How do you express uncertainty in measurements? Uncertainties are almost always quoted to one significant digit (example: ±0.05 s). If the uncertainty starts with a one, some scientists quote the uncertainty to two significant digits (example: ±0.0012 kg). Always round the experimental measurement or result to the same decimal place as the uncertainty. What is […]
What is the main source of heat and light?
How does an internal combustion engine work simple?
How does an internal combustion engine work simple? The engine consists of a fixed cylinder and a moving piston. After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion. The expansion of the combustion gases pushes the piston during the power stroke. In a diesel engine, only air is inducted into the […]
Do ionic bonds share electrons?
Do ionic bonds share electrons? The two most basic types of bonds are characterized as either ionic or covalent. In ionic bonding, atoms transfer electrons to each other. In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons. Do ionic bonds have low […]
What are the 5 major types of biological macromolecules?
What are the 5 major types of biological macromolecules? There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. What are 4 macromolecules and their monomers? Monomers are the building blocks of the four basic […]
Why is water important in the carbon cycle?
Why is water important in the carbon cycle? Water provides the ingredients needed for plants to do photosynthesis and remove carbon dioxide. The oceans are another important carbon sink. Oceans take in carbon dioxide, which is either dissolved or incorporated into sea plants or animals. Is the carbon cycle a positive feedback loop? Complex systems […]
What are some ways to increase gravitational potential energy?
What are some ways to increase gravitational potential energy? Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational […]
What are the 3 parts of the hindbrain?
What are the 3 parts of the hindbrain? There are three main parts of the hindbrain – pons, cerebellum, and medulla oblongata. Most of the 12 cranial nerves are found in the hindbrain. What is the center of intelligence in the brain? Since the prefrontal cortex is the brain centre responsible for taking in data […]
What is universal law of gravitation explain?
What is universal law of gravitation explain? Alternative Title: Newton’s law of universal gravitation. Newton’s law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them. What is the law […]
How do you solve millimeters?
How do you solve millimeters? Multiply the centimeter measurement just before the end of your object by 10. Note the number of the last full centimeter measurement. Multiplying this number by 10 will convert the unit of measurement to millimeters and tell you how long your object is in millimeters up to this point. What […]