The plug-in transformer for a laptop computer puts out 7.50 v and can supply a maximum current of 1.6 a. what is the maximum input current ip in amps, if the input voltage is 240 v? assume 100% efficiency

Which of the following are guidelines to follow for obtaining accurate observations

You can decrease the resistance of a length of wire by

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?