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a copper wire has a resistance of 29 at 19deg c an aluminum wire has three times the length and two times the radius
a common flashlight bulb is rated at 0108 a and 328 v the values of current and voltage under operating conditions if
a small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a
an astronaut weighs 925 kg on earth while floating in space he pushes the side of his spaceship with a force of 150 n
two toy cars resting on a frictionless table top are separated by a spring compressed by tying it with a thread if the
a what is the density of neon gas at standard temperature and pressure the atomic mass of neon is 2018 atomic mass
given a system composed of three bowling balls 652 kg each one sliding east at a velocity of 20msecond the second
how much work does a steam crane need to do in order to lift a 108500 kg locomotive back onto the track if the
a 1026 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a raduis of 264 mpart a at what
the air pressure inside the tube of a car tire is 431 kpa at a temperature of 145 degca what is the pressure of the air
a particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 ms in the x-direction along the line y
in a conservative system how do they relate to each other since the subject here is work how are work and energy
a motorist driving a 1200-kg car on level ground accelerates from 200 ms to 300 ms in a time of 57 s neglecting
you just calibrated a constant volume gas thermometer the pressure of the gas inside the thermometer is 342 kpa when
a rock is projected from the edge of the top of a building with an initial velocity of 122 ms at an angle of 53deg
a 200-kg package is dropped from a high tower in still air and is tracked by a radar system when the package is 25 m
a child pushes a merry-go-round with a force of 500 n at an angle tangent to the circle that is perpendicular to a
a body is displaced 15i - 20j m while being acted on by the force 20i - 30j n how much work is done on the body by the
three capacitors are connected as follows 374 f capacitor and 452 f are connected in series then that combination is
two closely spaced circular disks form a parallel-plate capacitor transferring 1396818927972 electrons from one disk to
two 200 cm diameter disks spaced 2239 mm apart from a parallel plate capacitor the electric field between the disks is
a 5 cm spring is suspended with a mass of 18557 g attached to it which extends the spring by 34967 cm the same spring
you have been given 1752 g of copper from which you are to fashion a wire whose resistance is 2519 ohms the density of
a frictionless plane is 100 m long and inclined at 340deg a sled starts at the bottom with an initial speed of 590 ms
you have an organ pipe that resonates at frequencies of 800 1120 and 1440 hz but nothing between these it may resonate