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Two filaments of current infinitely long and strait that have current with the same magnitude. find the magnetic field produced from both filaments at the mid point between them both. compare these
For a diffusion analysis where the temperature is not a fixed variable, calculate the diffusivity of nickel in iron at 800 degrees C.
Two small plastic spheres are given positive electrical charges. When they are 20.0cm apart, the repulsive force between them has magnitude 0.300 N. What is the charge on each sphere if the two char
A constantan strain gauge has a nominal 120 Ohm electrical resistance in a unstressed and unstrained state. If the strain is increased to .003 in/in, what is the electrical resistance under these c
As a laudably skeptical physics student, you want to test Coulomb\'s law. For this purpose you set up a measurement in which a proton and an electron are situated 891 nm from each other and you stud
For circular parallel plate capacitor whose radius is 0.1 m, and which the separation between the plates is 2mm, what is the capacitance of the capacitor?
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.8 m/s^2 for 4.3 seconds.
Two circuits are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 6.70 W of power, how much power does each bul
The potential difference between the "plates" is 82.3 mV. How much energy is stored in this capacitor?
The potential difference across a cell membrane is -87.8 mV. If the membrane's thickness is 19.0 nm, what is the magnitude of the electric field in the membrane? Assume the field is uniform.
What time does it take for the optical energy stored in a resonator of finesse F = 100, length d = 50 cm, and refractive index n = 1, to decay to one-half of its initial value?
An air-spaced Fabry-Perot interferometer has mirror spacing 0.15 mm and mirror reflectivity R = 0.99. It is used to measure the spectrum of the sodium doublet, which consists of two closely spaced
A GaAs diode laser has a cavity formed by the Fresnel reflections from the end facets of the GaAs chip, which is 0.8 mm long. If the laser wavelength (in air) is 850 nm, determine the approximate m
In a holography setup such as that of Fig. 15-5, the distance , and the distance . What must be the frequency width of the laser used? If the laser is a He-Ne width, what is the corresponding width
Now the elevator is moving downward with a velocity of v = -2.6 m/s but accelerating upward at an acceleration of a = 3.9 m/s2. (Note: an upward acceleration when the elevator is moving down means t
An electric dipole consists of charges +e and -e separated by 0.40 nm. It is in an electric field of strength 2.50 106 N/C. The (imaginary) line connecting the two charges forms a 32° angle wit
In a double-slit interference experiment, the wavelength is ? = 652 nm, the slit separation is d = 0.150 mm, and the screen is D = 36.0 cm away from the slits. What is the linear distance between t
You perform a double-slit experiment in order to measure the wavelength of the new laser that you received for your birthday. You set your slit spacing at 1.17 mm and place your screen 9.01 m from t
As an admirer of Thomas Young, you perform a double-slit experiment in his honor. You set your slits 1.15 mm apart and position your screen 3.29 m from the slits.
Calculate the x-component of the force exerted by B on C. Your response differs from the correct answer by more than 10%. Double check your calculations.
A positive charge of 1.100? C is located in a uniform field of 8.50×104 N/C. A negative charge of -0.400? C is brought near enough to the positive charge that the attractive force between the
A small object of mass 2.40 g and charge -15 µC "floats" in a uniform electric field. What is the magnitude and direction of the electric field?
Particle A of charge 4.00 10-4 C is at the origin, particle B of charge -5.00 10-4 C is at (7.00 m, 0) and particle C of charge 2.00 10-4 C is at (0, 4.00 m). (a) What is the x-component of the ele