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A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m . Your friend David flies past you to the right at a speed relative to you of 0.80c.
How long does David measure the train car to be?
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.400 mm2. What is the current in the wire
Three identical train cars, coupled together, are rolling east at 1.6 m/s . A fourth car traveling east at 4.4 m/s catches up with the three and couples to make a four-car train. What is the speed of the five-car train
calculate the mass and density of methane gas contained at 1000 psia and 68 degrees Farenheit in a cylinder with volume 3.20 cu ft
A motorist travelling at 17m/s encounters a deer in the road 49m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7 m/s2. If his or her reaction time is 1.9987 s, how fast will (s) he be travelling when (s) he reaches dee..
A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery. What is the dielectric constant of this material
If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol, Determine the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 19.5 A current
A physics book slides off a horizontal table top with a speed of 1.00m/s. It strikes the floor after a time of 0.390ss, Find the height of the table top above the floor
Waterslides are nearly frictionless, hence can provide bored students with high-speed thrills. If Kevin is clocked at 25 m/s at the bottom of the slide, find the work done on him by friction
A very long, straight solenoid with a cross-sectional area of 6.00 is wound with 40.0 turns of wire per centimeter, and the windings carry a current of 0.250. What is the average induced emf in the secondary coil
Running into the train at that speed would severely damage both train and passengers. How far does the train then travel while being slowed to a stop
A laser light has a wavelength of 670 nanometers and the separation between the two first order diffraction minima is 11 cm. Calculate the slit width and slit separation
question1the follow statement is true or false?the electric field epoint at the center of an induced dipole because of
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