Which statement about the physical properties of matter is true? (15)

a. physical properties of matter stay the same throughout all phases of matter.
b. physical properties of matter only apply to the appearance of matter.
c. physical properties change without changing the chemical properties of
matter.
d. physical properties of matter affect the chemical properties of matter.

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.

Are good conductors of heat also good conductors of electricity? explain your answer.