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A capacitor is connected to the terminals of a variable frequency oscillator. The peak voltage of the source in kept fixed while the frequency is increased. Which statement is true?
1. The rms current during the capacitor decreases
2. The rms current during the capacitor increases
3. The phase angle among the current and source voltage changes
4. The current becomes zero when the frequency is large enough.
a point charge of -7.0 u c is at the origin.part a what is the electric potential at 3.0 m 0? express your answer
A system consists of two indistinguishable spin-1 fermions, both confined inside the same box of length L centred on the origin. The particles do not interact with each other.
A 2.50-kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released. The pendulum is designed to emit sound waves at a frequency of 440 Hz; However, as it swings toward and away from an o..
A total of 2.99·106 electrons are placed on an initially uncharged wire of length 2.25 m. a) What is the magnitude of the electric field a perpendicular distance of 0.494 m away from the midpoint of the wire? b) What is the magnitude of the accele..
what speed does boxcar have after 10 seconds.What is the object's displacement Dx.
By what factor would its kinetic energy decrease if the car traveled half as fast
a metal sphere of radius 5.00 cm is initially uncharged. how many electrons would have to be placed on the sphere to
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
A 3-kg mass has an acceleration of (4.0i - 3.0j )m/s^2. Onlytwo forces act on the mass. If one of the forces is ( 2.0i - 1.4j)N, what is the magnitude of the the other force ? Two blocks are accelerated across a horizontal frictionless surface . F..
A small rectangular loop of wire is located close to a long straight wire initially carrying a current I = 91 A (see figure below). Discover the average emf induced in the loop if the current in the wire reverses direction in a time interval of
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
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