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A meter stick is colored blue and white in 10 cm segments and suspended from the ceiling by two thin strings as shown. What is the ratio T1/T2 equal to?
a microscope has an objective lens with an aperture diameter of .60 cm. a monochromatic light source of wavelength 580
A resistance R carries a current I = (5 A) sin 120 ?t + (10 A) sin 240 ?t. What is the rms voltage across the resistor
A wire has a diameter of1.7 mm and length of 1.3 m. If it's resistance is 15 m(Ohms), What is the restivity of the metal from which it is made
The critical angle for an air-glass interface is 65.3degrees. When a light ray and air is incident on this interface, the reflected ray is 100% polarized. What is the angle of refraction of that ray
Theoretically the most efficient engine possible is: a, porsche carrera special engine, b. carnot cycle heat engine, c. cummins diesel d. wankel engine
Approximately how much larger would the radius of a star with the same surface temperature of the Sun (5800 K) have to be before it could be classed as a) a giant super star b) a supergiant star
you look through a camera toward an image of a hummingbird in a plane mirror. the camera is 4.10 m in front of the
The position of a particle moving along the x axis isgiven by x = 6.0t2 -1.0t3, where x is in meters andt in seconds. What is the position of the particle
A baseball is hit into the air at an initial speed of 36.6m/s and an angle of 50.0 degree above the horizontal. calculate what must be his average speed
An alpha particle with kinetic energy 17 MeV makes a head-on collision with a lead nucleus at rest. What is the distance of closest approach of two particles.
a an electrostatic field line is a continuous curve. that is a field line cannot have sudden breaks. why not?b explain
What is the magnitude of the electric field at this point?
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