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Canadian geese migrate essentially along a north-south direction for well over a thousand kilometres in some cases, traveling at speeds up to about 100 km/h. If one such bird is flying at 100 km/h relative to the air, but there is a 30.0km/h wind blowing from west to east.
A) At what angle relative to the north-south direction should this bird head therefore that it will be traveling directly southward relative to the ground?
B) How long will it take the bird to cover a ground distance of 450km from north to south? (Note: Even on cloudy nights, many birds can navigate using the earth's magnetic field to fix the north-south direction.)
A rock climber throws a small first aid kit to anotherclimber who is higher up the mountain. What is the vertical height between the two climbers
Older freezers developed a coating of ice inside that had to be melted periodically; an electric heater could speed this defrosting process. What is the resistance of the wire
you suspect that an unknown is acetanilide mp 113.5-114oc. give a qualitative estimation of the melting point when the
A solid cylinder of mass 10 kilogram is pivoted about a frictionless axis thought the center O. Find how many radians does the cylinder rotate through in the first 5.0 seconds
A bullet of mass 7.00g is fired horizontally into a wooden block of mass 1.28kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.230.
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block's speed when it is at a height of 0.25 m above the base of the slide? Explain how far is the spring compressed?
A skater with an initial speed of 7.10 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. How far will the skater travel before coming to rest
A piece of moon rock reads 3.261 N on a scale when in air, but 2.074 N in a fluid having a density of 870 kg/m3. What is the density of the moon rock in kg/m3
An ideal gas has its pressure cut in half slowly, while being kept in a container with rigid walls. How much work was done during this process
A student is about to do a push-up. Her center of gravity lies directly above P on the floor, which is 0.9 m from her feet and 0.5 m from her hands. what is the force exerted by the floor on her hands
at three corners of a rectangle length 11.8 cm height 5.9 cm the following charges are located q1 upper left corner q2
A sphere of copper is subjected to 81.1 MPa of pressure. The copper has a bulk modulus of 130 GPa. By what fraction does the radius of the sphere change
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