An object moving with a speed of 35 m/s and has a kinetic energy of 1500 j, what's the mass

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Gunpowder residue is most likely to show up where on a shooters hands

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?