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A potential difference of 4.65 kV is established between parallel plates in air.
If the air becomes ionized (and hence electrically conducting) when the electric field exceeds 2.76×106 V/m , what is the minimum separation the plates can have without ionizing the air? (mm)
Light from a heliom-neon laser (wavelength 632.8 nm) diffracts when incident on a hair of thickness 0.040 mm. What is the angular width of the central diffraction maximum
A 3m-long, 300 steel beams extend horizontally from the point where it has been bolted to the framework of a new building under construction. A 73 construction worker stands at the far end of the beam. What is the magnitude of the torque about poi..
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = 38.8 cm. Precisely 35.7 cm behind this lens is a concave lens with the focal length f2 = -10.3 cm. The object to be photographed is 3.97 m in front o..
When water freezes, it expands about 8.73%. What would be the pressure increase inside your automobile engine block if the water in it froze
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
A stone has a mass of 6.0 x 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.90.
You have a mass of 77 kg and are on a 43 degree slope hanging on to a cord with a breaking strength of 209 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire..
A 22nF capacitor is in series with a 1.25 (M)(Ohm) resistor. The capacitor is initially uncharged when the series combination is connected across a 24.0V battery. obtain the maximum charge the capacitor will eventually attain
A ray of light is incident on a flat surface of a block off utilize quartz that is surrounded by water. The angle of refraction is 22.6°. Find the angle of reflection.
The magnetic flux passing through a single loop in a transformer changes at a rate of 2.3 Wb/s. Evaluate the voltage primary and secondary coil
A point P is on a rim of a wheel of radius 2.0m. At time t=0 wheel is at rest and P is on the x-axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s2 about the center O. Find out the time t, when P returns to an original position on..
An airplane is cruising at an altitude of 10 km. Model the air as an ideal fluid to find the speed of the stream of air flowing through the leak
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