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An aluminium baseball bat has a length of 0.75 m at a temperature of 17°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Decide the final temperature of the bat.
two wheels of mass m and moment of inertia i are connected by a massless axle of length l. the system rests on a
A beam of light passes through a polarizer and then an analyzer. find the angle between the axes of the polarizer and the analyzer
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
A magnifier used for reading small print is shaped like a hemisphere 2.0 cm in radius, placed on top of a cylinder of the same radius, Where does the image of the print appear to be
Two balls of masses Ma= 45 g and Mb= 65 g, are suspended. The lighter ball is pulled away to a 66 degree angle with the vertical and released. What is the velocity of the lighter ball before impact
A uniform plate of height 1.020 m is cut in the form of a parabolic section. Find the distance from the rounded tip of the plate to the center of mass
An air-gap parallel-plate capacitor that has a plate area of 1.80 m2 and a separation of 2.80 mm is charged to 80 V. What is the electric energy density between the plates
A circuit contains a resistor, a 0.0200-H inductor and 0.500microfaraday capacitor in series as shown. The time varying emf is 30.0V at a frequency of 1000Hz. The current flow through the circuit at this frequency is 128mA. Determine the value of the..
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.06 × 106 m/s, Find the centripetal acceleration of the electron
a truck is carrying a steel beam of length 17.0m on a freeway. an accident causes the beam to be dumped off the truck
a 2.40 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 ms.
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
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