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Determine the energies and speeds of electrons in circular Bohr orbits in a hydrogen-like atom using the relativistic expressions for kinetic energy and momentum.
In an RLC series circuit the phase angle between thecurrent and voltages is 30 degrees. If the AC frequencydoubles, what is the resulting phase angle
a determine the capacitance of two concentric spherical shells of radii r1 and r2. b show that when the radii are
A steel rod is 3.000 cm in diameter at 25° C. A brass ring has an interior diameter of 2.992 cm at 25° C. At what common temperature will the ring now slide onto the rod?
a large balloon of mass 220 kg is filled with helium gas until its volume is 321 m3. assume the density of air is
during heavy rain a section of a mountainside measuring 5.4 km horizontally perpendicular to the slope 0.40 km up along
Two blocks are connected by a very light string passing over a massless and frictionless pulley (Fig. E6.7). Traveling at constant speed, the 20.0-N block moves 75.0 cm to the right and the 12.0-N block moves 75.0 CIJl downward.
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
Four point charges, Q1(-15,0,15), Q2(15,0,15), Q3(15,0,-15) and Q4(-15,0,-15) in cartesian coordinates are surrounded with air. If charges Q2 = -Q3 = 2 microCoulomb, Find the forces applied to each point from other charges
irplane A , starting from rest with constant acceleration, requires a runway 600m long to become airborne. How long must the runway be for airplane B
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 50.0m/s, and it leaves the bat traveling to the left at an angle of 30 degrees above horizontal with a speed of 65 m/s. If the ball and bat a..
A transformer consisting of two coils wrapped around an iron core is connected to a generator and a resistor, as shown in the drawing. There are 11 turns in the primary coil and 19 turns in the secondary coil. The peak voltage in the resistor is 65 V..
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