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A wall consists of 2 layers of material: brick in front of an equal thickness of wood. If the respective thermal conductivities of the brick and wood are 1.3 j/m-s-C and 0.15 J/m-s-C, how does the temperature gradient across the wood compare to the gradient across the brick?
An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151oC
q1. on a frictionless horizontal surface. the spring is compressed 4.0 cm and released from rest.a determine the
A laboratory ultracentrifuge is designed to produce a centripetal acceleration of 5.0 x 10^6 g at a distance of 4.00cm from the axis. What angular velocity in rev/min is necessary.
There are 3 force vectors acting upon a central mass of m = 2.5 kg. What is the magnitude and direction of the acceleration
A simple pendulum has a mass of 0.650 kg and a length of 2.00 m. It is displaced through an angle of 7.0° and then released. What is the maximum speed of the bob
q1. for the beam given in the figure below assume that the material is astm-a514 steel with elastic modulus and e
A puck of mass m1 = 1.50 kg slides in a circle of radius r = 20.0 cm on a frictionless table while attached to a hanging cylinder of mass m2 = 2.50 kg by a cord through a hole in the table
Two narrow slits 50 micrometers apart are illuminated with light of wavelength 500 nm . What is an angle of the m=2 bright fringe in radians? in degrees.
the total volume of a new house is 800 m3. before the heat is turned on the air temperature inside is 10degc and the
A quasar 10 billion light years from Earth appears the same brightness as a star 5.9*10^4 light years away. How does the power ouput of the quasar compare with that of the star
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 65 kg and exert average forces of 1350 N horizontally. What is the acceleration of the two teams
Derive the speed of a satellite in a circular orbit of radius R about planet of mass M, show the connection between v and T (orbital period)
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