Asmall button placed on a horizontal rotating platform with diameter 0.520 m will revolve with the platform when it is brought up to a speed of 40.0 rev/min, provided the button is no more than 0.220 m from the axis. (a) what is the coefficient of static friction between the button and the platform? (b) how far from the axis can the button be placed, without slipping, if the platform rotates at 60.0 rev/min?
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Physics, 21.06.2019 22:50
An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?
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What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?
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(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
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Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?
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Asmall button placed on a horizontal rotating platform with diameter 0.520 m will revolve with the p...
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