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a speeder tries to explain to the police that the yellowwarning lights on the side of the road looked green to her
the drawing shows two boxes resting on frictionless ramps one boxis relatively light and sits on a steep ramp the other
a particle starting from point a in the drawingthe height at a is 300 m is projected down the curved runwayupon leaving
an ac adapter for a telephone-answering unit uses atransformer to reduce the line voltage of 120 v rms to a voltageof
in a physics lab experiment a spring clamped to the table shoots a22 rm g ball horizontally when the spring is
a step-down transformer produced a voltage of 90 v across the secondary coil when the voltage on the primary coil is
a transformer is used to power a cell phone charging unit if thetransformer has a primarysecondary turns ration of 401
100 mw of electrical power is delivered at 200 kv to adistribution center over a transmission line which consumers 10
an electric kettle of 70 ohm resistance containing 500cm3 of water at 10 degrees celsius is connected to the110 v
a transmission line is made of a core of copper surrounded by a concentric circular sheath of steel to give it
1 how does the resistance of a wire depend upon the wire diameter2 how does the resistance of a wire depend upon the
use the data of table 73 to find the point between mars and the sun at which an object can be placedso that the net
a concave makeup mirror is designed so that aperson 23 cm in front of it seesan upright image magnified by a factor of
a 19g ball of clay is shot to the right in the positive -direction at 21ms toward a 38g ball of clay at rest the two
a glass is half-full of water with a layer of oiln 151 floating on top a ray of light traveling downward through the
a laser is mounted in air m above the edge of a large horizontalpane of crown glass n 1520 as shown in the drawing the
a device for measuring the moment of inertia of an object is shownin the figure below the circular platform is attached
an electrically charged bullet of mass 0010 kg leaves thebarrel of a gun traveling parallel to the ground and
a mass spectrometer has an adjustable magnetic field when the magnetic field is 7000e-2 t a singly ionized hydrogen
a uniform board is leaning against a smooth vertical wall theboard is at an angle above the horizontal ground the
a hoop and a disk both of 066- m radius and 40- kg massare released from the top of an inclined plane 31 m high and 89
a 285 kg bucket is attached to a disk-shaped pulley of radius 0121 m and mass 0742 kg if the bucket is allowed to fall
a charged belt 50 cm wide travels at 30 ms between a sourceof charge and a sphere the belt carries charge into the
a rubber ball with a radius of 32 cm rolls along the horizontal surface of a table with constant linear speed v when
despite what you see in science fiction movies we dont know howto make artificial gravity however we can make something