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A small but measurable current of 7.70 E-10 A. exists in a copper wire whose diameter is 0.05 cm. Calculate the electron drift speed (in meters/second).
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
a projectile of mass 0.212kg is shot from a cannon. The end of the cannon barrel is at height 6.4m, the initial velocity of the projectile is 9.3m/s. How long does it take the projectile to hit the ground
A 13.6 kg object on a horizontal frictionless surface is attached to a spring with k = 519 N/m. find the initial potential energy of the block-spring system
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B.
A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion
The Dyson sphere is an hypothetical spherical structure centered around a star. Inspired by a science fiction story, What is the net gravitational force Fin on a unit mass located on the inner surface of the Dyson sphere described in Part A
A 16.1-m length of hose is wound around a reel, which is initially at rest. The moment of inertia of the reel is 0.42 kg · m2, and its radius is 0.174 m. how long does it take to completely unwind the hose from the reel
A heat engine operates between two reservoirs whose temperatures are 139.3°C, What is the maximum efficiency of this engine
A uniform disk is constrained to rotate about an axis passing through its center and perpendicular to the plane of the disk. find the average angular acceleration that the disk experiences
Find the magnification of the heater element given that the mirror has a radius curvature of 46 cm and produces an image of the coils 2.6m away from the mirror
What is swimmer velocity relative to the bank
questiona high-speed flywheel in a motor is spinning at 450 rpm when a power failure rapidly occurs. a flywheel has
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