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When a human hair is held in front of a laser, a diffraction pattern is formed 1.50 m away from the hair. The first dark fringes on either side of the bright spot are 5.22 cm apart. What is the thickness of the hair?
A transformer has the voltages 121 Vpri and 45 Vsec. What is the current flowing in the secondary
A proton accelerates from rest in a uniform electric field of 524 N/C. What is the magnitude of the acceleration of the proton
Standing waves on a 1.7m long string that is fixed at both ends are seen at successive frequencies of 36 Hz and 54Hz A) What is the fundamental frequency B) What is the wave speed
An electric field is E=(200 N/C) i in the region x>0 and E=( - 200 N/C) i in the region x
The Hubble Telescope orbits the earth in a near circular orbit of about 585 km above the Earth's surface. find the magnitude of the centripetal acceleration of the satellite
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
What is the acceleration (magnitude and direction) of pebble during the downward motion.
What is tension T in each of the cables
A spring is initially compressed by 17.5 cm. If it takes 7.166 J of work to compress the spring an additional 3.5 cm, what is the spring constant of the spring
A nut is held in the jaws of a pair of pliers. The nut is 25 mm from the pivot of the pliers and a force of 10 N is applied to each handle 150 mm from the pivot
The exhaust temperature of a Carnot heat engine is 305°C. What is the intake temperature if the efficiency of the engine is 32%
In Figure 20.12, a small particle of charge q = -7.0 x 10^-6 C and mass (m = 3.1x10^-12) has velocity (Vo = 9.4x10^3 m/s) as it enters a region of uniform magnetic field. The particle is observed to travel in the semicircular path shown, with radius ..
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