By how much does the statue compress the stand
A 3500 kg statue is placed on top of a cylindrical concrete (Y = 2.3 x 1010N/m2) stand. The stand has a cross sectional area of 7.3 x 10-2m2 and a height of 1.8 m. By how much does the statue compress the stand?
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A unit of area, often used in measuring land areas, is the "hectare", defined as 104 m2. An open-pit coal mine consumes 83 hectares of land, down to a depth of 27 m, each year. What volume of earth, in cubic kilometers, is removed in this time?
An electron starts from rest 0.05m from the centre of a uniformly charged sphere of radius 0.03m. If the sphere carries a total charge of 1.00 X 10 minus 9 C (or 1.0 nC), how fast will the electron be moving when it reaches the surface of the sphe
It is illuminated normally by white light. Analysis of the reflected light shows that the wavelengths 360, 450, and 602 nm are the only missing wavelengths in or near the visible portion of the spectrum. That is, for these wavelengths, there is de
(a) Find the electric flux through each of the six faces of the cube. (b) Add the six values obtained in part (a) to show that the electric flux through the cubical surface is zero, as Gauss' law predicts, since there is no net charge within the c
For many years the posted highway speed limit was 88.5km/hr (55mi/hr) but in recent years some rural stretches of highway have increased their speed limit to 104.6km/hr (65mi/hr). In Maine, the distance from Portland to Bangor is 215km. How much t
A peice of wood one foot square and one inch thick has a specific gravity of .5. what volume of lead would have to be attached to the bottom of the wood so that the top of the wood would be even with the water surface in a water tank? Specific gra
A uniform rod is resting on a frictionless table when it is suddenly struck at one end by a sharp horizontal blow in a direction perpendicular to the rod. The mass of the rod is M and the magnitude of the impulse applied by the blow is J. (Use any
Assuming that the particle's velocity is perpendicular to the magnetic field, find the radius of the circular path on which the particle would move if it were each of the following.
Two identical strings are fixed on both ends. The first string is vibrating in its fundamental mode and it is observed that the other string begins to vibrate at its third harmonic, driven by the first string. What is the ratio of the tension of t
The current in an incandescent lamp is 0.5A when connected to a 120-V circuit, and 0.2 A when connected to a 10-V source. Does the resistance of the lamp change in these cases? Explain your answer and defend it with numerical values.
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