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A manufacturing plant discovers that its electrical load due to the large numbers of motors is largely an inductive reactance equivalent to an inductance of 0.23 H. What capacitance would then need to be placed in series so that the power factor is a maximum? Assume 60Hz and 220 V. (10)
a 8.2 kg mass hanging from a spring scale is slowly lowered onto a vertical spring.part a what does the spring scale
A hydrogen atom emits a photon of energy 3.4 eV. If the atom is at rest before emitting the photon, what is the speed of the atom after emission?
When a 6.0 µF capacitor is connected to a generator whose rms output is 30 V, What is the frequency of the source
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
To transmit only portions of an input wave lying on one side of an amplitude boundary, you would use a.
find the speed and direction of a proton passing through the origin and where the magnetic fields are: B1=1.0x10^-13 (j hat) T at (x,y,z)= (1,0,0) in mm, B2= -1x10^-13 (i hat) at (0,1,0) in mm
A motorcycle has a constant speed of 21.0 m/s as it passes over the top of a hill whose radius of curvature is 132 m. The mass of the motorcycle and driver is 343 kg. Determine the magnitude of the normal force that acts on the cycle.
A body oscillates with simple harmonic motion according to x = (8.5 m) cos[(5.0pi rad/s)t + pi/3 rad]. What is the phase of the motion
A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.620.
Describe the motion of a ball in a bus when the bus accelerates foward as it might be perceived by a person standing on the ground outside the bus
question1a car comes to a bridge throughout a storm and finds the bridge washed out. the driver should get to the other
an electron starts from rest 0.05m from the centre of a uniformly charged sphere of radius 0.03m. if the sphere carries
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