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An air-cored solenoid with length 30 cm, area of cross-section 25 cm2 and number of turns 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10?3s. How much is the average back emf induced across the ends of the open switch in the circuit? Ignore the variation in magnetic field near the ends of the solenoid.
Determine the location of the center of mass of the molecule as measured from the hydrogen atom (Chlorine is 35 times more massive than hydrogen.).
Neon is a monatomic gas with a molar heat capacity at constant volume of 12.66 J/(mol · K). what is the final temperature of the neon
A copper rod of length 0.78 m is lying on a frictionless table (see the drawing). What must be the direction of the current in the copper rod
a student argues the followingwe know that vmax aomega. so if we know the position of a mass on a spring we can
A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.40 m apart. What is the length of the organ pipe
A 5.00-g bullet is fired into a 900-g block of wood suspended as a ballistic pendulum. What was the kinetic energy of the bullet
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 514 Hz and has a speed of 30.0 m/s. The motorcycle has a speed of 13 m/s. What frequency does the motorcyclist hear?
you have a 2.09-m-long stretched string with a mass of 19.1 g. when you oscillate the string at 440 hz which is the
It is currently popular for automobiles to use 10% ethanol / 90%gasoline mixtures (‘gasohol’) as fuel. According topopular consensus the main benefit of gasohol use is that it“reduces our dependence upon foreign oil.” Test thisassertion by making ..
An iceboat of mass 100 kg is at rest on a frictionless frozenlake when a sudden wind exerts a force Fwind ofmagnitude 200N, What is the velocity of the iceboat
A parachute dropped from a 30 meter-high cliff falls with a constant velocity of 1.5 meters per second. How long does it take for the stone to hit the ground
An object with a height of 42 cm is placed 2.3 m in front of a convex mirror with a focal length of -0.40 m. Find the location and magnification of the image
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