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Nuetrik [128]
3 years ago
8

Which best describes why a liquid needs container when a solid does not

Physics
2 answers:
Triss [41]3 years ago
6 0
Because liquid is a type of watery cusidency and solid is a type of holding together cusidency
Ne4ueva [31]3 years ago
4 0

Explanation:

The difference between solids and liquids lies in the bond strength between their molecules. In solids, this force is large enough to hold them in the same position, in liquids it is too weak to leave them fixed, however, it is large enough to hold them together. This allows matter in liquid state to take the form of the container that contains it.

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Suppose that the voltage across the resistor is held constant at 40 volts. If the resistance is steadily decreasing at a rate of
hjlf

Answer:

The current is increasing at a rate of 0.32 ampere per second.

Explanation:

The voltage of the resistor is modelled after Ohm's Law, which states that voltage is directly proportional to current:

V = i\cdot R (1)

Where:

V - Voltage, measured in volts.

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\frac{dV}{dt} = \frac{di}{dt}\cdot R + \frac{V}{R}\cdot \frac{dR}{dt} (2)

Where:

\frac{dV}{dt} - Rate of change in voltage, measured in volts per second.

\frac{di}{dt} - Rate of change in current, measured in amperes per second.

\frac{dR}{dt} - Rate of change in resistance, measured in ohms per second.

If we know that \frac{dV}{dt} = 0\,\frac{V}{s}, R = 5\,\Omega, V = 40\,\Omega and \frac{dR}{dt} = -0.2\,\frac{\Omega}{s}, then the rate of change in current is:

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\frac{di}{dt} = 0.32\,\frac{A}{s}

The current is increasing at a rate of 0.32 ampere per second.

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