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1. An air puck bounces back and forth between two parallel walls (always traveling perpendicular to the walls). Each time it hits a wall it receives a slight "kick" (the walls are attached to high speed transducers which provide the necessary kick) to compensate for any energy losses so that the puck always has the same speed after each collision as it had before the collision. The walls are separated by 50.0 cm and the puck takes 2.00 s to go from one wall to the other on each transit.
(a) Draw a position vs. time graph and a velocity vs. time graph for the puck. Make your axes reasonably accurate and show at least two cycles of the motion. What are the period and frequency of the motion?
(b) Is the puck executing simple harmonic motion? Why or why not?
2. A student argues the following:"We know that vmax = Aω. So if we know the position of a mass on a spring we can always get its velocity just by multiplying the position by ω." Point out the flaw in this student's argument.
An golf ball sits on the optical axis of a spherical mirror at a distance of 17 cm. A virtual image is formed a distance of 6 cm away from the mirror. What is the mirror's focal length (include sign if negative)
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71483 km). What is the period of the spacecraft's orbit
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Your task in physics lab is to make a microscope from two lenses.One lens has a focal length of 12 {\rm cm}, the other a focal lengthof 2.5 {\rm cm}. You plan to use the morepowerful lens as the objective, and you want its image tobe 16 {\rm cm} f..
Two college students having the same mass M roll toward each other on roller blades, each moving at the same speed v. What is the combined momentum of the two skaters?
A piano wire with mass 3.45 g and length 77.0 cm is stretched with a tension of 33.0 N . A wave with frequency 100 Hz and amplitude 1.70 mm travels along the wire. Calculate the average power carried by the wave. What happens to the average power if ..
Hubble Space Telescope resolves sources
a small dog sits 3.0 m in front of a plane mirror. where is the dog's image in relation to the mirror
Calculate the velocity of a transverse wave on a rope when the tension in the rope os 10 newtons, its length is 0.8 meters, and its mass is 0.05 kg
A brave child decides to grab on to an already spinning merry-go-round. The child is initially at rest and has a mass of 26.5 kg. What is the moment of inertia of the merry-go-round with respect to its central axis
An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm while the potential difference between them is 340 V. How numerous excess electrons does this have here.
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