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A steel section of the Alaskan pipeline had a length of 63.8 mand a temperature of 21.8 °C when it was installed. What is itschange in length when the temperature drops to a frigid -46.6°C?
A disk of radius R and mass M = 10 g is rotating freely about a fixed axis through its center with angular velocity w = 11 rad/s. A spider of mass m = 0.5 g descends onto the disk and goes along for the ride. The moment of inertia of the disk is I..
After our Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state, Calculate the free-fall acceleration at its surface
Think about Galileo's inclined plane experiments. If a metal marble rolls 15 cm in the first unit of time, how farwill it roll in the third unit of time?
A hockey player hits a punk so that it comes to rest in 9s after sliding 30 m on the ice. Determine (a) the initial velocity of the punk, (b) the coefficient of friction between the punk and the ice.
A woman holds a tube of lipstick 5.7 cm from a spherical mirror and notices that the image of the tube is upright and one eighth its normal size. Determine the position of the image. Is it in front of or behind the mirror
a tow truck is pulling a car out of a ditch by means of a steel cable y 2.0 x 1011 nm2 that is 8.87 m long and has a
A 1.70-kg block slides with a speed of 0.985 m/s on a frictionless horizontal surface until it encounters a spring with a force constant of 695 N/m. Calculate the kinetic energy of the block
Listed below are the forces that were applied to the cart in these three runs. Use Newton's second law to estimate the mass of the cart in kg from this set of data
An automobile club plans to race a 780 kg car at the local racetrack. The car needs to be able to travel around several 170 m radius curves at 85 km/h. What must the banking angle of the curves be so that the force of the pavement on the tires of the..
In CHEM122 we do an experiment where the charge of an electron may be determined. How many hours does it take for this plating
The allowed energies of a simple atom are 0.0 eV, 4.0 eV, and 6.0 eV. What wavelengths appear in the atom's absorption spectrum
A hydraulic jack is made with a small piston 1.2 cm in diameter that is used to move a large piston 6.1 cm in diameter. how heavy a load can he lift with the jack
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