Homework Statement
How might you convert the generator in (http://www.aerospaceweb.org/question/propulsion/jet/generator.jpg) so that instead of producing alternating emf and current it will produce direct current? Would it be a steady D.C? Sketch a graph to show how the emf would vary with...
Homework Statement
What impulse is needed to change the velocity of a 90.0 kg football player from 3.6 m/s towards the north and make it 1.2 m/s toward the northeast? In what direction must the force be exerted?
Homework Equations
p=mv
The Attempt at a Solution
I drew vectors of...
Homework Statement
A 10kg block sits on a steel tabletop. A 3kg block sits on the first block. A string connects the top block to the table.
a) If the string makes an angle of 10 degrees with the horizontal, how much force is required to move the middle block?
b) At what angle will the...