When should you let go of your first bowling ball? 40 – When you first let go of a bowling ball, it’s not rotating. It begins to rotate as it slides down the alley. Use energy concepts to explain why the ball’s forward speed decreases as it begins to spin. The bowling ball starts with […]
Why is it harder to open and shut the door if we apply force near the hinge?
Where do we use Fourier series?
Where do we use Fourier series? The Fourier series has many such applications in electrical engineering, vibration analysis, acoustics, optics, signal processing, image processing, quantum mechanics, econometrics, shell theory, etc. What is CTFT? The Continuous-Time Fourier Transform (CTFT) is the version of the fourier transform that is most common, and is the only fourier transform […]
How is work related to internal energy?
How is work related to internal energy? The relationship between the internal energy of a system and its heat and work exchange with the surroundings is: E = q + w (The form of work will be restricted to gaseous, PV-type for this discussion.) Interestingly, both q and w are not state functions. What is […]
Which of these is an example of freshwater wetlands?
Which of these is an example of freshwater wetlands? Marshes, bogs, and lakes are examples of freshwater wetlands. Are all wetlands freshwater? Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish, or saltwater. The main wetland types are swamp, marsh, bog, and fen; sub-types include mangrove forest, carr, pocosin, floodplains, […]
Does white light absorb all colors?
Does white light absorb all colors? A white object reflects all colors of white light equally. If an object absorbs all colors but one, we see the color it does not absorb. The yellow strip in the following figure absorbs red, orange, green, blue, indigo and violet light. When a color is removed from white […]
What is the chance that a child will inherit the disorder if one parent is heterozygous for this gene and one parent has cystic fibrosis?
What is the chance that a child will inherit the disorder if one parent is heterozygous for this gene and one parent has cystic fibrosis? For example in cystic fibrosis if both parents are heterozygous, each child has a 25% chance of being born with cystic fibrosis. Some genetic diseases are caused by a dominant […]
How is the 21 cm line of hydrogen formed?
How is the 21 cm line of hydrogen formed? The hydrogen line, 21-centimeter line, or H I line is the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This line is also the theoretical basis of hydrogen maser. What is the 21-cm line used for? […]
Why is door lock not working?
Why should I take earth science?
Why should I take earth science? Earth science is an integrated science, bringing together biology, chemistry, and physics as they apply to the workings of Earth. The applied, and often visual, nature of earth science helps learners see its relevance to their lives and to their communities. Should I take physics or chemistry? I definitely […]