - What kind of charge do you get?

2.  Electric insulators and conductors

3.  Coulomb’s Law

4.  Electric fields

            - what they are

- how to calculate them (both equations and when to use them)

- drawing field lines

5.  Characteristics of a conductor in electrostatic equilibrium

6.  Electric Potential and Potential difference

            - what does it do?

Chapters 22 and 23, Circuits

1.  Current

2.  Resistance and Ohm’s Law

3.  Electric Power  (all 3 equations and when to use them)

4.  Series Circuits (all properties)

5.  Parallel Circuits (all properties)

Chapters 24 and 25, Magnetism

1.  Source of magnetism

2.  Magnetic fields

            -  what they are and what affects their strength

            -  what they look like around bar magnets and wires

            -  right-hand rule for direction around wires

3.  Magnetic forces

            -  what affects their strength on charged particles and current carrying wires

            -  right-hand rule for direction on charged particles and current carrying wires

Simple Harmonic Motion (Sec 14.1)

1.  Characteristics of this motion:  velocity, acceleration, forces, period

            -  The Pendulum, Mass on a Spring

            - What affects the period for each one

 

Chapter 14, Vibrations and Waves

1.  Types of waves

2.  Measures of a wave - frequency, wavelength, velocity

            - what determines the velocity of a wave?

3.  What happens at the boundaries between media?

4.  The principle of superposition and interference

5.  Doppler Effect

Chapters 16 and 17, Light and Reflection

1.  What type of wave is light?

2.  Wavelengths for visible light - what is red and what is violet?

3.  The speed of light in a vacuum

4.  Reflection

            - diffuse vs. specular reflection

5.  Flat, convex, and concave mirrors and the images they form

6.  Real vs. virtual images

7.  The mirror equation and magnification (don't forget the sign rules!)

Chapter 18, Refraction

1.  Refraction

            - the index of refraction

            - Snell's Law

            - Total internal reflection and the critical angle

2.  Convex and concave lenses and the images they form

3.  The lens equation and magnification (don't forget the sign rules!)

Final Review Problems

1.       A child on a sled starts from rest at the top of one hill, coasts down the hill, and then up a second hill.  If the mass of the child and the sled is 65 kg, the height of the first hill is 15 m and the height of the second hill is 4.0 m, what is the velocity of the child and the sled at the top of the second hill?  Assume there is no friction, and use conservation of mechanical energy.

2.       A 12.0 kg shopping cart is pushed from rest by a 280.0 N force.  A 75.0 N friction force opposes the motion. After the cart has traveled 11.5 m, what is the cart's final speed? Use the Work-Kinetic Energy Theorem.

3.       A 0.20 kg baseball is pitched with a velocity of 42 m/s and is then batted to the pitcher with a velocity of 63 m/s.  If the ball was in         contact with the bat for 0.15 s, what force did the bat exert on the ball?

4.       A snowball with a mass of 85 g hits a snowman's top hat and sticks to it.  The hat and snowball, with combined mass of 220 g, fly off together at 8.0 m/s.  How fast was the snowball moving at the moment of impact?

5.       Consider a thundercloud that has an electric charge of 40.0 C near the top of the cloud and -40.0 C near the bottom of the cloud.  These charges are separated by 2.0 km.  What is the electric force between these two sets of charges? 

6.       An electric field of 3.2x104 N/C is directed along the positive x-axis.  What is the electric force on an electron in this field?  (include both size and direction.)

7.       A point charge has a charge of +2.0 µC.  What is the electric field 10.0 cm away from the charge?  (include both size and direction)

8.       Two resistors of 4.0 Ω and 12 Ω are connected in series across a 9.0 V battery.

          a)  What is the equivalent resistance of the circuit?

          b)  What is the current through each resistor?

          c)  What is the voltage drop across each resistor?

9.       Two resistors of 15.0 Ω and 35.0 Ω are connected in parallel across a 45.0 V voltage source. 

          a)  What is the equivalent resistance of the circuit?

          b)  What is the total current in the circuit?

          c)  What is the current through each resistor?

10.     A mass on a spring vibrates in simple harmonic motion.  If the period of the vibrations is 0.75s and the spring constant is 130 N/m, what is the mass of the object?

11.     What is the period of a pendulum that is 45 cm long if the pendulum is on Earth (g = 9.80 m/s²)?

12.     A tuning fork produces a sound with a frequency of 256 Hz and a wavelength in air of 1.35 m.

          a)       What value does this give for the speed of sound in air?

b)      What would be the wavelength of the wave produced by this tuning fork in water in which the sound travels at 1500 m/s?

13.     A thimble 2.1 cm high is placed in front of a concave mirror.  A real image of the thimble is formed 17.0 cm in front of the mirror.  The radius of curvature of the mirror is 20.0 cm.

          a)       How far is the object from the mirror? 

b)      What is the magnification of the mirror? 

14.     A candle that is 10.0 cm high is placed 30.0 cm in front of a diverging lens.  The lens has a 20.0 cm focal length. 

a)       Where does the image appear to be located?

b)      What is the magnification of the image?

15.     Diamond has an index of refraction of 2.419.  If it is immersed in water, which has an index of refraction of 1.333, and light rays in the water shine on the diamond at an angle of incidence of 22.0°, what is the angle of refraction inside the diamond?

ANSWERS:

1.       v_f = 15 m/s

2.       v_f = 19.8 m/s

3.       F = -1.4x10² N

4.       v_1i = 21 m/s

5.       3.6x10⁶ N, attractive                                                                                  

6.       5.1x10^-15 N, along the negative x-axis                          

                                                         

7.       1.8x10⁶ N/C, away from the charge

                                                        

8.       a)  16 W                                  

          b)  0.56 A                               

          c)  2.2 V, 6.7 V                                

9.       a)  10.5 W                               

          b)  4.3 A

          c)  3.0 A, 1.3 A   

10.     1.9 kg

11.     1.3 s

12.     a)  346 m/s

          b)  5.86 m                                                                                        

13.     a) 24.3 cm                              

          b) –0.700                                                             

14.     a)  -12.0 cm

          b)  0.400

15.     11.9°

Internet Lab Homework (Due FRIDAY)

Click below and print out a copy of the assignment:
Click this and then Click on the Downloadable File


The following link is for Procedure Part 1:
Charges and Fields

The following link is for Procedure Part 2:
Electric Field Hockey

Video Link for 5/1/12:

Click Below:

The Universe - Magnetic Storm

original URL (in case link above does not work)
http://www.youtube.com/watch?v=NlSLljXaPQE

Nikola Tesla - YouTube Video (4/30/12)

Click below to go to video
Nikola Tesla - Youtube Video

If link does not work, here is the URL

http://www.youtube.com/watch?v=Mies7-D0DGI

Mirrors & Lenses – Ch. 29-30 Study Guide

Important Terms

1. angle of incidence
2. angle of reflection
3. concave mirror
4. convex mirror
5. critical angle
6. diffuse reflection
7. law of reflection
8. fiber optic
9. plane mirror
10. real image
11. reflection
12. refraction
13. specular reflection
14. total internal reflection
15. virtual image
16. converging lens
17. diverging lens
18. focal length
19. focal point
20. lens
21. vertical axis
22. principal axis
23. ray diagram

Important Questions

1. Describe the image formed by a plane mirror.

2. Describe the image formed by convex mirror.

3. Describe the image formed when an object is (a) beyond the focal point of a concave mirror; (b) at the focal point; and (c) inside the focal point.

4. What is the difference between diffuse and specular reflection?  When is diffuse reflection a good thing?  When is specular reflection a bad thing?

5. What causes refraction?  What are some optical illusions that are due to the refraction of light in different materials?

6. What is total internal reflection?  What is an important application of it?

7. What is the difference between a converging and a diverging lens?

8. Describe the image formed by a diverging lens.

9. Describe the image formed by a converging lens when the object is
1. at the focal point.
2. between one and two focal lengths from the lens.
3. two focal lengths away from the lens.
4. beyond two focal lengths away from the lens.
5. at infinity.