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a small bar magnet experiences a 21 x 10-2nm torque when the axs of the magnet is at 45 degree to a 600 10-2 t magnetic
a conducting bar of length script l moves to the right on two frictionless rails as shown in the figure below a uniform
consider the circuit in the figure below take emf 600 v l 700 mh and r 600 oa what is the inductive time constant of
to a fish the 420 mm thick aquarium walls appear to be only 380 mm thick what is the index of refraction of the
a tiny piece of metal contains 100 magnetic spins at room temperature there is an equal likelihood for an individual
a wire 20mm in diameter and 4cmlong is connected to a 12v battery if the resistivity of the wire is 35 x 10-5 ohm-m
two narrow slits 0328 mm apart are illuminated by light of wavelength 600 nm the light falls on a screen 158 m away
an electron moving with a velocity of 27 x106 ms in the positive x direction enters a region where there is a uniform
a hemispherical observation dome is proposed for a new tourist oceanarium and the owners want it as large as possible
a parallel plate capacitor has 25cm2 plates that are separated by 2mm in a vacuum if a potential difference of 100v is
a uniform electric field exists between two parallel plates separated by 2cm if an electron of mass 91 e-31 kg is
estimate the spring constant for a trampoline assume a person is standing on the trampoline and oscillating up and down
a window in a house is rectangular with height 40 cm and width 30 cm the pressure inside the house is normal
in the drawing the head-up display is designed so that the distance between the digital readout device and virtual
in an experiment designed to measure the speed of light a laser is aimed at a mirror that is 530 km due north a
a large tree trunk is floating in the sea the density of the sea water is 1040 kgm3 the density of the trunk is 720
a meterstick lies along the optical axis of a convex mirror of focal length -48 cm with its nearest end 63 cm from the
a person weighs 784 n in air and has a body-fat percentage of 230 what is the overall density of this persons bodywhat
an electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of
a meterstick is moving by an observer in a direction parallel to its length the speed of the meterstick is 49c what is
a capacitor has a capacitance of 250 nf and a voltage is placed across it which grows as a function of time as vt 240
consider the electrons of a speed 99999999967c of produced by the stanford linear accelerator what is the magnitude of
a 570 g 650-cm-diameter solid cylinder rolls across the floor at 100 mswhat is the cans kinetic
an electric heater plugged into a 115-v ac outlet uses an average electric power of 1200 w what are the maximum
two identical spaceships are traveling in the same direction an observer on earth measures the first to have a speed