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Two infinitely long straight currents are parallel to z axis. One of them, carrying a current I1, intersects at the x-y plane at the point (x1, y1); the other, with current I2, intersects at the x-y plane at the point (x2, y2). Find the resultant B produced by them at any point (x, y, z).
A giant yo-yo of mass 360 kg measuring about 1.5 m in radius was dropped from a platform 60 m high, find the velocity of descent at the end of the fall
When a high-speed passenger train traveling at 170 km/h rounds a bend, engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 601 m ahead.
The image of a tree on a 35 mm color slide is 1.4 mm high. It is to be projected onto a screen 6 m from the slide, and is to appear 380 mm high. What is the magnification of the system
Basic science concepts in optics like Which types of electromagnetic radiation can be seen from the surface of Earth.
An ideal gas expands at a constant total pressure of 2.5 atm from 3.45 L to 6.70 L. What is the total work done on the gas in the process
Intense white light is incident on a diffraction grating that has 625 lines/mm. What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first order spectrum produced by the grating
Sheena can row a boat at 2.95 mi/h in still water. She needs to cross a river that is 1.17 mi wide with a current flowing at 1.79 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream.
A slide projector needs to create a 96 cm-high image of a 2.20 cm-tall slide. How far should you place the lens from the slide.
The position vector,r, in meters, of a particle moving in the x-y plane, is giving by the following equation: r=i(2t^2-8t-12)+j(2t^3-18t^2+48t+25), find the direction of the velocity vector at the instant
An electron ( mass = 9.11×10?31kg ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, If the accelerating force is constant, compute the acceleration of the electron
An oxygen molecule has a vibrational mode that behaves approximately like a simple harmonic oscillator with frequency 2.99 X 10^14 rad/s. Calculate the energy of the ground state
An empty parallel plate capacitor is connected between the terminals of a 9.44-V battery and charges up. what is the new voltage between the plates of the capacitor
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