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Two resistanceless rails rest 37 cm apart on a 4.0 degree ramp. They are joined at the bottom by a 0.55 ohm resistor. At the top a copper bar of mass 0.055 kg (ignore its resistance) is laid across the rails. The whole apparatus is immersed in a vertical 0.75 T field. What is the terminal (steady) velocity of the bar as it slides frictionlessly down the rails?
The electric field everywhere on the surface of a charged sphere of radius 0.470 m has a magnitude of 865 N/C, find distribution of charge inside the sphere
A typical adult ear has a surface area of about 2.10 10-3 m2. The sound intensity during a normal conversation is about 3.20 10-6 W/m2 at the listener's ear. How much power is intercepted by the ear
A 0.0017T magnetic field and a 5.7 x 10^3 N/C electric field both points in the same directions. Determine the magnitude and directions of the net force on the charge
A ball is dropped from a height of 1.50 m and rebounds to a height of 1.20 m. Approximately how many rebounds will the ball make
The total energy contained in a closed, sealed, rigid can of tuna is 3000. J with a total entropy of 2.8330 J/K. The ground state total energy, total entropy, and temperature of the system are 100.0 J, 0.0275 J/K, and 20.0°C,
In an interstellar gas cloud at 48.2 K, the pressure is 1.16 x 10-8 Pa. what is their mean free path
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 21 m/s, What is the initial angle of the cannonball with respect to the ground
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = %u221228.0 cm). How far is the object from the converging lens
The coefficient of static friction between the block and table's surface is &mu s = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan & theta = n2. What is the minimum value of mass, n3 Kg t..
A long, straight wire carries a current I1=3.8 A and is distance h=17.4 cm from a rectangular current loop that carries a current I2=1.8 A. DETERMINE the force exerted by the current loop on the wire
A copper wire has a 25 m-ohmic resistance at 20 degrees C. When the wire is carrying a current, What is the change in the wire's resistance
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction
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