<ol><li>A motorcycle wheel turns 100<em>π </em> rad during 35.0 s. What is the angular

velocity of the wheel?</li><li> A model helicopter pulls into a tight circular curve of radius 40.0 m. The 400 g helicopter is traveling at 90.0 km/h. What is the centripetal force that is acting on the helicopter?</li><li> Find the mechanical advantage of a ramp 18.0 m long and 6.00 m high. Find the force required to pull a box of mass 985 kg up the ramp. Disregard friction.</li><li> Convert 34.0 °C to Kelvin.</li><li>The focal length of a lens is 5.00 cm. How far from the lens must an object be placed to produce an image 7.15 cm from the lens?</li><li> If a light source is moved twice as far from its projection screen, what will happen to the illumination E on the screen?</li></ol>

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