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A basic telephoto lens also uses a combination of a converging lens and a diverging lens. Consider a particular telephoto lens consisting of a converging lens of focal length 40 mm positioned 25 mm from a diverging lens of focal length -20 mm.
1) Determine the distance between the diverging lens and the image plane.2) State the physical length of the camera.
Electrons can be “boiled off” of a wire by heating the wire to sufficiently high temperature (typically well over 1000? C). Typically the electrons leave the wire with a fairly low speed which can be approximated as zero
A point source generating a spherical sound wave at 50Hz, Calculate the amplitude of the particle velocity at r=3m from the source
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, where R = 1.80k? , and L = 420mH?, What is the phase angle between voltage and current
A disk spins with increasing angular velocity. Point Q on the disc is twice as far from the axis of rotation as in point P. Which point has the larger radial acceleration
The nucleus 60Co decays by the emission of an electron ( B 2). (Energetic gamma rays also accompany this decay and are used for the treatment of cancer.) What is the resulting nucleus
The small spherical planet called "Glob" has a mass of 6.06×1018 kg and a radius of 5.84×104 m. What was the initial speed of the rock as it left the astronaut's hand? (Glob has no atmosphere, so no energy is lost to air friction
A shell is launched at 140m/s 56.0 degrees above the horizontal. find the maximum height about the ground that the projectile reaches
orville walks 318 m due east. He then continues walking along the straight line, but in a different direction, and stops 164 m northeast of his starting point. How far did he walk during the second portion of trip and in what direction.
What is the mass of the block on the left. At what rate is the plate's area increasing when the radius is 50 cm? (Give your answer correct to 2 decimal places.)
The car that hits a concrete barrier and takes 0.3 seconds to stop.
on a trip to the colorado rockies you notice that when the freeway goes steeply down a hill there are emergency exits
can a photon and an electron of the same momentum have the same wavelengths? calculate their wavelengths if the two
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