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When monochromatic light shines perpendicularly on a soap film (n =1.33) by air on each side, the second smallest nonzero film thickness for which destructive interference of the reflected light is observed is 296nm. Describe the vacuum wavelength of the light in nanometres?
an airplane is flying at v100ms along the straight line at an altitude h5000m. at the instant when it is over an
An 78.8-mH inductor and a 6.27-µF capacitor are connected in series with agenerator whose frequency is 367 Hz. Therms voltage across the capacitor is 2.22V. Determine the rms voltage across the inductor.
q1. a thermometer flashes the temperature in celsius and fahrenheit along with the time. if it flashes -4deg f what
A horizontal wire of length 0.13 m, carrying a current of 2.8 A, isplaced in a uniform external magnetic field. When the wire ishorizontal, it experiences no magnetic force. When the wire istilted upward at an angle of 23°, it experiences a magnet..
The area of a typical eardrum is about 5.0 × 10?5 m2. Calculate the sound power incident on an eardrum at the threshold of pain
When light with a wavelength 480 nm or shorter shines on a metal surface, a current is measured. A. What is the work function of this metal B. What is the maximum kinetic energy an electron will have if violet light (380 nm) shines on the surface
The Earth's radius is 6370 km . There is a downward-pointing electric field in the atmosphere above the Earth's surface, What is the flux of the electric field out of the Earth, What is the charge on the Earth
In 0.2s, a coil of die with 50 loops experiences an average induced emf of 9v due to a changing magnetic field perpendicular to the plane of the coil. what is the final strength of the field
What is the maximum torque on a 125 turn square loop of wire 18.0 cm on a side that carries a 46.0 A current in a 1.60 T field
A metal plate of area 0.15 meters squared is on top of a surface. The plate and surface are separated by a 0.3 mm film of lubricant. what is the dynamic viscosity
using your knowledge of statics discuss briefly why the magnitude and direction of the knee reaction force varies with
a car starts from the bottom of a hill with a slope of 10 degrees and travels with a constant velocity of 20m/s when its engine fails. Calculate the total time the car is in motion
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