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A strip of copper 10 mm wide and 900µm thick is placed in a uniform magnetic field B vec of magnitude 0.30 T, with B vec perpendicular to the strip. A current i = 23 A is then sent during the strip such that a Hall potential dissimilarity V appears across the width of the strip. Compute V. (The number of charge carriers per unit volume for copper is 8.47 multiplied by1028 electrons/m3.)
Given that the Moon period about the Earth is 27.32 days andthe distance from the Earth to the Moon is 3.84 x 10^8 m, estimate the mass of the Earth
A proton moves eastward in the plane of Earth's 5x10^-5 T magnetic equator so that its distance from the ground is constant. What is the speed of the proton?
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 35 days, find the angular speed of the neutron star
Starting from rest, a 5.4-kg block slides 2.10 m down a rough 30.0° incline. Determine the work done by the force of gravity
Cooling water from a river flows through the condenser (the low-temperature heat exchanger) at the rate of 1.2×108L/h (?30 million gallons per hour). If the river water enters the condenser at 18?C, what is its exit temperature
Krypton is a monatomic ideal gas. Suppose you have 4.0 moles of krypton at 293 K and 1 atm. How much work is involved in this process
a solonoid 4.0 cm in raduis and 4 m in length has 5000 uniformly spaced turns and carries a current of 5.0a. concider a
Archer fish often prey for flies that hover above the water. The index of refraction of water is 1.33. what would be a "safe" horizontal seperation for the fly
A sheet of glass is coated with a 496 nm thick layer of oil (n = 1.42). What is the color of the most part of transmitted light
Three capacitors all have the same capacitance. When they are wired in series, the equivalent capacitance is 57 ?F. what would the charge on the capacitors be
A tuning fork is sounded above a resonating tube (one end closed) which resonates at a length of 0.32 m and again at 0.91 m. What is the frequency of the fork
A football is thrown horizontally with an initial velocity of (14.8 m/s)x. Ignoring air resistance, the average acceleration of the football over any period of time is (-9.81 m/s2)y. Calculate the magnitude of the velocity at this time
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