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One rod is made from lead and another from quartz. The rods are heated and experience the same change in temperature. The change in length of each rod is the same. If the initial length of the lead rod is 0.16 m, calculate the initial length of the quartz rod?
Consider the Sun to be at the origin of an xy-coordinate system. What will the asteroid's velocity be at closest approach
Determine the x and y components of the following three vectors in the xy plane. A 15-m displacement vector that makes an angle of 23° clockwisefrom the +y direction.
The drill bit of a variable-speed electric drill has a constant angular acceleration of 5.21 rad/s2. The initial angular speed of the bit is 5.12 rad/s. what is the bit's angular speed
An oak barrel with a lid of area 0.20 m2 is filled with water. A long, thin tube of cross-sectional area 5.0 X 10-5 m2 is inserted into a hole at the center of the lid, What was the net force on the lid due to the water pressure
An engine absorbs 1695 J from a hotreservoir and expels 1204 J to a coldreservoir in each cycle. What is the power output of the engine if each cycle lasts for0.302 s
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 16.4 rad/s. What is the angular speed of the wheel
An iron tower in is 304 meters tall on a cold day (T = -9 degrees Celsius). What is its height of the tower on a hot day when the temperature is 34.6degrees Celsius
As an electron moves through a region of space , its speed decreases from 8*10^6 m/s to 3*10^6 m/s. Through what potential difference did the electron move
a naive model of a solid is a bunch of masses the atoms connected by springs. what is the order of magnitude of the
A researcher is trying to shoot a tranquilizer dart at a 1.8-m-tall rhino that is 150m away. What is the magnification of the telescope
A biology student rides her bike around a corner of radius 25 meter at a steady speed of 8.2 m/sec. If she is not skidding, what is the magnitude of the force of friction on her bike from the road
A 58 ice cube can slide without friction up and down a 28 slope. The ice cube is pressed against a spring at the bottom of the slope, When the ice cube is released
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