When she carried out her experiment, Tanya used three small vials of the
same size and two slightly larger ones. She decided that the sizes were close
enough to compare the surface tension of the liquids. ls she correct? Why or
why not?
OA. No, because the shape will not be the same when the surface area
is different.
O B. Yes, because the shape will be the same when the surface area is
different.
O c. No, because when there are more molecules, the forces between
them are weaker, changing the shape.
OD. Yes, because when there are fewer molecules, the forces between
them are stronger, maintaining the same shape.
Answers: 3
Physics, 22.06.2019 10:20
Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?
Answers: 1
Physics, 22.06.2019 11:30
Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?
Answers: 3
Physics, 22.06.2019 14:10
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
When she carried out her experiment, Tanya used three small vials of the
same size and two slightly...
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