You want to pull a 10 kg block up a frictionless ramp with an acceleration of 2.5 m/s2. what force do you need to apply along on the block along the direction of the ramp's surface if the ramp is angled at 30 degrees above the horizontal? a) 74 n b) 49 n c) 85 n 4) 110 n

Can you use radiation to generate electricity

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.