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Experiments have shown that thought processes in the mind can be affected if the parietal lobe is exposed to a magnetic field with strength of 1.0 T. Compute how much current must a long, straight wire carry if it is to produce a 1.0 T magnetic field at a distance of 0.40 meter? (For comparison, a typical lightning bolt carries a current of about 20,000 Amp, which would melt most wires.)
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A stamp collector uses a lens with 7.3 cm focal length as a easy magnifier. The virtual image is produced at the normal near point (25 cm). How far from the lens must the stamp be placed? What is the expected angular magnification?
Unpolarized light falls on a stack of three polarized sheets. The transmission axes of the top and bottom sheets are at 90 degrees by respect to each other. The middle sheet has its transmission axis aligned at 45 degrees by respect to the top and bo..
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 1.42 × 109 W/m2. find the magnetic field in the electromagnetic wave emitted by the lase
If the wavelength of ultrasound in soft tissue is 0.308 mm, what is the frequency producing this wavelength
A 5.5kg block is initially at rest on a frictionless horizontal surface. It is pulled with constant horizontal force of 3.8 newtons. How far does it move in this time
In a parallel circuit I=10.0A. There are 4 resistors. R1=13ohms R2=7ohms R3=15ohms R4=21ohms. What is the voltage drop across each resistance
write a vbscript code lines that define a constant taxrate that is 25 a variable basepay that is 1000 and a variable
A 73 kg window cleaner uses a 17 kg ladder that is 5.1 m long. He places one end on the ground 2.4 m from a wall, What is the angle of this force on the ladder
Three capacitors are connected in parallel. Each has platearea A = 9.00×10-2 m2 and platespacing d = 1.00×10-3 m. What must be the spacing if the threecapacitors are connected in series
If a hot air balloon floats at a constant elevation (it has reached equilibrium) where the local atmospheric pressure is 98 kPa (abs) and outside air temperature is 285 K, and the hot air inside the balloon is at 400 K
A container holds 2.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.1x10-3 kg bullet with a speed of 750 m/s
While the repair shop works on your voltmeter, they loan you an unusual replacement: Rather than measuring the potential difference across a resistor, it measures the amount of charge that flowed, and the change in electric potential energy of tha..
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