Two people are trying to pull a 5-kilogram block in opposite directions. The first person pulls to the right with a force of 25 Newtons, and the second person pulls to the left with a force of 15 Newtons. What is the acceleration of the block? Question 9 options:

8ms2to the right

2 ms2 to the right

2ms2to the left

10 N to the right

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.