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A short bar magnet placed with its axis at 60 degrees with a uniform external magnetic field of 1.0T experiences a torque of magnitude 5x102 J. What is the magnitude of magnetic moment of the magne
How far was the laser originally from the object in meters? Assume the small angle aprproximation applies.
In a long solenoid, the density of the wire is 180 turns/cm. If the current in the wire is 0.680A, what is the strength of the magnetic field within the solenoid?
Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart, what is the force per unit length between the wires? is the force attractive or repulsive? s
The crew of an enemy space craft attempts to escape from your spacecraft, by moving away from you at 0.281 of the speed of light. But all is ot lost! You launch a space torpedo toward the foe at 0.3
A 513 - uF capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 82.9 V to 20.7 V in 4.43 s. Find the resistance of the resistor in kilohms
The near and far points of a person are at 40cm and 250cm respectively. Find the power of the lens he/she shoeld use while reading at 25cm. With this lens on the eye. what maximum distance is clearl
Calculate the magnitude of the force required to give a 0.145-kg baseball an acceleration a=1.00m/s2 in the direction of the baseball's initial velocity when this velocity has a magnitude of 0.900c.
Unpolarized light passes through two polarizers. The inensity of light coming out from the second polarizer is S2=33% of the intensity of te unpolarized light S0. What is the angle between the trans
Soap bubbles can display impressive colors, which are the result of the enhanced reflection of light of particular wavelengths from the bubble's walls. For a soap solution with index of refraction o
A glass lens (nglass = 1.52) has a 139 nm thick anti-reflective film (nfilm = 1.29) on one side. Light, moving through the air, is normally incident on the lens passing through the film. What is the
Measuring distances to high precision is a critical goal in engineering. Numerous devices to exist to perform such measurements, with many involving laser light. Shining light through a double slit
A. Find the frequency in terahertz of visible light with a wavelength of 481 nm in vacuum. B. What is the wavelength in centimeters of electromagnetic microwave radiation whose frequency is 4.99 GHz?
A d-cell flashlight has an emf of 1.50v an internal resistance of 0.12 ohms and a load provided by the resistor R if the total current is 3.5 A what is the terminal voltage of the battery. Show work
Two pieces of optically flat glass (n = 1.50) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes ar
The half-life of a radioactive substance has been defined as "the time it takes for half of a given number of radioactive nuclei to decay". Given this definition, why won't a radioactive substance d
Explain why almost all naturally-occurring isotopes have a greater number of neutrons than protons.
A Wooden box item sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.5. You grab one end of the board and lift it up, keeping the other end of t
Explain why it takes less energy to ionize a hydrogen atom when it's in an excited state, rather than when its in the ground state
The barrel and tube are filled with water (to the top of the tube). Calculate the ratio of the hydrostatic force on the bottom of the barrel to the gravitational force on the water contained in the
One day George was experimenting with friction and attempting to pull Al across the surface of a floor. George applies a pulling force of 60 N and Al weighs 103 N. a. What is the reaction force?
The generator of a series RCL circuit is set to a very low frequency. Describe what happens to the impedance, rms current, and power output of the circuit as the generator frequency is steadily rais
A massive ring (radius = a and mass = M) lies on the xy plane. Calculate the force F on a test mass m at position z on the z axis. Now assume a = 1 and GMm/a2 = 1 in some system of units.