Review problem. sir lost-a-lot dons his armor and sets out from the castle on his trusty steed in his quest to improve communication between damsels and dragons (fig. p12.20). unfortunately his squire lowered the draw bridge too far and finally stopped it 20.0° below the horizontal. lost-a-lot and his horse stop when their combined center of mass is 1.00 m from the end of the bridge. the uniform bridge is 8.50 m long and has a mass of 2200 kg. the lift cable is attached to the bridge 5.00 m from the hinge at the castle end, and to a point on the castle wall 12.0 m above the bridge. lost-a-lot's mass combined with his armor and steed is 850 kg. suddenly, the lift cable breaks! the hinge between the castle wall and the bridge is frictionless, and the bridge swings freely until it is vertical.

Follow these directions and answer the questions. 1. set up the ripple tank as in previous investigations. 2. bend the rubber tube to form a "concave mirror" and place in the ripple tank. the water level must be below the top of the hose. 3. generate a few straight pulses with the dowel and observe the reflected waves. do the waves focus (come together) upon reflection? can you locate the place where the waves meet? 4. touch the water surface where the waves converged. what happens to the reflected wave? 5. move your finger twice that distance from the hose (2f = c of c, center of the curvature) and touch the water again. does the image (the reflected wave) appear in the same location (c of c)? you may have to experiment before you find the exact location. sometimes it is hard to visualize with the ripple tank because the waves move so quickly. likewise, it is impossible to "see" light waves because they have such small wavelengths and move at the speed of light. however, both are examples of transverse waves and behave in the same way when a parallel wave fronts hit a curved surface.

What is a possible result of higher air temperature caused by global warming

Argon, neon, and xenon are examples of