What is the importance of a control group? The control group (sometimes called a comparison group) is used in an experiment as a way to ensure that your experiment actually works. It’s a way to make sure that the treatment you are giving is causing the experimental results, and not something outside the experiment. How […]
Why do projectiles not have horizontal acceleration?
Why do projectiles not have horizontal acceleration? Projectiles travel with a parabolic trajectory due to the influence of gravity, There are no horizontal forces acting upon projectiles and thus no horizontal acceleration, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical […]
How do you solve mu s?
Which type of reaction occurs in the core of a nuclear?
Which type of reaction occurs in the core of a nuclear? Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission. That heat is used to make steam that spins a turbine to create electricity. Why is it important […]
Does Npshr change with impeller diameter?
Does Npshr change with impeller diameter? At a given flow rate, the NPSHR increases as the impeller diameter is reduced. Pumps may cavitate at low flow rates due to recirculation of fluid at the impeller eye. The shape of the NPSHR curve is a U-shape. There is a slight rise in values as the flow […]
What is the smallest size of sediment particle?
What is the smallest size of sediment particle? Silt and mud grains, which are the smallest particles, settle even further from shore. When the particles are cemented together, each of these grain sizes forms a corresponding sedimentary rock: Gravel forms conglomerate, sand makes sandstone, silt makes siltstone, and clay forms claystone. How can you tell […]
What happens to the force when the distance is doubled?
What happens to the force when the distance is doubled? So as two objects are separated from each other, the force of gravitational attraction between them also decreases. If the separation distance between two objects is doubled (increased by a factor of 2), then the force of gravitational attraction is decreased by a factor of […]
How can the atmosphere be made more stable more unstable?
How can the atmosphere be made more stable more unstable? Warming the air above the ground and/or cooling the air next to the ground will make the atmosphere more stable. The ground and the air above it cool during the night. The atmosphere is usually most stable early in the morning. A temperature inversion represents […]
Which of the following describes the role of science in society?
Which of the following describes the role of science in society? Science is the greatest collective endeavor. In other words, science is one of the most important channels of knowledge. It has a specific role, as well as a variety of functions for the benefit of our society: creating new knowledge, improving education, and increasing […]
What is control and what are the six reasons control is needed?
What is control and what are the six reasons control is needed? (1) To Adapt to change and uncertainity. (2)To Discover Irregularities & Errors. (3) To Reduce costs, Increase Productivity, or Add Value. (4)To Detect Opportunities. (5) To Deal with Complexity. What is the first step of the control process? Controlling involves ensuring that performance […]