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An airplane of wing span 40.0 m flying horizontally at a speed of 774 km/h due north in a region where the vertical component of the earth's magnetic field is 4.75 *10^-5 T.
a) Find the emf induced across its wing.
b) Which end of the wing is positive? Explain.
15. An object weighing 300 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. find the density of the object
A uniform door weighs 50-N and is 1.0 m wide and 2.70m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
The downward acceleration of a 74-kg stuntwoman near the end of a fall from a very high building is 5.5m/s2
A long cylindrical insulating shell has an inner radius of a = 1.42 m and an outer radius of b = 1.62 m, What is the magnitude of the electric field at a distance of r= 0.59 m from the axis
A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.98kg of water at 26.0 oC to 1.98kg of ice at -5.00 oC in 1 hour. How much wasted heat is rejected to the room in which the freezer sits
A 990-kg sports car collides into the rear end of a 2100-kg SUV stopped at a red light. The bumpers lock, the brakes are locked, What was the speed sports car at impact
When a single person shouts at a football game, the sound intensity level at the center of the field is 59.9dB. When all the people shout together, the intensity level increases to 111dB.
Find the rms speed and the average kinetic energy of a hydrogen atom at a temperature of 3.4x107 K. (At this temperature (3.4 x10^7)
As a soap bubble (n = 1.33) evaporates and thins, thereflected colors gradually disappear. What is the last color seen
A box starts from rest and is pushed a distance d = 1.25 meters along a frictionless ramp by a horizontal force, Fa, in 9.75 seconds. find the acceleration of the box as it slides up the ramp
A constant force of 46.3 N, directed at 28.7o from horizontal, pulls a mass of 14.7 kg horizontally a distance of 3.09 m
A woman inside an elevator is standing on a scale. Before the elevator starts moving the scale shows 50 kg, calculate the acceleration of the elevator if after the elevator starts moving upward the scale reads 70kg. What will the reading of the sc..
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