The Exhaust Product from a Hydrogen Fuel Cell Is

Q72: Phil applies 100 N to a pulley

Q73: One kilowatt-hour represents<br>A)1 N.<br>B)60 N/s.<br>C)60,000 W.<br>D)3.6 million

Q74: Relative to an initial height, an object

Q75: A bicycle that travels four as fast

Q76: Two identical arrows, one with twice the

Q78: A common pulley acts similar to a<br>A)hydraulic

Q79: A moving object has<br>A)speed.<br>B)velocity.<br>C)momentum.<br>D)energy.<br>E)all of these

Q80: A ball rolling down an incline has

Q81: A feather and a coin dropped in

Q82: A motorcycle moving at 50 km/h skids