Jenavius placed a marshmallow in the microwave to make a smore for desert. The marshmallow expanded when it was heated. How can
1 answer:
Answer: A) As the marshmallow was heated the particles moved faster increasing its volume.
Explanation: When heat is supplied to the marshmallows, the kinetic energy of the marshmallows increase and thus they start moving randomly and thus the molecules occupy more volume and volume increases.
As we know kinetic energy is directly related to temperature, thus as temperature is increased, the kinetic energy of the molecules also increase.
R = gas constant
T= temperature
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Answer:
The angle between the electric field lines and the equipotential surface is 90 degree.
Explanation:
The equipotential surfaces are the surface on which the electric potential is same. The work done in moving a charge from one point to another on an equipotential surface is always zero.
The electric field lines are always perpendicular to the equipotential surface.
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For equipotential surface, dV = 0 so
The dot product of two non zero vectors is zero, if they are perpendicular to each other.