Physics, 19.10.2020 23:01 dajmoneyp80a0o
The diagram shows the movement of air as a result of convection currents.
An illustration of a house with arrows in the clockwise direction. In the bottom left is a space heater. The arrows rising off the heater are labeled Y the arrows curving towards the ceiling are labeled W, the arrows going across the ceiling are labeled W and the arrows going down the wall on the opposite side of the room are labeled X.
At which point is the air at its highest density?
W
X
Y
Z
Answers: 2
Physics, 21.06.2019 22:30
A-4.60 μc charge is moving at a constant speed of 6.80×105 m/s in the +x−direction relative to a reference frame. at the instant when the point charge is at the origin, what is the magnetic-field vector it produces at the following points.
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Physics, 22.06.2019 11:00
If a simple machine reduces the strength of a force, what must be increased?
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Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
Physics, 22.06.2019 16:30
Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.
Answers: 1
The diagram shows the movement of air as a result of convection currents.
An illustration of a hous...
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