A dude picks up his 3kg skateboard and walks 20m. How much horizontal work happens?

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

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.