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A long straight solenoid with a cross-sectional area of 6.15 cm2 is wound with 46 turns of wire per centimeter, and the windings carry a current of 0.240 Amp. A secondary winding of 2 turns encircles the solenoid at its center. When the primary circuit is opened, the magnetic field of the solenoid becomes zero in 5.25 x 10-2 second. Determine the average induced emf in secondary coil?
You are using a standard microscope with a 0.10NA 4x objective and switch to a 0.65NA 40x objective. What are the acceptance angles for each
Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 42° to the horizontal, What is the coefficient of kinetic friction between the child and the slope
The wavelength of red helium-neon laser light is 632.8 nm. What is the wavelength of the laser light in the class that has an index of refraction of 1.5 in units of nm, What is the speed of the laser light in the glass in units of 10^8 m/s
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 10 m and, in starting, rotates according to ? = 0.30t2, where t is in seconds and ? is in radians. (a) When t = 15.0 s, what is the magnitude of the astronaut's angular v..
The gauge pressure in a helium gas cylinder is initially 26atm. What fraction of the original gas remains in the cylinder
Two adjacent sources each emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved thus that an observer in front of the sources hears no sound?
A beam of light is incident on a plane mirror at an angle of 30 degrees to the normal of the mirror. find the angle between the incident beam and reflected beam
Four identical 7 mC charges are placed on a neutrally- charged penny, Determine the resulting potential in the center of the penny due to the four charges
A small statue is recovered in an archaeological dig. Its weight is measured to be 2.1 lb and its volume 0.06 ft3, What is the statue's weight density
A Carnot air conditioner maintains the temperature in a house at 294 K on a day when the temperature outside is 308 K
A rock is thrown vertically upward from ground level at time t = 0. At time t = 1.8 s it passes the top of a tall tower, What is the height of the tower
what is the new force between the objects. if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4*10^30N.
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