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1. What is the magnification of an astronomical telescope whose objective lens has a focal length of 80 cm and whose eyepiece has a focal length of 2.3 cm?
2. What is the overall length of the telescope when adjusted for a relaxed eye?
In the days before compact discs and MP3 players (ancient history!), music was recorded in scratches in the surface of vinyl-coated disks called records. Find the centripetal acceleration of a point on the edge of the record
To water the yard, you use a hose with a diameter of 3.5cm . Water flows from the hose with a speed of 1.5m/s. with what speed does water spray from the hose
if a block of continental crust and a block of oceanic crust are both 10 km thick and are floating on the
a) A 25 O resistor is connected in series with a 7 µF capacitor and a battery. What is the maximum charge to which this capacitor can be charged when the battery voltage is 9 V? Initially the capacitor has zero charge. At what time during the char..
q1. a simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 nm.
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. What is the current coming from the wall socket
An object is placed in front of a convex mirror with a 22.6-cm radius of curvature. A virtual image half the size of the object is formed. At what distance is the object from the mirror
A 32 kg child sits at one end of a3.4 m long seesaw. Where should her 65 kg father sit so the center of mass will be at the center of theseesaw?
a 2-kg ball is moving with a constant speed of 5 ms in a horizontal circle whose radius is 50 cm. what is the
In a Young's double-slit experiment, the wavelength of the light used is 535 nm (in vacuum), Determine the angle in degrees that locates the second dark fringe
A duck is floating on a lake with 23% of its volume beneath the water. What is the average density of the duck
Two curves on a highway have the same radii. However, one is unbanked and the other is banked at an angle ?. Find the angle of the banked curve
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