What is the relationship between rolling static and sliding friction? Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases. What is the cause of friction What is the difference between […]
What are some ecology questions?
What are some ecology questions? The Big Questions in Ecology and Evolution Why does life exist at all? What makes life different from non-life? Why do some individuals die and some live? How to do living things survive? How random is nature? Why don’t we live forever? Why do life forms look the way they […]
Can white noise kill you?
Can white noise kill you? Does Noise harm your Brain? Well yes. It turns out, the continuous background noise also known as white noise which comes from machines and other appliances, can harm your brain, it does so by overstimulating your auditory cortex– the part of the brain that helps us perceive sound. And it’s […]
What are five adaptations of plants?
What are five adaptations of plants? Plants have evolved several adaptations to life on land, including embryo retention, a cuticle, stomata, and vascular tissue. What is an example of a behavioral adaptation in plants? Behavioural adaptations in plants Plant roots which grow downwards may be because of gravity or growing directly towards water to maximise […]
Why is the work output of a machine always less than the work input?
Why is the work output of a machine always less than the work input? Although nearly equal, the output work is less than the input work because of friction. All machines use some amount of input work to overcome friction. The only way to increase the work output is to increase the amount of work […]
Is Melting exothermic or endothermic?
Is Melting exothermic or endothermic? Phases and Phase Transitions Phase Transition Direction of ΔH Fusion (Melting) (solid to liquid) ΔH>0; enthalpy increases (endothermic process) Vaporization (liquid to gas) ΔH>0; enthalpy increases (endothermic process) Sublimation (solid to gas) ΔH>0; enthalpy increases (endothermic process) What are two examples of exothermic? Examples of Exothermic Reactions any combustion reaction. […]
What is the wavelength of light that has a frequency of 6 x 10 14 Hz?
Why is my phone compass so wrong?
Why is my phone compass so wrong? Some people have found that the compass recalibrates in the wrong direction after dropping their phone, or their phone compass simply starts to point in the wrong direction over time. Wrong – instead, phone manufacturers have used the motion sensing capabilities of modern smartphones to create a motion-based […]
What happens when a fluid cools down?
What happens when a fluid cools down? Answer: When the fluid cools, the kinetic energy of the molecules decreases. This causes the molecules to slow down and move closer together. Since the molecules are closer together, the density of the fluid increases and the fluid sinks. What best describes how fluids change as they travel? […]