A proton is moving at an angle of 80° to a uniform magnetic field. What is the relationship between the direction of the force on the proton and the direction of the magnetic field?
A)
parallel to the magnetic field
B)
at an angle of 10° to the magnetic field
C)
at an angle of 80° to the magnetic field
D)
at an angle of 180° to the magnetic field
E)
perpendicular to the magnetic field
E
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A dump truck has a large cubical concrete block in its bed. The coefficients of friction between this block and the floor of the bed are µk = 0.450 and µs = 0.650
As the bed is slowly tilted above the horizontal, will the brick first begin to slide or will it first tip over? A) It will first tip over. B) It will first begin to slide. C) It will tip over just as it begins to slide. D) It is impossible to answer without knowing the mass of the block. E) It is impossible to answer without knowing the dimensions of the block.
When an atom is in a magnetic field, the electron energy levels remain unaltered because the atom is limited to a single wavelength
Indicate whether the statement is true or false
When an igneous rock is eroded and then becomes deposited at the bottom of an ocean it turns into
A) a metamorphic rock B) a meteorite C) another igneous rock D) a sedimentary rock
Define chunked text and explain the importance of writing scannable text for webpages.
What will be an ideal response?