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When a high-speed passenger train traveling atvP = 55 m/s rounds a bend, the engineer is shocked to see that a locomotive has improperly enteredonto the track from a siding and is a distance D =1000 m ahead (see figure). The locomotive is moving atvL = 9 m/s. The engineer of the passenger train immediately applies the brakes. Assume that anx axis extends in the direction of motion. What must be the constant acceleration along that axis if a collision is to bejust avoided?
A charge of -1.0 µC is located at the origin, a second charge of 2.6 µC is located at x = 0, y = 0.1 m, Find the forces that act on each of the three charges
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
An atomic clock moves at 1400 km/h for 1.15 h as measured by an observer using an identical clock on Earth. How many nanoseconds slow will the moving clock be at the end of the 1.15-h interval? Hint: The following approximation is helpful: 1 ? x ? (1..
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg, What is the radius of the ion's path in the magnetic field
A parallel-plate capacitor is charged to an electric potential of 285 V by moving 3.20×10^16 electrons from one plate to the other
A garden has a circular path of radius 50{\rm m} . John starts at the easternmost point on this path, What is the magnitude of John's displacement
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 18.0cm , giving it a charge of -12.0?C. Find the electric field just inside the paint layer
A long solenoid that has 1,050 turns uniformly distributed over a length of 0.450 m produces a magnetic field of magnitude 1.00 10-4 T at its center
The intensity level of 34.07 harmonicas in a harmonica band is 78.31 dB. Compute the intensity level generated by one harmonica
A hoop and a disk, both of 0.68- m radius and 4.0- kg mass, are released from the top of an inclined plane 2.6 m high and 7.7 m long. What is the speed of the disk
A capacitor with an initial potential difference of 144 V is discharged through a resistor when a switch between them is closed at t = 0 s. At t = 10.0 s, What is the time constant of the circuit
A car is accelerating while its horn is blowing. Just after the car passes a stationary person, the person hears a frequency of 978 Hz. 16.0 seconds later, the frequency heard by the person has decreased to 915 Hz.
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