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An electron accelerated from rest through a voltage of 470 V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 11 cm, what is the magnitude of the magnetic field?
A 1.00 kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg .
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 79.7-hp (horsepower) engine, How much work is performed by the car on the airplane during this time
In a Young's double-slit experiment the wavelength of light used is 476nm (in vacuum), Determine the angle that locates the dark fringe for which m = 0
In coming to a stop, a car leaves skid marks 77m long on the highway. Assuming a deceleration of 8m/s2, estimate the speed of the car just before braking.
The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
An undersea research chamber for aquanauts is spherical with an external diameter of 7.93 m. The mass of the chamber, when occupied, is 64800 kg. What is the buoyant force on the chamber
on turning a corner ,a motorist rushing at 44m/s find a child on road 100m away. he applies the brakes so as to stop the motorcar within 1m of child. calculate the time required to stop.
Light is refracted through diamond from air. If the angle of incidence is 30 °, what is the speed of light in diamond
question1a space station is in the shape of a hollow ring 450 in diameter. at how many revolutions per minute must it
A charge q= +5.80 x 10^-6 is located at the center of a regular tetrahedron (a four sided surface). find the electric flux through one face of the tetrahedron
An audio amplifier provides an alternating rms potential difference of 15.0V. A loudspeaker connected to the amplifier has a resistance of 10.4 ohm. what is the rms current in the speaker
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