Why must a hypothesis be both testable and falsifiable? A Scientific Hypothesis Must Be Falsifiable A hypothesis may be testable, but even that isn’t enough for it to be a scientific hypothesis. In addition, it must be possible to show that the hypothesis is false if it really is false. Consider this statement: “There are […]
Which of these best describes a scientific theory answers com?
Which of these best describes a scientific theory answers com? Which statement best describes a scientific theory? A scientific theory is the best explanation for a praticular pattern of observations. What is scientific method in research? The scientific method is a standardized way of making observations, gathering data, forming theories, testing predictions, and interpreting results. […]
What are the main features of Rockwell hardness test?
What are the main features of Rockwell hardness test? The Rockwell hardness test is based on the measurement of the depth to which an indenter is forced by a heavy (major) load beyond the depth resulting from a previously applied preliminary (minor) load. What is the principle of Rockwell hardness test? Rockwell is a method […]
Which two solutions have similar solubilities at 40 C?
Which two solutions have similar solubilities at 40 C? Answer is: Na₂HAsO₄ and Na₂SO₄. 1) Solubility of NaCl (sodium chloride) at 40°C is 36.3 grams. Is the largest amount of solute that can dissolve? In most cases, only a certain maximum amount of solute can be dissolved in a given amount of solvent. This maximum […]
Why do we see rainbow colors in oil or bubbles?
Why do we see rainbow colors in oil or bubbles? Why do rainbow-like colors appear on the surface of oil? The wavelength corresponding to the constructive interference also differs and this causes the reflected light to have various colours. As a result, a rainbow-like colour pattern is shown on the oil surface and this phenomenon […]
What are the two features of plateau?
What are the two features of plateau? A plateau is a flat, elevated landform that rises sharply above the surrounding area on at least one side. Plateaus occur on every continent and take up a third of the Earths land. They are one of the four major landforms, along with mountains, plains, and hills. What […]
Why atleast one open heater is used?
Why atleast one open heater is used? Why at least one open heater is used? Explanation: The open heater works as a deaerator. Are open or closed feedwater heaters more efficient? Heat transfer in closed feedwater heaters is less effective since the two streams are not allowed to be in direct contact. Most steam power […]
What rifle can shoot the farthest?
What rifle can shoot the farthest? Accuracy International L115A3 Long Range Rifle In 2009, British Army sniper Craig Harrison set a new world record for the longest confirmed kill in history with his L115A3, the standard long-range marksman’s rifle of the British military. What’s the longest kill shot? 3,540 Meters: The Record-Breaking Longest Confirmed Sniper […]
What are the 10 steps of the rock cycle?
What are the 10 steps of the rock cycle? Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. (When magma is on the earth’s surface, it is called lava.)…When the particles are carried somewhere else, it is called erosion. Transportation. Deposition. Compaction & Cementation. What is the rock […]
How does an LDR change resistance?
How does an LDR change resistance? The LDR. LDRs (light-dependent resistors) are used to detect light levels, eg in automatic security lights. Their resistance decreases as the light intensity increases. In the dark and at low light levels, the resistance of an LDR is high, and little current can flow through it. Why does the […]