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A small bird's wings can undergo a maximum displacement amplitude of 5.9 cm (distance from the tip of the wing to the horizontal). If the maximum acceleration of the wings is 13 m/s2, and we assume the wings are undergoing simple harmonic motion when beating, what is the oscillation frequency of the wing tips?
Hz
A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power, Find the current in the motor
The mass of an object is 332 g, and its volume is determined to be 25 cc. What is the mass density of the object
A blender is switched to a lower speed and the angular velocity of its blade decreases uniformly from 52 rad/s to 12 rad/s. Through what angle does the blade turn during this time
Boy is stands on a scale in an elevator that is accelerating upward. Scale reads 723.8 N. Find magnitude of the acceleration of the elevator
The weight of passengers on a roller coaster increases by 51 percent as the car goes through a dip with a 39 radius of curvature.What is the car's speed at the bottom of the dip.
A quasar 10 billion light years from Earth appears the same brightness as a star 5.9*10^4 light years away. How does the power ouput of the quasar compare with that of the star
A converging lens (f = 14.9 cm) is located 24.6 cm to the left of a diverging lens (f = -7.07 cm). Locate the final image of the stamp relative to the diverging lens
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
A rotating wheel requires 2.99-s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
An object falls from a height h from rest. If it travels a fraction of the total height of 0.6995 in the last 1.00 s, Find the height of its fall
What resistive force (assumed to be constant) does the wood exert on bullet? How long does it take the bullet to come to rest.
Two generators use the same magnetic field and operate at the same frequency. Find the coil radius r of this other generator
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