A 50 kg skier skis straight down a slope with an angle of 15.0° relative to the horizontal. The coefficient of kinetic friction between his skis and the snow is 0.100. a.) Calculate the x-and y-component of the force of gravity acting on the skier.

b.) Calculate the normal force acting on the skier.

c.) Calculate the force of friction acting on the skier.

d.) Use Newton’s 2nd Law to calculate the acceleration of the skier.

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.