Can coefficient of drag be greater than 1? Two objects having the same reference area moving at the same speed through a fluid will experience a drag force proportional to their respective drag coefficients. Coefficients for unstreamlined objects can be 1 or more, for streamlined objects much less. Does drag coefficient change with size? The […]
Can you hear a radio wave?
Can you hear a radio wave? Yes, humans, under special circumstances, can hear radio-frequency pulses in the range of 2.4MHz to 10GHz (corresponding to radio frequencies and microwave) as buzzes, clocks, hiss or knocking at apparent auditory frequencies of 5kHz and higher (very high-pitched). … Can teeth pick up radio signals? The electrical conductivity of […]
Where are water masses formed?
Where are water masses formed? Water masses are formed as the result of climatic effects in specific regions. Antarctic bottom water is an important water mass that forms on the Antarctic continental shelf as a cold, dense residual brine during the formation of sea ice. Which water mass is the saltiest in the world? That […]
How is charge transfer calculated?
How is charge transfer calculated? Measurements of charge transfer may be made either measuring the voltage developed across a capacitor to earth, instead of the resistor, or using a virtual earth charge measurement amplifier. Another approach is to integrate discharge current flow measurements over the duration of the discharge. Can you transfer battery power from […]
How does Leaning Tower of Pisa not fall?
How does Leaning Tower of Pisa not fall? In the end, the Leaning Tower of Pisa does not fall because its center of gravity has been carefully kept within its base. The Leaning Tower doesn’t fall because its center of gravity is carefully kept within its base. How did Galileo discover free fall? Galileo conducted […]
Does falling snow absorb sound?
Does falling snow absorb sound? When the ground has a thick layer of fresh, fluffy snow, sound waves are readily absorbed at the snow surface, dampening sound. However, time and weather conditions may change the snow surface. Then the surface will help reflect sound waves. Sounds may seem clearer and travel farther under these circumstances. […]
How can we determine the size of the Earth?
How can we determine the size of the Earth? It was generally agreed upon that measuring the size of Earth could be done by measuring the altitude of a star from two cities situated on the same meridian. Then, a difference expressed in degrees would be found. How is the Earth’s curvature measured? How could […]
Why do electrons want to be stable?
Why do electrons want to be stable? A complete octet is very stable because all orbitals will be full. Atoms with greater stability have less energy, so a reaction that increases the stability of the atoms will release energy in the form of heat or light. A stable arrangement is attended when the atom is […]
How is a nucleus formed?
How is a nucleus formed? The vesicles first fuse to form membranes around individual chromosomes, which then fuse with each other to form a complete single nucleus. What is the nucleus covered by? nuclear membrane Why nucleus is the most important organelle? The Nucleus contains the genetic material, also known as DNA, which is responsible […]
What is the application of sound?
What is the application of sound? While we cannot hear ultrasonic waves, we apply them in various technologies such as sonar systems, sonograms, surgical tools, and cleaning sytems. Some animals also use ultrasonic waves in a specialized technique called echolocation that alows them to pinpoint objects and other animals, even in the dark. What are […]