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A converging lens has a focal length of 20 cm. A 1 cm tall object is placed 35 cm in front of the lens. Find the image location, size, and explain it
A professor's office door is 0.90 wide, 2.00 high, 4.00 thick; has a mass of 30, and pivots on frictionless hinges. A "door closer" is attached to door and the top of the door frame. When the door is open and at rest, the door closer exerts the torqu..
a 41-kg girl is bouncing on a trampoline. during a certain interval after leaving the surface of the trampoline her
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most of her body as a uniform cylinder. Estimate the skater's moment of inertia to two significant figures
In a tungsten atom, what is the kinetic energy of an L-shell electron ejected by a photon that was created during the M-K shell transition of the atom?
A certain gyroscope consists of a uniform disk with a 48 cm radius mounted at the center of an axle that is 12 cm long, what is the precession rate
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. Determine the angle of the total acceleration relative to the radial direct..
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
a wedge-shaped sliver of glass viewed from above is illuminated with 436-nm light. the sharp edge is dark. what is the
When 3.78 g of nonvolatile solute is dissolved in 300.0 g ofwater, the freezing point depression is 0.646 o C. Calculate the molar mass of the solute
a 2.00-in diameter rod 15 ft long elongates 0.12 in under a load of 60 kip. the diameter of the rod decreases 0.0004 in
a heating element using nichrome connected to a 230 v supply draws an initial current of 3.2 a which settles after a
Gas is contained in an7.4L vessel at a temperature of 20°C and a pressure of9.2atm. Determine the number of moles of gas in the vessel
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