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a soccer player kicks a ball from ground level with an initial velocity of 25 ms at an angle of 30deg above the
consider the mass spectrometer shown schematically in the figure below the electric field between the plates of the
to measure the static friction coefficient between a 478-kg block and a vertical wall the setup shown in the drawing is
a block with a mass of 100 g and a charge of 111 x 10-5 c is placed in an electric field with x component ex 251 x 103
a certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20c and its pressure is 1 atm
a 545 g ice cube initially at 0degc is dropped into a styrofoam cup containing 363 g of water initially at 212degc what
three identical resistors are connected in series when a certain potential difference is applied across the combination
a life preserver made of styrofoam is designed to support a person weighing 575 n with 80 of the body and 90 of the
a watertight car is submerged under water what force is required to open a door of area 125 m2 if the average depth of
for a long solenoid the magnetic field strength within the solenoid is given by the equation where t is time in seconds
a boxer receives a horizontal blow to the head that topples him over the force of magnitude 106 x 103 n is applied for
a toy car with a mass of 120 g moves to the right with a speed of 040 ms a small child drops a 380-g piece of clay onto
a capacitor is charged to a potential of 120 v and is then connected to a voltmeter having an internal resistance of
a 650fcapacitor that is initially uncharged is connected in series with a 4500resistor and a 505 v emf source with
a grandfather clock is controlled by a swinging brass pendulum that is 13 m long at a temperature of 30degca what is
you need to make a series ac circuit having a resonance angular frequency of 1600 rads using a 148 ohm resistor a 109
a 118-g ball is traveling to the left with a speed of 26 ms when it is struck by a racket the force on the ball
a proton is moving along the axis of a uniformly charged thing ring of 20nccm the radius of the ring is 5cm if the
an orchestra is tuning its instruments using a tone at a frequency of 440 hz a man comes zipping by on a very quiet
an ac series r-l-c circuit contains a 120 ohm resistor a 200 uf capacitor and a 500 mh inductora find the resonance
a string has a tension of 191 n a wave travels on the string with a frequency of 65 hz and a wavelength of 090 meters
a wave on a string has an amplitude of 032 m a frequency of 120 hz and a wavelength of 14 metersa what is the speed of
three resistors having resistances of r1 153 r2 237 and r3 473respectively are connected in parallel to a 283 v
freight car with mass of 25000 kg rolls down an inclined track through a vertical distance of 15 m at the bottom of the