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Star Patterns: The goals of this project are (1) to allow the night sky to become more familiar (2) To use the Atl-Az coordinate system and the hand angle measuring tricks and (3) Learn a few Constellations Part 1: Make up some of your own constellations 1. Always record date, time, place and sky conditions 2. Pick a patch of sky, large or small, with a recognizable pattern of stars in it. What does the pattern remind you of? Name it. Make a sketch of it. 3. Specify (a) Altitude and Azimuth and (b) the angular size of your constellation, using fists, etc. to gauge angles. Record numbers on sketch and in report Part 2: Reconcile your "private universe" with that of the mostly Babylonian-Greek-Roman constellations that are now "standard". 1. Use a starfinder (planisphere) 2. Set the time and date 3. Orient the star finder overhead and find your private constellation 4. Indicate on your sketch (or make a new one) where the greek constellations lie in relation to yours 5. Whose version is more memorable?
An object is solid throughout. When the object is totally submerged in ethyl alcohol, its apparent weight is 15.1 N. When completely submerged in water, its apparent weight is 12.8 N. What is the volume of the object?
A fish takes the bait and pulls on the line with a force of 2.3N . The fishing reel, which rotates without friction, is a uniform cylinder of radius 0.060m and mass 0.86kg, What is the angular acceleration of the fishing reel
A 8.75-\mu {\rm C} point charge is glued down on a horizontalfrictionless table. What would the tension be if both charges were negative
Two +1 microCoulomb point charges are located on the x-axis, at x =2m and at x = -2m. Find the magnitude of the electric field at the origin
As a sailboat sails 53.0 m due north, abreeze exerts a constant force F1 onthe boat's sails. This force is directed at an angle west of duenorth. A force F2 of the same magnitude directed due north would do the same amount of work on the sailboat ove..
What is the lowest frequency (in Hz) that will resonate in a 3 m length organ pipe, closed at one end (velocity of sound = 340 m/s) (b) What is the next highest frequency (2nd harmonic)?
A 1 KW motor accelerates centrifuge in 1 minute from rest to speed 1000 rmp. Find moment of inertia of the centrifuge
A 76 man weighs himself at the north pole and at the equator. How much higher is the scale reading in the north pole and by how much
A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding, What is the true frequency of the police siren
Four point charges are located at the corners of a square measuring 50.0 cm on each side. Three of the charges are -2.00 uC each and the fourth is -5.00 uC, Find the potential energy of the system of four charges
The speed of sound at 0oC is 331 m/s. At another temperature, the speed of sound is measured to be 343 m/s. Evaluate what is this temperature
an arrow is shot at an angle of theta45 degrees above the horizontal. the arrow hits a tree a horizontal distance d220m
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