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An AM radio station broadcasts at 750 kHz.
a) What is the wavelength of the radio wave in air?
b) If the radio wave is tuned to this station and the inductance circuit is 0.10 mH, what is the capacitance in the tuning circuit?
c) In the vicinity of the radio, the amplitude of the electric field is 040 V/m. The radio uses a coil of radius 1.8 cm with 60 turns. What is the maximum emf induced in the coil, assuming that it oriented for best reception? Assume that the electric fields are sinusoidal functions of time.
A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.60 T in a time of 0.45 s. The wire has a resistance per unit length of 3.3*10-..
A square plane 0.25 m on a side carries a charge of 10-4 C distributed uniformly over the plane. If the fragment starts from rest, how fast is it going 5 cm from the plane
A circular loop of conducting wire is placed in a magnetic field of 0.45T while the free ends of the wire are attached to a 30ohm resistor. What are the magnitude and direction of the current in the resistor
Two workers are sliding a 440kg crate across the floor. One worker pushes forward on the crate with a force of 390N, What is the crate's coefficient of kinetic friction on the floor
The nucleus of an atom can be modeled as several protons and neutrons closely packed together. Estimate the density of the nucleus of an atom
Ramon has a coherent light source with wavelength 579 nm. What is the minimum width of the screen if Ramon wants to display four interference maxima
a 2.30-cm-high object is situated 20.1 cm in front of a concave mirror that has a radius of curvature of 13.4 cm.
A molecule of HCl (dipole moment p = 3.60 x 10-30 Cm) and moment of inertia of 2.70 x 10-47 kgm2) is suddenly subjected to an electric field E at right angles to the direction of the molecule's dipole moment. what is the magnitude of the electric fie..
Consider an LC circuit in which the inductance is 345 mH and the capacitance is 0.13 muF. What is the resonant angular frequency
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. Determine the tension in the strings
To finance her community college education, Joanna takes out a Stafford loan for $4500. How much will she pay
a beam of light with red and blue components of wavelengths 670 nm and 425 nm respectively strikes a slab of fused
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