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1. Two infinite lines of charge lie in the x-y-plane, parallel to the y-axis. Line 1 has linear charge density ?1 = 4.2 ?C/m and passes through x = -2.5 cm. Line 2 has linear charge density ?2 = 2.42 ?C/m and passes through x = +2.5 cm. Determine the magnitude and direction of the force on a charge q = -4.51 ?C, placed at the origin. 2.Imagine a Gaussian cube of side length l = 2.25 cm centered on the origin in the previous problem. What is the flux through the cube? 3.A ball of charge q = 2.25 ?C and mass m = 20 metric tons is suspended in mid-air between two large parallel plates of opposite charge. The electric field between the plates is approximately uniform. Determine the magnitude and direction of the electric field.
An open-open organ pipe is 84.2 cm long. An open-closed pipe has a fundamental frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe
A radio station broadcasts at a frequency of 92.0 MHz with a power output of 51.8 kW. what is the energy of each emitted photon
A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
The energy of the first excited state of a hydrogen atom is -0.34eV +/- 0.0004eV. What is the minimum average lifetime for this state
What is the force between two balloons with a negative charge of 2.6 x 10-10C if the balloons are 10.0 cm apart?
An archer shoots an arrow with a velocity of47.5m/s at an angle of50.5° with the horizontal. What is the initial speed of the apple
An object 2.0 cm high is projected onto a screen using a converging lens with a focal length of 35 cm. What is the distance of the lens from the screen
A 1200 crate slides 15 down a ramp that makes an angle of 30 with the horizontal.If the crate slides at a constant speed, how much thermal energy is created?
If a 2.00{rm kg} mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?
An elevator (mass 5000 ) is to be designed so that the maximum acceleration is 6.20×10?2. What is the maximum force the motor should exert on the supporting cable
A crystal is irradiated with X-ray photons with energies of 1.65 × 10-15 J. At what angles of incidence will the X-rays reflect from the crystal
Monochromatic light falls on two very narrow slits 0.045 mm apart. Successive fringes on a screen 5.00 m away are 6.2 cm apart near the center of the pattern. estimate the frequency of the light
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