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What resistance would have to be connected in series with a 3 V lamp in a 28 V circuit when the operating current of the lamp is 0.5 A? What is the operating resistance of the lamp?
An automobile engine takes in 4000 J of heat and performs 1100 J of mechanical work in each cycle. How much heat is "wasted" in each cycle
A block of mass M=0.20 kg is attached to a spring with force constant k=12.0 N/cm. Calculate the period the resulting oscillations and the total energy of the system assuming no damping
A rifle with a weight of 30 N fires a 3.0 g bullet with a speed of 210 m/s. Find the recoil speed of the rifle
An electron is accelerated through a potential difference of 10 Megavolts. By what factor has the mass of the electron increased
Air that initially occupies 0.144 m3 at a gauge pressure of +70 kPa is expanded isothermally to atmospheric pressure, Compute the work done by the air
A 3.6- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 255 rad/s2, How long is the plane
A solid uniform 3.25 kg cylinder, 65.0 cm in diameter and 12.4 cm long is connected to a 1.5kg weight over two massless frictionless pulleys. How fast is the cylinder turning at this instant
A thin soap film (n = 1.35) is suspended in air. The spectrum of light reflected from the film is missing two visible wavelengths of 490.8 nm and 589.0 nm, What is the thickness of the soap film
A certain spring can withstand a maximum tension of 9.0 lbwithout breaking. What is the speed of the stone as the spring breaks
A series RCL circuit contains a 24.7-? resistor, a 1.95-?F capacitor, and a 6.02-mH inductor. When the frequency is 2870 Hz, what is the power factor of the circuit
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.605m from the axis of rotation of the stool. What is the initial angular momentum of the system
A surfer is riding a wave. Suppose she starts at the top of the wave with a speed of 1.87 m/s, how much work is done by the (non-conservative) force of the wave
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