William Gilbert used a terella in an attempt to explain .
why like poles of a magnet repel
wh...
Physics, 15.01.2021 18:40 Scotdouglas346
William Gilbert used a terella in an attempt to explain .
why like poles of a magnet repel
why unlike poles of a magnet attract
why compasses point toward the north and south poles of the earth
the properties of lodestone
Answers: 3
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What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k
Answers: 1
Physics, 21.06.2019 17:10, Bamaboy8804
Space-time metric ds2= -dt2+at2dx2+bt2dy2+ct2dz2 (a)how does the area of a rectangle with vertices at ( x=0, y=0, z=0 ), (1,0,0 ), ( 0,1,0 ) and (1,1,0 ) changes with time? (b) if a photon moving in the x direction starts from the origin at t=1, when does it reach x=l? (ds=0 for the trajectory of a photon.) (c) the proper time for a particle is defined by cd=ds. what is the proper time for a particle to move along the trajectory ( x(t)=t, y(t)=0, z(t)=0 ) from t=0 to 1 ? what is the condition on the parameter a so that the velocity of the particle never exceeds the speed of light ?
Answers: 2
Physics, 22.06.2019 11:30, lifeofabe214
Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?
Answers: 1
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