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A rod, with sides insulated to prevent heat loss, has one end immersed in boiling water (T = 100degreesC) and the other end in a water-ice mixture. The rod has uniform cross-sectional area 7.05cm2 and length 87 cm. The heat conducted by the rod melts the ice at a rate of 1 gram every 11seconds. What is the thermal connectivity of the rod? (Recall that the heat of fusion of water is 3.34 x105J/kg)
What is amplitude of the electric component of the signal
You sing into a well and find that the well resonates at frequencies of 231 Hz and 273 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode
A block is launched with speed up v0 a slope making an angle ? with the horizontal, Find an expression for the distance d the block travels along the slope
An aluminum wire carrying a current of 4.0 A has a cross-sectional area of 9.0 10-6 m2. Find the drift speed of the electrons in the wire
The maximum distance from Earth to the Sun (at our aphelion) is 1.521 x 10^11 m and the distance of closest approach (at perihelion) is 1.471 x 10 ^11 m. Assume the Earth's orbital speed at perihelion is 3.027 x 10 ^ 4 m/s. (overlook the effect of th..
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.60 m/s at an angle of 18.0° below the horizontal. How far horizontally from the base of the building does the ball strike the ground
When a converging lens is utilized in a camera (as in the top figure), the film should be at a distance of 0.210 m from the lens to record an image of an object that is 4.00 m from the lens.
The one-dimensional parity operator pi is defined by pi psi (x) = psi (-x) In other words, pi changes x into –x everywhere in the function. Is pi a Hermitian operator? For what potentials V(x) is it possible to find a set of wavefunctions which are e..
A guitar string is 91 cm long andhas a mass of 3.6 g. The distance from the bridge to the supportpost is L = 60 cm, What is the frequency of the second overtone
You have a spring and you measure its natural length to be 10.0 cm. When you hang the massless spring from the ceiling and attach a 4kg mass to it, What is the period of this motion in seconds
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. What is the work done by the field on the electron
the maximum strength the magnetic field in an electromagnetic wave is 4.8 x 10-6 t. what is the maximum strength of the
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