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An electron in Thomson's apparatus moves perpendicular to a B-field along a path of radius12.15 cm. If imposition of an E-field of 18.90 mkV makes the path straight, find B.
Two free particles (that is, free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in ?quilibrium. Find out the location, magnitude, and sign of the third charge.
An electron is moving (at a particular instant) parallel to a wire with a speed of 3 × 10^5 m/s. The wire carries a current of 12 amps in the same direction as the electron moves. What is the force on the electron if it is 3 cm from the wire? (b) Des..
when a parachute opens the air exerts a large drag force on it. this upward force is initially greater than the weight
suppose that the speed of light in a vacuum were one million times smaller than its actual value c 3.00 x 102 ms. the
The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight.
A 0.145 kilogram baseball pitched at 39.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. find the average force between the ball and bat during contact
light of wavelength 659.9 nm is emitted by a star. the wavelength of this light as measured on earth is 660.9 nm. how
when the net force that acts on a hocey puck is 14 N the puckaccelerates at a rate of 48.0 m/s^2. determine the mass of the puck
A certain molecule has a dissociation energy of 4.69 eV. What is the minimum frequency photon that can dissociate it in PHz (peta Hz, 1015 Hz) to two decimal places
A tendon is 5.2 cm long, has a cross-sectional area of 0.00006 m2 and has an average elastic modulus of 1.2 GPa. It is stretched with a force of 2400 N, What is the tendon stress
A bullet is fired into a large stationary absorber and comes to rest. What is the weight of the bullet in kg
A laser used in cutting or drilling metals produces 10 ns pulses at 1.00 J per pulse. what is the peak light intensity at the spot
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