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when an ac source is connected across a 115- resistor the rms current in the resistor is 820 aa find the rms voltage
a 387 kg mass experiences a gravitational force of 147 n at a certain point in space what is the magnitude of the
a truck is carrying a steel beam of length160m on a freeway an accident causes the beam to be dumped off the truck and
a 0058 kg arrow is fired horizontally the bowstring exerts an average force of 65 n on the arrow over a distance of 090
a person pushes a 160 kg shopping cart at a constant velocity for a distance of 180 m she pushes in a direction 230deg
at a shooting competition a contestant fires and a 130 bullet leaves the rifle with a muzzle speed of 130 the bullet
a 1300 kg car moving on a horizontal surface has speed v 80 kmh when it strikes a horizontal coiled spring and is
an object with a mass of m 55 kg is attached to the free end of a light string wrapped around a reel of radius r 0275
a swift blow with the hand can break a pine board as the hand hits the board the kinetic energy of the hand is
a block of mass m1 175 kg and a block of mass m2 575 kg are connected by a massless string over a pulley in the shape
a closely wound circular coil with a diameter of 400cm has 600 turns and carries a current of 0500 a what is the
a solenoid 900 cm long has a radius of 290 cm and a winding of 1000 turns it carries a current of 360 a calculate the
a 750- car stopped at an intersection is rear-ended by a 1730- truck moving with a speed of 160 if the car was in
the wave function for a wave on a taut string is yx t 0360 sin8t 3x 4 where x and y are in meters and t is in
a grinding wheel is in the form of a uniform solid disk of radius 690 cm and mass 190 kg it starts from rest and
a current of 100 amperes is maintained in a simple circuit with a total resistance of 300 ohms how much heat is
a spherical planet has twice the mass and twice the radius of the earth if a man weighs 810 n on earth what would his
a 30uf capacitor initially charged to 30uc is discharged through a 29kohms resistor how long does it take to reduce the
a new event has been proposed for the winter olympics an athlete will sprint 100 m starting from rest then leap onto a
a real battery is not just an emf we can model a real 15v battery as a 15v emf in series with a resistor known as the
a power plant that uses the temperature gradient of the ocean has been proposed the system is to operate between 208oc
the filament of a light bulb has a temperature of 320e3 degc and radiates 40 watts of power the emissivity of the
which one of the following lists is a correct representation of electromagnetic waves from longer wavelength to shorter
due to a tune-up the efficiency of an automobile engine increases by 350 for an input heat of 1260 j how much more
how far from the center of the earth must you go so that your weight is half of that at the surface of the