what system helps the body maintain homeostasis by giving it the nutrients it needs to perform different functions
Which object possesses more gravitational potential energy: a 2-kilogram ball at 2.2 meters above the ground or a bullet that is .15 kilograms at a height of 74 meters above the ground? Explain.
observational data is easier to analyze and interpret when it is organized into tables, charts or graphs T or F?
Which was a testable idea that Ernest Rutherford developed in his experiments? - The positive charge in an atom is concentrated in one location. - Atoms are not divisible into smaller particles. - It is impossible to define the mass of an atom. - The atom contains no particles that have a neutral charge.
Only answer if you know all of them The connections between neurons in the retina, specifically the connections referred to as “lateral inhibition,” help us see which of the following better? AContrast BFaces CColors Improving the contrast of an image (making the dark regions darker and the light regions lighter) helps us to identify: AThe edges of objects BThe center of objects CThe color of an object What assumption does our visual system make in order to see curved surfaces (domes, holes)? ALight comes from above BCurved surfaces are always evenly lit CCurved surfaces are always easy to see, no assumptions are made Which part of the face does our brain pay the most attention to? AEyes and mouth BEyes and ears CEyes and chin If all these assumptions sometimes lead to mistakes, for example in these optical illusions, why do we make them? AIt helps us see things faster BIt helps us see things correctly CIt helps us pay attention to what's important DAll of the above
A person drops a brick from the top of a building. The height of the building is 400 m and the mass of the brick is 2.00 kg. What will be the speed of the brick right before it touches the ground? Use g=10.0 m/s^2.
An iron rod is : A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of heat and electricity A and D are out
