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Two lenses that are L = 37 cm apart are used to form an image, as shown in Figure 26-52. Lens 1 is diverging and has a focal length f1 = -7 cm; lens 2 is converging and has a focal length f2 = 17 cm.
(a) Determine the distance from lens 1 to the final image. (Include the sign of each answer.)
(b) What is the magnification of this image?
The pilot of an airplane travelling 200 km/h wants to drop supplies to flood victims isolated on a patch of land 165m below. The supplies should be dropped how various seconds before plane is directly overhead.
A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh..
Air in a cylinder is compressed to one-tenth of its actual volume without change in temperature. Obtain what percentage of the molecules has escaped
a ray of light traveling through air encounters a 1.4 cm-thick sheet of glass at a 38 degree angle of incidence.how far
To push a 32 kg crate up a frictionless incline, angled at 34° to the horizontal, a worker exerts a force of 280.6 N, parallel to the incline. What is the total work done on the crate
What is the relationship among electric field and potential? Can one use energy conservation with electricity concepts? What is the dissimilarity between potential and potential difference?
512 g of an unknown metal at a temperature of 15 degrees celsius is dropped into a 100 g aluminum container holding 325
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
At serve, a tennis player aims to hit the ball horizontally. What minimum speed is required for the ball to clear the 0.9 m highnet about 15 m from tge server
An undersea research chamber is spherical with an external diameter of 3.50 . The mass of the chamber, when occupied, is 21900 . It is anchored to the sea bottom by a cable. What is the buoyant force on the chamber? -Found to be 224410.2 N ***What is..
The work done by an external force to move a 6.50 uC charge from point a to point b is 0.0240 J. The charge started from rest, Find the potential difference, Vba between points
The drive shaft AB of an automobile is to be designed as a thin-walled tube. The engine delivers 125 kW when the shaft is turning at 1500 rev/min. Determine the minimum thickness of the shaft's wall
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