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A battery has an internal resistance of 0.74. A number of identical light bulbs, each with a resistance of 27.380, are connected in parallel across the battery terminals. The terminal voltage of the battery is observed to be one-half the emf of the battery. How many bulbs are connected?
Time standards are now based on atomic clocks. A promising second standard is based on pulsars, what is the associated uncertainty
An electron has an initial velocity of 2.00 106 m/s in a uniform 5.00 105 N/C strength electric field. How far does the electron travel before coming to rest
One beam so protons is moving with a speed close to speed of light, inside a magnetic field with a strength of 12T on z-direction. Calculate the magnetic force in vectorial form
A wheel is rotating freely at angular speed 270 rev/min on a shaft whose rotational inertia is negligible. What fraction of the original rotational kinetic energy is lost
Four identical metallic objects carry the following charges: +1.79, +6.21, -4.16, and -9.41C. The objects are brought simultaneously into contact, What is the final charge on each object
A 720-kg race car can drive around an unbanked turn at a maximum speed of 43 m/s without slipping. The turn has a radius of 160 m, What is the coefficient of static friction between the track and the car's tires
A dedicated sports car enthusiast polishes the inside and outside surfaces of a hubcap that is a thin section of a sphere. How far is her face from the hubcap
A 1.85 kg mass is attached to a light cord that is wrapped around a pulley of radius 2.55 cm, Find the moment of inertia of the pulley
A parallel-plate capacitor has circular plates of 9.27 cm radius and 1.79 mm separation. Calculate the capacitance in picofarads (pF)
A satellite is in a circular orbit around the Earth at an altitude of 2.20 * 106 m. Find the acceleration of the satellite
Since the ends are open, the boundary conditions force the standing wave (representing the displacement of air molecules) that is produced in the bugle to have antinodes at the open ends of the bugle
questiona cockroach of mass m lies on the rim of a uniform disk of mass 5 m that can rotate freely about its center
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