Assuming the stone starts from rest and air resistance is negligible, the depth of the mine shaft can be found by solving the equation x = 1/2 at^2, where "x" is distance, "a" is acceleration due to gravity, and "t" is time. The answer is 176.4 meters or 588 feet.
Know MoreThe value of a is 9.8 meters per second squared. The value of t is 6 seconds. Therefore, 0.5 x 9.8 x 36 equals 176.4 meters. In practice, air resistance extends the time it takes the stone to hit the bottom of the mine shaft by a fraction of a second. As such, the actual depth of the mine shaft would be a few meters less than the result obtained from the equation.
Learn more about PhysicsHumans evolved with gravity, and gravity affects human physiology and general health. Studies show that weightlessness has a number of negative health effects. Finding ways to mitigate these dangers is essential for long-distance space travel.
Full Answer >To read a specific gravity meter, or hydrometer, place the specific gravity meter in the liquid with the bulb facing downward, and note the number that is at the meniscus. In most containers, the surface of the liquid is curved. The bottom of that curve is the meniscus.
Full Answer >The specific gravity of mercury is 13.6. Specific gravity is also called relative density and is the ratio of the density of one substance to that of a standard substance such as water. Density is an object's mass per unit volume.
Full Answer >Depending on the nature of its composition, the specific gravity of gasoline can vary between 0.71 and 0.77. The specific gravity of common vehicular gasoline is approximately 0.74.
Full Answer >