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Question: A 6.80 H inductor with negligible resistance is connected across an ac source whose voltage amplitude is kept constant at 31.2 V , but whose frequency can be varied.
a) Find the current amplitude when the angular frequency is 100 rad/s?
b) Find the current amplitude when the angular frequency is 1000 rad/s?
a harmonic sound of wavelength 40cm is resonating in the first overtone of an organ pipe which is closed at one end and open at the other. what is the length of the pipe
A diver can change his rotational inertia by drawing his arms andlegs close to his body in the tuck position. After he leaves thediving board in the straight position (with some unknown angularvelocity), he pulls himself into a ball as closely as ..
The pilot of an aircraft wishes to fly due west in a 37.70 km/h wind blowing toward the south. The speed of the aircraft in the absence of the wind is 191 km/h.
A Projectile (Mass M) is launched at an angle (theta) with an initial speed u. Write expressions for angular momentum (L) and torque vectors (T) about the launch point. hence show that dL/dt = T. Assumptions: No Air Resistance and constant gravity
In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, find the maximum distance by which Healan is behind Laura
To stretch a certain spring by 3.00 from its equilibrium position requires 9.50 of work. What was the maximum force required to stretch it
The figure below shows a wire ring of radius a = 2.0 cm that is perpendicular to the general direction of a radially symmetric, diverging magnetic field. The magnetic field at the ring is everywhere of the same magnitude B = 3.4 mT, and its direct..
What velocity must be transferred to the spacecraft to crash it into the sun? Assume it is initially in a solar circular orbit, at the same distance from the sun as the Earth. What velocity must be transferred to the spacecraft so that it will escape..
Description of Physics - Mechanics - Force, A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3.00 m
A flask is filled with 1.50 L (L = liter) of a liquid at 98.0 °C. What is the coefficient of volume expansion of the liquid
A water skier, moving at a speed of 9.30m/s, is being pulld bya tow rope that makes an angle of 37.0o with respect to thevelocity of the boat. determing the work that it does in 12.0s
What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 222m.
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