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A singly ionized charge travels undeflected through region I which consists of crossed electric and magnetic fields and velocity of 105 m/s (E ⊥ B) The value of the magnetic field in region I is 3 T. What is the value of the electric field in region I? Its mass is 4 x 10-27 kg. (b) The ion then enters another region II with the same velocity it attained in region I. Find the radius of its path. The magnetic field in region II is 10T
A 2.0-kg projectile is fired with initial velocity componentsV0x=30 m/s andV0y=40m/s from a pointon the earth's surface. How much work was done in firing the projectile
A 21.00 kg block is pushed up a frictionless inclined plane that makes an angle of θ = 39o with the horizontal direction. What force is required to move the block with constant speed? Suppose that the force is parallel to the surface of the plane.
The lifetime of the first excited state of a hydrogen atom is about 10 ns. What is the uncertainty in energy of the photon emitted when the atom returns to its ground state
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.90 m/s2 for 4.45 s, With what speed does the car then strike the tree
A line in the spectrum of a certain element is a doublet with wavelengths 526.4 and 527.2 nm. Calculate the minimum number of lines needed in a grating that will resolve this doublet in the second-order spectrum.
Two identical closely spaced circular disks form a parallel-plate capacitor. Transferring 2.9×109 electrons from one disk to the other causes the electric field strength between them to be 1.3×105 N/C. What are the diameters of the disks?
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. What is the tracer's half-life
a boeing 747 jumbo jet has a length of 59.7 m. the runway on which the plane lands intersects another runway. the width
The motion of a very massive object can be minimally affected by what would seem to be a substantial force. how long will it take the tanker, starting from rest, to reach a typical cruising speed of 6.0 m/s
A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage difference if charged by static electricity, What is the capacitance of the empty shelves if they have area 0.7 × 103 cm2
find the electric field outside a uniformly charged hollow cylindrical shell with radius r and charge density sigma an
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