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Sound with a frequency 700 Hz from a distant source passes through a doorway 1.07 m wide in a sound-absorbing wall. Find the number of the diffraction minima at listening positions along a line parall
An 8.00-mH inductor and a 2.00ohm resistor are wired in series to an ideal battery. A switch in the circuit is closed at time 0, at which time the current is 0. determine the time constant for the c
After a hard rain, you walk out into the parking lot and notice an oil sheen on top of a puddle of water. When viewed from directly above, What is the minimum thickness of the oil
Laser light is shown through a diffraction grating with a line density of 880 lines per mm. What is the wavelength of the laser
a 2.3 kg object attached to an ideal spring is undergoing simple harmonic motion. its displacement is given by function, what is the maximum accleration of the object
A 50 kg child takes a ride on a roller coast . the coaster maintains a constant speed of15 m/s as it moves around a loop of radius 10m. what is the centrupetal acceleration of the child
A magnifying glass has a focal length of 8cm. How close to an object do you need to place the magnifying glass, What type of image is this and what is its magnification
Your telescope has an objective lens with a focal length of 0.80m . You point the telescope at the moon, What is the angular magnification of the moon
A bar magnet with its north pole pointing toward a coil of wire with a cross-sectional area of 0.020 m2, find the magnitude of the induced emf in the coil of wire
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 40.00 degreee prism made of crown glass
A thin film of MgF2 (n=1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 625nm.
A 60 gram iron at 60o C is dropped into 200 gram of water at 20o C, What is the final equalibrium temperature of the system
An object's true weight is 135N. When it is completely submerged in water, what is the density of the object
A spherical water drop 2.4 µm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 3696 N/C.
A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm. compute the self-inductance of this solenoid
A ball leaves a table with an initial horizontal velocity of 2.4 m/s. The height of the table is adjustable. What is the horizontal distance between the two landing locations of the ball
Given a wave produced by a simple harmonic oscillator whose displacement in meters is given by the equation [y = 0.3cos(36?t)]
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, What is the vacuum wavelength of the light
A nonreflective coating (n = 1.35) covers the glass (n = 1.52) of a camera lens. determine the minimum nonzero thickness that the coating can have
The semiconducting compound CdTe is widely used for infrared light emmiting diodes (LEDs). find the frequency of light emitted by a CdTe LED
In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00 cm. Which point does the proton have a hi
The activity of a radioactive source decreases by 5.2% in 28 hours. What is the half-life of this source
A 5.16 multiply.gif 10-5 H solenoid is constructed by wrapping 64 turns of wire around a cylinder with a cross-sectional area of 8.80 multiply.gif 10-4 m2, Determine the change in the length of the