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A screw threaded into a blind hole often traps air that can become a virtual leak in the vacuum system. Consider a 1000-liter chamber containing eight 0.635 cm diameter screws, each of which leaves a 0.0794-cm space at the bottom of a blind hole. (a) What chamber pressure would be associated with this source of trapped gas? (b) Virtual leaks tend to release gas in bursts. If so, explain the pressure gauges you would use to monitor such leaks. Would you recommend digital gauge readouts?
A proton moves with a speed of 0.955c. Calculate its rest energy and Calculate its kinetic energy
A person with normal eyesight uses a converging lens of focal length 10 cm. At what distance from the job he must hold the lens
a thin metallic spherical shell of radius 40.1 cm has a total charge of 7.65 ?c uniformly distributed on it. at the
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 1.96 N. What is the linear mass density of the string
a circuit consists of a resistor in series with an inductor and an ac generator that supplies an rms voltage of 115 v.
A certain puddle of water has 1025 identical water molecules. As the temperature of this puddle falls to 0°C and below, the puddle freezes, resulting in a considerable change in the thermodynamic properties of this system.
On a banked race track, the smallest circular path on which cars can move has a radius of 112m, while the largest has a radius of 165m, as the drawing illustrates. The height of the outer wall is 18m. The largest speed at which cars can move on thi..
A playground merry-go-round has a radius of 4.20m and a moment of Inertia 240 kgm^2 and turns with negligible friction about a vertical axis through its center. What is the average power supplied by the child
a taut rope has a mass of 0.165 kg and a length of 3.55 m. what power must be supplied to the rope so as to generate
a mass-spring system has k=54.4 N/m and m=0.465kg. Find the period of its simple harmonic motion and Find the frequency of its simple harmonic motion
A 400g rubber ball is dropped a vertical distance of 12m. It remains in contact by the pavement for .01 sec and rebounds to a height of 10m. What is the total change in momentum? What average force is exerted by the floor on the ball?
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