1.A conductor in a train travelling at 4.0 m/s (N) walks across the train at 1.2 m/s(E) to validate a ticket. If the trian car is 4.0m wide, how long does it take theconductor to reach the other side?vog=?vom 1.2 m/s(E)(1.2/4.2)vmg= 4.0 m/s(N)vog 4.2m/s(N17E)AdAt =ΔυAt = 3.3svom=5m/s(W)vmg=11m/s(S= 12m/s=vog vom+vmg-5m/s (W)+ 11m/s(S)= sqrt (5m/s)^2+ (1m/s)^2sin 9012m/s4.0m/s1.2m/s2. A jetski speeds across a river at 11 m/s relative to the water. The jet ski'sheading is South. The river is flowing West at 5m/s. Determine the jet ski'svelocity relative to the shore.vog=?=vog vom+vmgsin 05m/s= 1.2m/s(E) + 4.0m/s(N)=sqrt (1.2m/s)^2 + (4.0m/s)^2=4.2 m/s= 24°Therefore the answer is 12m/s (S24W)Tan-1== 17

1.A conductor in a train travelling at 4.0 m/s (N) walks across the train at 1.2 m/s (E) to validate a ticket. If the trian car is 4.0m wide, how long does it take the conductor to reach the other side?

1.A conductor in a train travelling at 4.0 m/s (N) walks across the train at 1.2 m/s (E) to validate a ticket. If the trian car is 4.0m wide, how long does it take the conductor to reach the other side?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

1.A conductor in a train travelling at 4.0 m/s (N) walks across the train at 1.2 m/s
(E) to validate a ticket. If the trian car is 4.0m wide, how long does it take the
conductor to reach the other side?
vog=?
vom 1.2 m/s(E)
(1.2/4.2)
vmg= 4.0 m/s(N)
vog 4.2m/s(N17E)
Ad
At =
Δυ
At = 3.3s
vom=5m/s(W)
vmg=11m/s(S
= 12m/s
=
vog vom+vmg
-5m/s (W)+ 11m/s(S)
= sqrt (5m/s)^2+ (1m/s)^2
sin 90
12m/s
4.0m/s
1.2m/s
2. A jetski speeds across a river at 11 m/s relative to the water. The jet ski's
heading is South. The river is flowing West at 5m/s. Determine the jet ski's
velocity relative to the shore.
vog=?
=
vog vom+vmg
sin 0
5m/s
= 1.2m/s(E) + 4.0m/s(N)
=sqrt (1.2m/s)^2 + (4.0m/s)^2
=4.2 m/s
= 24°
Therefore the answer is 12m/s (S24W)
Tan-1=
= 17

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