Waves
Concepts: Lab skills, Graph Interpretation Skills, Waves, Sound
a) Be able to draw diagrams of harmonics in a string, an open tube, and a
closed tube.
b) Draw graphs showing relationships between length, harmonic number,
frequency, speed, and force
Michelle Kwan, with a mass of 50 kg, practices ice skating for her Olympic figure
skating routine.
A] When she glides on ice there is so little friction that it can be ignored.
Explain what happens to her velocity and acceleration while gliding.
B] She hi
You calculate the acceleration for several different roller coaster designs. Which of the following
are safe?
A] Roller Coaster A has an acceleration of 1.8g at the bottom of the loop.
B] Roller Coaster B has an acceleration of 2.3g at the bottom of the l
Two-Dimensional Collision
Concepts: Momentum, Work-Energy Conservation, Car Crash Reconstruction
A car crash occurred at an intersection and involved two vehicles: MV1, 1500-kg, moving at 25
m/s at 35 NE and MV2, 1330-kg moving at 37 m/s at 73 NW. The car
Resonance
Concepts: Waves
A physics teacher sets up a closed tube to resonate at a fundamental frequency of 440 Hz.
a.a.
Draw a diagram of the standing wave in the tube.
a.b.
What is the wavelength of the wave if room temperature is 27.3?
a.c.
How long is
A 60-W light bulb and a 100-W light bulb are both connected in parallel
to a 120V outlet. Which light bulb has more current in it?
A] 100-W
B] 60-W
C] Both have the same current
A 60-W light bulb and a 100-W light bulb are both rated at a 120-V.
Which lig
If the designers desired to use a minimum amount of power to bring the coaster up
the first hill (without changing the height of the hill itself), what should they do?
A] Decrease the time.
B] Increase the time.
C] Decrease the work.
D] Increase the work.
A roller coaster has an initial hill with a height of 45 m. It descends to 0-m and then goes into a
loop with a radius of 15 m. Assume the car & passengers have a mass of 500 kg.
A] Calculate the GPE at the top of the initial hill
B] Calculate the velocit
Three resistors are connected as
shown in the figure. The voltage
(potential difference) between
points A and B is 26 V.
A] What is the equivalent resistance between the points A and B?
B] How much current flows through the 3-ohm resistor?
C] How much cur
A 0.06kg egg is dropped from a height of 3.5m above the ground. If the egg lands
in a pit of sand and indents the sand by 0.12m, how much force is exerted on the
egg during the collision with the ground?
A 2000kg car is moving at 35miles/hr (15.6m/s) and