Objective: SWBAT review for the AP test/final
Warm Up: Pick up one packet.
A heat engine has an efficiency of 25% and extracts 120 J of heat from a hot reservoir per cycle. a) How much net work does it perform in each cycle? b) How much heat does it exhaust in each cycle?
Monday, May 7, 2012
Tuesday, May 1, 2012
5/1
Happy May Day
Objective: SWBAT understand the relationship between density, volume, mass and the buoyant force.
Warm Up: An aluminum object has a mass of 27.0 kg and a de4nsity of 2.70 x 10^3 kg/cubic m. The object is attached to a string and immersed in a tank of water. Determine the a) volume of the object and b) the tension in the string when it is completely immersed.
Objective: SWBAT understand the relationship between density, volume, mass and the buoyant force.
Warm Up: An aluminum object has a mass of 27.0 kg and a de4nsity of 2.70 x 10^3 kg/cubic m. The object is attached to a string and immersed in a tank of water. Determine the a) volume of the object and b) the tension in the string when it is completely immersed.
Monday, April 30, 2012
4/30
All students should report to the Media Center.
Bring some paper, a pencil, an equation sheet and a calculator.
Log on to this blog. Go to http://apphysicsb.homestead.com/review.html .
Choose a subject within Newtonian Mechanics and click on it. In the window pane on the left (in black) choose "Practice Questions". Complete the quiz and email me the results (heyesd@calvertnet.k12.md.us).
Choose another subject within Newtonian Mechanics and repeat the process. If time permits, take a third quiz (which will count as extra credit towards this assignment).
YOU MUST WORK INDIVIDUALLY.
Bring some paper, a pencil, an equation sheet and a calculator.
Log on to this blog. Go to http://apphysicsb.homestead.com/review.html .
Choose a subject within Newtonian Mechanics and click on it. In the window pane on the left (in black) choose "Practice Questions". Complete the quiz and email me the results (heyesd@calvertnet.k12.md.us).
Choose another subject within Newtonian Mechanics and repeat the process. If time permits, take a third quiz (which will count as extra credit towards this assignment).
YOU MUST WORK INDIVIDUALLY.
Friday, April 27, 2012
4/27
Objective: SWBAT determine how well they performed on the FRQ section of an AP Physics B Exam.
Warm Up: Get out your 2009 AP FRQ's.
A 2.0 kg wooden block is on a level board and held against a spring for force constant 100 N/m which has been compresses 0.10 m. The block is released and propelled horizontally across the board. The coefficient of friction between the block and the board is 0.20. Determine the velocity of the block just as it leaves the spring. Also, determine the distance the block travels after it leaves the spring.
Warm Up: Get out your 2009 AP FRQ's.
A 2.0 kg wooden block is on a level board and held against a spring for force constant 100 N/m which has been compresses 0.10 m. The block is released and propelled horizontally across the board. The coefficient of friction between the block and the board is 0.20. Determine the velocity of the block just as it leaves the spring. Also, determine the distance the block travels after it leaves the spring.
Thursday, April 26, 2012
4/26
Objective: SWBAT relate work and energy within a problem (finish forces review- start W, P, E review).
Warm Up: A 50 kg rider on the "Rotor Ride" stands along a vertical wall in a circular room of radius 3.0 m. The room begins to rotate and at a certain point the floor drops down several meters, leaving the rider pressed against the wall. If the coefficient of static friction between the rider and the wall is 0.40, determine the minimum a) speed and b) frequency of rotation required to prevent the rider from slipping down the wall. ( Hint: draw a free body diagram of this situation!)
Warm Up: A 50 kg rider on the "Rotor Ride" stands along a vertical wall in a circular room of radius 3.0 m. The room begins to rotate and at a certain point the floor drops down several meters, leaving the rider pressed against the wall. If the coefficient of static friction between the rider and the wall is 0.40, determine the minimum a) speed and b) frequency of rotation required to prevent the rider from slipping down the wall. ( Hint: draw a free body diagram of this situation!)
Friday, April 20, 2012
4/20
Objective: SWBAT review kinematic problems for the AP exam.
Warm Up: From the top of a cliff overlooking a lake, a person throws two stones. The stones have identical initial speeds. However, stone 1 is thrown downward at an angle (theta) that is below the horizontal and stone 2 is thrown at the same angle above the horizontal.
1) Draw a sketch of this situation
2) Neglecting air resistance, decide which stone, if any, strikes the water with a greater final velocity.
Warm Up: From the top of a cliff overlooking a lake, a person throws two stones. The stones have identical initial speeds. However, stone 1 is thrown downward at an angle (theta) that is below the horizontal and stone 2 is thrown at the same angle above the horizontal.
1) Draw a sketch of this situation
2) Neglecting air resistance, decide which stone, if any, strikes the water with a greater final velocity.
Thursday, April 19, 2012
4/19
Objective: SWBAT review projectile motion.
Warm Up: A projectile is fired with an intiial speed of 113 m/s at an angle of 60 degrees above the horizontal from the top of a cliff 49 m high. Determine the time to reach maximum height and the total time of flight.
Warm Up: A projectile is fired with an intiial speed of 113 m/s at an angle of 60 degrees above the horizontal from the top of a cliff 49 m high. Determine the time to reach maximum height and the total time of flight.
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