Physics, 08.04.2020 15:45, ur4286

Why does a forming star go from cold to hot as it forms?

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Physics, 22.06.2019 11:30, smilequi9653

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

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Physics, 22.06.2019 11:50, morenodonaldo762

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

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Physics, 22.06.2019 16:40, odalysesquermon

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

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Physics, 22.06.2019 23:40, redraider4915

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)