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The filament of a certain lamp has a resistance that increases linearly with temperature. When a constant voltage is switched on, the initial current decreases until the filament reaches its steady-state temperature. The temperature coefficient of resistivity of the filament is 3.9 times 10-3 K-1. The final current through the filament is one- eighth the initial current. What is the change in temperature of the filament?
A satellite is in elliptical orbit with a period of 6.12 x 104 s about a planet of mass 8.14 x 1024 kg. What is its angular speed at apocenter
Considering just the Sun and Jupiter, determine the radius of the circular orbit the Sun makes about the Sun-Jupiter center of mass
A thin spherical shell of silver has an inner radius of 2.20 10-2 m when the temperature is 17° C. Find the change in the interior volume of the shell
A jet plane at take-off can produce sound of intensity 9.90 W/m^2 at 30.3 m away. What power of sound does the jet produce at take-off
Starting from rest, a 40 kg body reaches a speed of 8.0m/s in 2s. Calculate the force acting on the body?
A VW Beetle goes from 0 to 99.0 mi/h with an acceleration of +3.90 m/s2. How much time does it take for the Beetle to reach this speed
A muon is created at the top of Mount Kanchenjunga (height 8,600 m) and travels at constant speed to sea level, what is the height of Mount Kanchenjunga
A bucket of water with a mass of 2kg is attached to a rope that is wound around a cylinder. The cylinder has a mass of 3 kg and is mounted horizontally on frictionless hearings. The bucket is released from rest.
Find the force acting on the roof of a 7m x 7m airtight building due to the difference in air pressure created during a hurricane with 78 m/s winds. A large open tank contains liquid with a density of 1200 kg/m3 at a depth of 10 m. A 5 x 10-3 m2 p..
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 4.60rad/s and? = 0.795rad/s3, Calculate the angular acceleration as a function of time
A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section, Calculate the smaller section's pressure
Suppose an astronomical telescope is being designed to have an angular magnification of 31.6. If the focal length of the objective lens being used is 84.5 cm, Find the required focal length of the eyepiece
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