Is total momentum conserved when a ball hits a wall? When it hits a vertical wall it rebounds with a horizontal velocity v to the left. Since momentum is mass times velocity there would be a tendency to say momentum has been conserved. This means its velocity vector becomes v’=(−vx, vy). Is momentum a flux? […]
What are two-dimensional drawings?
What are two-dimensional drawings? The abbreviation for two-dimensional drawing is 2-D, and it describes a view having only width and height, width and length, or height and length dimensions. Two-dimensional drawings are the established design and drafting format and are common in all engineering and architectural industries and related disciplines. Is QR Code 2D or […]
Why do ions exist?
Why do ions exist? Ions form when atoms gain or lose electrons. Since electrons are negatively charged, an atom that loses one or more electrons will become positively charged; an atom that gains one or more electrons becomes negatively charged. Ionic bonding is the attraction between positively- and negatively-charged ions. Can ions exist alone? An […]
What is the cross product of two vectors?
What is the cross product of two vectors? Given two linearly independent vectors a and b, the cross product, a × b (read “a cross b”), is a vector that is perpendicular to both a and b, and thus normal to the plane containing them. It has many applications in mathematics, physics, engineering, and computer […]
What is one strength and one limitation of using an independent samples design?
What is one strength and one limitation of using an independent samples design? Advantages of independent measures design include less time/money involved than a within subjects design and increased external validity because more participants are used. A disadvantage is that individual differences in participants can sometimes lead to differences in the groups’ results. What are […]
Why nanotechnology is so important?
Why nanotechnology is so important? Why is nanotechnology important? Nanotechnology improves existing industrial processes, materials and applications by scaling them down to the nanoscale in order to ultimately fully exploit the unique quantum and surface phenomena that matter exhibits at the nanoscale. What is the advantage of nanotechnology? Nanotechnology: Advantages and Disadvantages Advances in disease […]
Why is efficient transportation important?
Why is efficient transportation important? When transport systems are efficient, they provide economic and social opportunities and benefits that result in positive multiplier effects such as better accessibility to markets, employment, and additional investments. Transport carries an important social and environmental load, which cannot be neglected. How can we reduce transportation energy? Observe speed limits, […]
What affects molar mass?
What affects molar mass? It is the mass of 1 mole of the substance or 6.022×1023 particles, expressed in grams. The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes. […]
What is the most common type of igneous rock?
What is the most common type of igneous rock? Basalt What is the most common extrusive rock? basalt How do you know if a rock is extrusive? Extrusive rocks are usually fine-grained or glassy while intrusive rocks are coarse-grained. Extrusive rocks may contain trapped bubbles of gas called vesicles. Are intermediate rocks? Intermediate rocks are […]
Is Gin bad for your liver?
Is Gin bad for your liver? It can help fight kidney and liver disease Gin is the best natural remedy for kidney and liver disease. Juniper berries help stop water retention in your body, allowing you to pass more water than any other alcohol. This means that more harmful toxins and bacteria are flushed out […]