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Compute what is the diameter (to the nearest tenth of an mm) of a tungsten wire that has the same resistance as a copper wire of the same length? The diameter of the copper wire is 5.4 millimeter.
A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 351 m/s. What is the sprinter's speed
A rock climber throws a small first aid kit to another climber who is higher up the mountain. Find the vertical height between the two climbers
An L-R-C series circuit, R= 160 Ω, L= 0.700 H, and C= 1.90×10-2 μF. The source has a voltage amplitude of 160 V and a frequency equal to the resonance frequency of the circuit. what is the average power delivered by the source
A proton (with a rest mass m=1.67×10?27kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton
A periscope for a submarine uses two totally reflection 45°-45°-90° prisms with total internal reflection on the side adjacent to the 45° angles. It springs a leak, and the bottom prism is covered with water. Explain why the periscope no long works. ..
A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to th..
In Fig. 22-30 the electric field lines on the left have twice theseparation as those on the right. (a) Ifthe magnitude of the field at A is 58 N/C, what is the magnitude ofthe force on a proton at A?
A grating spectrometer is used to resolve second order peaks from two wavelengths of ?1 = 495.00 nm and ?2 = 495.71 nm. What is the minimum number of slits this grating must have
in order to drink from your glass you need to lift it to your mouth. if your glass in now 0.18kg and accelerates to
A particle moves along the x-axis. Its position is given by the equation x= 7 + 3t2 - 8t3 with x in meters and t in seconds. Find its position when it changes direction
Two vectors, A and B are added by means of vector addition to give a resultant vector R:R=A+B. What are the maximum and minimum possible values for the magnitude of R
Two spaceships approach Mars from the same direction. One has a speed of 0.2c, What is the speed of one spaceship relative to the other
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