An unevenly weighted baton (cylindrical in shape) consists of two sections: a denser (lower) section and a less dense (upper) section. When placed in water, it is upright and barely floats. The baton has a diameter of 2.00 cm; its lower part is made of steel with a density of 7800 kg/m3, and the upper part is made of wood with a density of 5.00 cm. The steel part has a length of 5.00 cm. Find the length of the wooden section.
Answer to relevant Questions(a) Referring to the metal rod in Figure 9.2a (under tensile stress), show that Eq. 9.4 can be rewritten to resemble a Hooke’s law type of spring relationship for the rod. That is, show that it can be written as F = k ...A metal wire 1.0 mm in diameter and 2.0 m long hangs vertically with a 6.0-kg object suspended from it. If the wire stretches 1.4 mm under the tension, what is the value of Young’s modulus for the metal? A person running a fever has a body temperature of 40 oC. What is this temperature on the Fahrenheit scale? (a) Derive an equation for converting Fahrenheit temperatures directly to absolute temperatures in kelvins. (b) Which is the lower temperature, or 300 K? Is there a temperature that has the same numerical value on the Kelvin and the Fahrenheit scales? Justify your answer.
Post your question