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A seagull flies at a speed of 10m/s directly into the wind. Knowing that it takes the bird 25 min to travel 8km relative to the earth, find the velocity of the wind. How long will it take the seagull to travel a distance of 12km with the wind?
A shot-putter accelerates a 7.3kg shot from rest to 17m/s, If this motion takes 1.3s , what average power was developed
100.0 W tungsten filament bulb generates 95.0 W of heat, determine difference in temp. between inner and outer surface of glass
what speed does the rock have as it strikes the ground?
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.60 10-10 T. How much energy does this wave carry through the window
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A 3m long ladder leans against a frictionless wall. The coefficent of static friction between teh ladder and the floor is .40. What is the minimum angle the ladder can make
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. determine the mass of the lead block
A solid disk of mass m1 = 9.5 kg and radius R = 0.18 m is rotating with a constant angular velocity of ? = 38.0 rad/s. What average torque was exerted on the rod by the disk
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
An object is shot at 56 m/s horizontally off the roof of a building which is 55 meters above the ground. How long does it take the object to reach the ground in seconds
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
Luke and Leia are twins, and Luke immediately leaves after birth on a spaceship traveling at 65% of the speed of light, How old is Luke when he returns
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