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aluminum wire has been used to replace copper wire during times of high copper prices if 20 gauge copper wire has a
a square coil length of side 24 cm of wire is placed in a uniform magnetic field that makes an angle of 30 degree
a uniform beam of length l and of weight 90000 n is attached to a vertical wall by a hinge the beam is held in a
an electric grinding wheel of radius 050 m is initially at rest when the motor is turned on at time t10s it then
an ideal gas is confined to a cylinder by a piston the piston is slowly pushed so that the gas temperature remains at
two conductors having net charges of 14 microc and 14 microc have a potential dierence of 111 v determine the
light from the bottom of a swimming pool is incident on the surface at an angle of 20deg what is the angle of
a 70kg parachutist whose density is 1050 kgm3 is in free fall find the buoyant force due to the air and compare with
you are standing on a sheet of ice that covers the football stadium parking lot in buffalo there is negligible friction
a bullet moving at 200 ms strikes a wooden block which has several hundred times the bullets mass the block is hanging
a what is the angle between a wire carrying 830 a and the 120 t field it is in if 500 cm of the wire experiences a
a wire carrying a 320 a current passes between the poles of a strong magnet perpendicular to its field and experiences
a ray of one color for which n151 and a ray of another color for which n16 travel through a piece of glass they meet
the mass of a regulation tennis ball is 520g although it can vary slightly and tests have shown that the ball is in
a hungry 125rm kg predator fish is coasting from west to east at 800rm cmrm s when it suddenly swallows a 120rm kg fish
an object made of a single atomic element weighs 24500 n in air and 21387 n when completely submerged in water
a transverse harmonic wave travels on a rope according to the following expression yxt 017sin20x 175t the mass
light strikes a cube with index of refraction 2 at an angle of 30 deg at what angle will the light exit the
an electron and a positron have masses of 911 10-31 kg they collide and both vanish with only electromagnetic radiation
which of the following actions is expected to increase the elastic modulus of a semicrystalline polymer select as many
a 560kg block hangs from a spring with spring constant 2120nm the block is pulled down 520cm from the equilibrium
an electron that has velocity 31 106 ms 23 106 ms moves through a magnetic field 003 t - 015 t a find the force on
an object with a mass of 0527kg is attached to a long horizontal spring with a constant of 526kgs2 for a moment when t
a 0385kg block is attached to a horizontal spring and that oscillates in simple harmonic motion with a period of 0303s
a 180-kg rock is released from rest at a height of 180 m ignore air resistance and determineathe kinetic energy at 180