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the resistivity of the commercial copper is 172 x 10-8 m the diameter of a copper wire in the coil of a solenoid is 025
two resistors of 20 ohms and 25 ohms are connected in parallel a third resistor of 12 is connected in series with them
two point charges q1 30 x 10-8 c and q2 20 x 10-8 c are located on the x axis at x1 02 m and x2 -03 m find the
what is the natural frequency of a lc circuit with l 20 mh and c 800 f the capacitor is initially charged to 120
a piece of conductor is moving in a uniform magnetic field b 02 t with a velocity of 05 ms perpendicular to the
a 46mh toroidal inductor has 150 identical equally spaced coils if it carries an 120a currenta how much magnetic flux
a battery of internal resistance r 02 ohms and emf 120 v is connected to a device with resistance r 60 ohmswhat is
a farsighted person can read printing as close as 250 cm when she wears contacts that have a focal length of 374 cm one
two narrow slits are illuminated by a laser with a wavelength of 581nm the interference pattern on a screen located x
a 18 cm tall object is placed in front of a concave mirror with a radius of 26 cm the distance of the object to the
a a microwave radio transmitter emits electromagnetic waves of a single wavelength the maximum electric field 551 km
a projectile is launched at 450 degrees with the horizontal its initial speed is 250 msa what is its speed and
a pair of slits separated by 13 mm are illuminated with monochromatic light of wavelength 573 nm the light falls on a
a car moving at 200 ms decelerates at 700 ms2 how far will it travel before stoppingat the same deceleration rate if
the kinetic energy of a 50 kg bowling ball just before it hits the ground is 4550 j if the ball was originally thrown
a hedgehog pushes a rock of 19 kg up a ramp which is tilted at 195 degrees to horizontal at a constant speed of 025 ms
you push a box up a ramp inclined at 262o using a force of 2300n for a distance of 109 m how much work do you do in the
a 135 kg raccoon falls out of a tree and hits the ground with a kinetic energy of 12370 j what was the raccoons
when laser light of wavelength 6328nm passes through a diffraction grating the first bright spots occur at - 178
a point charge of 840 mc is surrounded by an equipotential surface with a radius of 0280 m what is the electric
a 670mw helium neon laser emits a visible laser beam with a wavelength of 636nm how many photons are emitted per
a 0150 t magnetic field b crosses the xy plane perpendicular to the x axis and at an angle of 700deg to the y axis a
two hockey players of equal mass are sliding across the ice rink in a straight line directly toward each other player 1
a generator is made from a set of 7000 loops of area 500 cm2 rotating at an angular frequency of 600 radians per second
the smallness of the critical angle c for diamond means that light is easily trapped within a diamond and eventually