How does the electric generator in a wind turbine convert kinetic energy into electrical energy?
a.
the turbine spins a large battery within a wire coil.

b.
the turbine spins a large magnet within a wire coil.

c.
the turbine spins a large magnet within a battery.

d.
the turbine brushes electrons off of the spinning shaft.

An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the ambulance moves toward him? less than 450 hz more than 450 hz 450 hz 0 hz

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.