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A express train travels along a straight line between two stations, A and D. Stations B and C are spaced evenly along the line between A and D. The engineer leaves A and accelerates at a constant rate until he passes station B, at which time he coasts with constant velocity. When he reaches station C, he slows down at the same rate he used for the first segment of the trip, thereby coming gently to rest at station D. Given that the total trip requires 5 mins, how much time is spent going from a) A to B? b) B to C? c) C to D?
The electric field 25cm from a long wire carrying a uniform line charge density is 1.8kN/C. What will be the field strength 37cm from the wire
a ball mass of 5 grams and radius of 1.5 cm is rolled up a frictionless ramp that is 30 degrees above horizontal with an iniitial velocity of 4 m/s
A laser beam in air is incident on a liquid at an angle of 38.0 with respect to the normal. What is the critical angle for total internal reflection for this fluid
What is the intensity of the sound waves at point.
An inexpensive microscope has a tube length of 12.0cm and its objective lens is labeled with a magnification of 10x, Calculate the focal length of the objective lens
If a person exerts 44 N of force on the back of a seat while stopping in 0.4 seconds, what is the impulse on the seat back
The magnitude of vector A is 24 m, and it points in the positive y direction. What are the magnitude and direction of vector
a car of 1200 kg travels east (call it +x) at 24 m/s while a truck of 2200kg travels north (call it +y) at 19 m/s . they collide and stick together. What is the momentum in the sysem
the half-life of a muon at rest is 1.52 us. One can store muons for a much longer time by accelerating them to a speed very close to that of light, How fast will the muons have to be moving
A simple pendulum uses a steel wire as the "string." The length of this wire is 1.5 m at room temperature. What is the change in the period of the pendulum
A circuit containing a 8 H inductor has an alternating current supplied to it. If Irms is 5.6 A and Vp is 25 V, find the frequency of the signal
As you drive by an AM radio station, you notice a sign saying that its antenna is 49 m high. what is the frequency of the station
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