What is meant by laws of motion? 1 : a statement in dynamics: a body at rest remains at rest and a body in motion remains in uniform motion in a straight line unless acted upon by an external force. — called also Newton’s first law of motion. What is the three laws of motion? […]
Which type of power plant is best?
Which type of power plant is best? Hydroelectric power plants. Hydroelectric power plants are one of the most effective and eco-friendliest of all power plants. Nuclear power plants. Nuclear power stations also top the list of power plants that can produce massive amounts of energy. Coal-run power plants. Where was the first power plant? Pearl […]
What happens to a dead star?
What happens to a dead star? Stars die because they exhaust their nuclear fuel. Once there is no fuel left, the star collapses and the outer layers explode as a ‘supernova’. What’s left over after a supernova explosion is a ‘neutron star’ – the collapsed core of the star – or, if there’s sufficient mass, […]
How does a streams gradient affect its velocity?
How does a streams gradient affect its velocity? Gradient is usually expressed in feet per mile of meters per kilometer. Gradient looks at how far the water drops over the distance the water actually flows. The gradient influences the velocity of the stream. The steeper the gradient, the higher will be the velocity if all […]
Why do black bodies radiate?
Why do black bodies radiate? A black body is an idealized object that absorbs all electromagnetic radiation it comes in contact with. It then emits thermal radiation in a continuous spectrum according to its temperature. Much cooler objects like planets and humans emit the most radiation in the infrared. Can radiation travel through a vacuum? […]
Is it dark during solar eclipse?
Why is the slope of a velocity-time graph acceleration?
Why is the slope of a velocity-time graph acceleration? The slope of a velocity graph represents the acceleration of the object. So, the value of the slope at a particular time represents the acceleration of the object at that instant. How do you find the slope of a velocity-time graph? Using the Slope Equation Pick […]
What are the high points and low points of a transverse wave called?
Where are the objective lenses located on a microscope?
Where are the objective lenses located on a microscope? The objective lens of a microscope is the one at the bottom near the sample. At its simplest, it is a very high-powered magnifying glass, with very short focal length. This is brought very close to the specimen being examined so that the light from the […]
What was the source of power in the Middle Ages?
What was the source of power in the Middle Ages? Even as agriculture emerged, followed by towns and cities, human muscles — and those of domesticated animals — were still the main source of power. How has energy consumption changed over the past 50 years? Over the last 50 years, while energy consumption grew substantially, […]