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At a certain location, Earth's magnetic field of 53 µT is horizontal and directed due north. Suppose the net field is zero exactly 7.5 cm above a long, straight, horizontal wire that carries a constant current. What is
(a) the magnitude of the current (in A) and
(b) the angle between the current direction and due north?
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
Use the average value of the buoyant force to calculate an experimental value of the volume of all three objects in kg/m3
You and a friend are sitting in the bleachers of a major league baseball park,132m from home plate on a day when the temperature is 20° C. How much later does the other person hear the sound
The drill pipe has an outer diameter of 75 mm, a wall thickness of 6 mm, and a weight of 0.8 kN/m. If it is subjected to a torque and axial load as shown, determine the principal stresses and maximum in-plane shear stress
A skateboarder of mass 60.1 kg is riding her 3.89-kg skateboard at a speed of 5.21 m/s. She jumps backward off her skateboard, sending the skateboard forward at a speed of 7.53 m/s.
An inductor L = 0.0470 H and a 35.0 ? resistor are connected in series to a 3.70 volt battery and a switch. What is the potential difference across the resistor immediately after the switch is closed
A student sits on a rotating stool holding two 2.9-kg objects. When his arms are extended horizontally, Find the kinetic energy of the student before and after the objects are pulled in
A cell membrane is composed of lipid molecules and approximately 11 nm thick, what is the approximate capacitance of a spherical cell that has a diameter of 11mu or micro m
What was the ray's angle of incidence on the diamond. What should be the magnitude of , so that the net work done by it and the kinetic frictional force is zero.
A beam of neutrons that all have the same energy scatters from the atoms that have a spacing of 9.30×10^?2nm in the surface plane of a crystal
what is the maximum mass it can support in freshwater. find the maximum height of the projectile is equal to its horizontal range.
Two capacitors of capacitance 3C and 5C (where C = 0.06 F) are connected in series with a resistor of resistance R = 6.5. How long will it take the amount of charge in the circuit
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