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The roadway of the golden gate bridge is 1320 m long and it is supported by a steel structure. If the temperature varies from -30C to 39C. how much does the length change? the result indicate the size of the thermal expansion joints that must be built into the structure. Without the joints the surfaces would buckle on very hot days or crack due to contraction on very cold days.
2) Give atleast two additional examples where the thermal expansion must be taken into account when designing structures or devices?
your optometrist recommends that you purchase reading glasses with a refractive powerof 3 diopters. determine the location of your near point or far point
A bulb in a table lamp has a current of 0.20 A through it. Determine the number of electrons leading to the bulb
a starship departs for the triple star system of Alpha/Proxima Centauri which is 4.30 LY from earth. what will be the reading of the clocks back on earth
A backpacker hikes northwest for 3 kilometer, then hikes west for 2.5 km. What is his resulting displacement
A converging lens by a focal length of 20 cm is set 25 cm in front of a diverging lens with a focal length of 15 cm. An object with a height of 2 cm is set 10 cm in front of the first lens. What is the location of the final image gauged from the se..
an automatic external defibrillator delivers 125j of energy at a voltage of 1050v. what is the capacitance of this
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
express the image distance si of a convex mirror in terms of the object distance so and the radius of curvature of the
Medical ultrasound. Ultrasound with = 5.8is used in a medical imager. Find the wavelength in air, with sound speed 343. Find the wavelength in muscle tissue
Common thermometers are made of a mercury column in a glass tube. which has the larger coefficient of linear expansion
A beam of sodium light (landa =589 nm) is incident from air on a smooth surfac of water at an angle of 65 degrees (with respect to the vertical). Determine the wavelength of the light in the water
A body of mass 2.9 kg makes an elastic collision by another body at rest and continues to move in the original direction however with one-fourth of its original speed, What is the mass of the other body? Kg
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