During the night, a balcony of 10m² was attacked by 20 cm of snow. Density snow is 150 /³. a) What is the mass of snow on the balcony? b) What is the pressure with which the snow presses on the balcony?​

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: