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In a series R-L circuit, R=0.125 ohms, L=500 microhenrys and the battery's emf is 0.750 V.
(a) What is the energy stored in the inductor after a very long period of time (as t goes to infinity)?
(b) How much time is needed for the current to reach 75% of its eventual maximum value?
A flash of light is emitted at position x1 on the x-axis and is absorbed at position x2=x1+d. In a reference frame moving with velocity v along the x-axis: What is the spatial separation d' between the point of emission and the point of absorption ..
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
A 0.330-kg volleyball approaches a player horizontally with a speed of 16.0 m/s. What impulse is delivered to the ball by the player
When a single person shouts at a football game, the sound intensity level at the center of the field is 59.9dB. how many people are at the game
A train is moving parallel and adjacent to a highway with aconstant speed of 23 m/s. Ini- tially a car is 34 m behind thetrain, traveling in the same direction as the train at 34 m/s, and accelerating at 3 m/s2. What is the speed of the car just a..
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. A person's leg measures 39 cm between the knee and the hip, with an average leg diamete..
A current of 1mA is passed through a slab of semiconductor material of thickness 1mm with a magnetic field of 0.1 T applied in the perpendicular direction. Estimate the band gap energy for the material
Two particles P and Q are initially at rest 1.0 m apart. p hasa mass of 0.10 kg and Q has a mass of 0.30 kg. Describe the motion of the center of mass
A battery is connected in series with a R = 0.31 ? resistor and an inductor, as shown in the figure below. The switch is closed at t = 0. The time constant of the circuit is ? = 0.20 s, and the maximum current in the circuit is I = 7.9 A.
Spider silk has a Young's modulus of 4.0x10^9 N/m^2 and can withstand stresses up to 1.4x10^9 N/m^2. what angle does the web make with the horizontal
A "195-watt" light bulb uses an average power of 195 W when connected to an rms voltage of 120 V. What is the resistance of the light bulb
An airplane wing is designed so that the speed of the air across the top of the wing is 220 m/s when thespeed of the air below the wing is 205m/s. The density of the air is 1.29 kg/m3. What is the lifting force on a wing of area 30.0m2?
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