Beichner. "Exploring Magnetic Fields with the Compass" . Phys. Teach. 49 - 45-48 (Jan. 2011). R. Feynman, B. Robert, Leighton and M. Sands . "The Feynman Lectures on Physics", Vol. I.LUNK, Brandon; BEICHNER, Robert. Exploring Magnetic Field with a Compass. The Physics Teacher, ...
In a magnetic field, a compass needle always points in the direction of ___. A. the north pole of the magnet B. the south pole of the magnet C. east D. west 相关知识点: 试题来源: 解析 A。指南针在磁场中总是指向磁体的北极。选项 B 是磁体的南极,指南针指向的是北极;选项 C 和 D ...
The meaning of MAGNETIC COMPASS is a device that is used to find direction by means of a needle that always points north.
compass 1. Withastrongmagnetclose by,anythinglikeamagneticcompasscan no longertellabouttheearth'sweakmagneticfield. 如果把一块磁力很强的磁铁放在近旁,任何像磁性罗盘之类的东西都无法分辨出正确方向。 dictsearch.appspot.com 2. Acellin theeyemay beworthtwo in thebeak,atleastwhenitcomesto amigratorybird...
Compass C. Altimeter D. Thermometer Correct Answer B. Compass Explanation A compass uses the Earth's magnetic field. A compass is a navigational instrument that uses a magnetized needle to align with the Earth's magnetic field, pointing towards the magnetic poles. This alignment helps in determin...
and created a magnetic field. by adjusting the power, keller could create a stronger or weaker field, mimicking specific conditions the sharks might encounter in the ocean. if the sharks oriented themselves in a certain way based on the strength and angle of the magnetic field, that would be...
This work is based on the variational principle for magnetic field lines introduced in 1983 by Cary and Littlejohn. The action principles for magnetic field lines and for Hamiltonian mechanics are recalled to be analogous. It is shown that the first one can be rigorously proved from first princi...
A compass points north because the small magnetic needle in it is suspended so that it can spin freely inside its casing to align itself with Earth's magnetic field. Paradoxically, what we call the Magnetic North Pole is actually a south magnetic pole because it attracts the north magnetic ...
COMPASS: A STUDENT EXPERIMENT FOR MAGNETIC FIELD MEASUREMENT ON STRATOSPHERIC This paper describes the COMPASS experiment, designed and realized by a team of four students of the Space Robotics Laboratory of the II Faculty of Enginee... S Donati,R Ravaglia,T Cardona,... 被引量: 0发表: 2010...
Once completed, compass needles that had pointed north would point south. A reversal could cause problems for both that rely on the magnetic field for navigation would find migration confusing. But experts links between past field reversals and species extinctions....