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A typical power transmission line carries a current of 1000 A about 30.0 meters above the ground. The magnetic field generated at groundlevel by the current is a matter of concern to those who live nearby. (a) What is the strength of the field at ground level below one such wire?(b) The strength of the Earth's magnetic field is about5×10−5 T at sea level in middle latitudes. Howclose would you have to be to the power line to experience from ita magnetic field of equal strength?
1. blood flows in an aorta of radius 4.25mm at 35.0cms. calculate the volume flow rate.2. although the cross-sectional
A positively charged particle of mass 7.60 10-8 kg is traveling due east with a speed of 40 m/s and enters a 0.39-T uniform magnetic field. compute the magnitude of the magnetic force acting on the particle
A paperweight is made of a solid glass hemisphere with index of refraction 1.50. What length of line is seen by someone looking vertically down on the hemisphere
A boat with an engine speed of 12 m/s directs its motion straight east across a river that is flowing south at 3 m/s. What is the reultant speed and direction of the boat's path
A dolphin leaps out of the water at an angle of 36.1 ° above the horizontal. Find the magnitude of the vertical component of the velocity
A battery with an emf of 12.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 11.70 V, What is the energy dissipated in the battery's internal resistance in 4.20 minutes
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
A piece of thin spherical shell that has a radius of curvature of 90 cm is silvered on both sides. How far was the mirror moved
Determine the x and y components of the following three vectors in the xy plane. A 15-m displacement vector that makes an angle of 23° clockwisefrom the +y direction.
A charge q= +5.62 micro Coulons is located at the center of a regular tetrahedron ( a four- sided surface), Find the total electric flux through the tetrahedron
A particle of mass m in a three-dimensional harmonic oscillator of poterntial energy (m w^2 r^2)/2 has spectrum given by E=h bar w(2nr+l+3/2) where nr is the radial quantum number and l is the orbital angular momentum suppose the particle has charge ..
In outer space, a constant net force of magnitude 140N is exerted on a 30.4kg probe initially at rest. What acceleration does this force produce in m/s2
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