How does a roller coaster work without an engine? As the roller coaster falls, it accelerates and builds up enough kinetic energy to propel it through the remainder of the ride. No engine is required because of inertia. As you ride a roller coaster, its wheels rub along the rails, creating heat as a result […]
What is the wavelength of light in water?
What is a simple frequency distribution?
What is a simple frequency distribution? A frequency distribution is a representation, either in a graphical or tabular format, that displays the number of observations within a given interval. The interval size depends on the data being analyzed and the goals of the analyst. Frequency distributions are typically used within a statistical context. Why should […]
What organelle is responsible for growth?
What organelle is responsible for growth? Known as the cell’s “command center,” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information. What organelle is responsible for plant growth and how? Chloroplasts How does […]
What is the working principle of scanning electron microscope?
What is the working principle of scanning electron microscope? Scanning electron microscopes (SEMs) use an electron beam to image samples with a resolution down to the nanometer scale. The electrons are emitted from a filament and collimated into a beam in the electron source. The beam is then focused on the sample surface by a […]
What is the most important origin of life?
What is the most important origin of life? RNA World has been the prevailing theory for the origin of life since the 1980s. The emergence of a self-replicating catalytic molecule accounts for signature capabilities of living systems, but it doesn’t explain how the protobiological molecule itself arose. What is the Cosmozoic theory? Cosmozoic theory is […]
What is the best fertilizer for plants?
What is the best fertilizer for plants? Fertilizer Selection Most gardeners should use a complete fertilizer with twice as much phosphorus as nitrogen or potassium. An example would be 10-20-10 or 12-24-12. These fertilizers usually are easy to find. Some soils contain enough potassium for good plant growth and don’t need more. What liquids are […]
Why is power transmitted at high voltage?
Why is power transmitted at high voltage? The primary reason that power is transmitted at high voltages is to increase efficiency. The higher the voltage, the lower the current. The lower the current, the lower the resistance losses in the conductors. And when resistance losses are low, energy losses are low also. What are the […]
Who is the father of laptop?
Who is the father of laptop? Bill Moggridge What is the oldest computer component? The US-built ENIAC (Electronic Numerical Integrator and Computer) was the first electronic programmable computer built in the US. Although the ENIAC was similar to the Colossus it was much faster and more flexible. What computer was invented in 1960? Digital introduced […]
What are examples of human traits?
What are examples of human traits? Most traits are determined by more than one gene. For example, skin color and height are determined by many genes…. Interlocking fingers. Interlock fingers. Ear lobes. Widow’s peak. Tongue curling. Hitch hiker’s thumb. Pigmented iris. PTC tasting. Are all human characteristics inherited? While a few traits are due to […]