Are scientists respected? A new international YouGov survey of more than 22,000 people in 16 countries reveals the most and least respected professions. Coming top of the list are scientists, with an average score of +72 across the 16 countries. How teamwork is important? To have a meaningful and lifelong career, you need to work […]
What is the first step of solar system formation?
What are theories based on?
What are theories based on? Theory basics Theories are concise, coherent, systematic, predictive, and broadly applicable, often integrating and generalizing many hypotheses.” Any scientific theory must be based on a careful and rational examination of the facts. Facts and theories are two different things. Can a theory ever be proved to be absolutely true? But […]
Does tall grass grow slower?
Does tall grass grow slower? Tall Grass Benefits Allowing grass to grow slightly longer than 2 inches helps it sustain itself during stressful periods, like long dry spells or heat waves. The extra blade length provides more energy production for the rest of the grass. However, do not let lawn grass grow wildly long, such […]
What is the best way you can help prepare for a natural disaster?
What is the best way you can help prepare for a natural disaster? Pack an emergency preparedness kit Drinking water (at least one gallon per person per day) Nonperishable food, such as canned veggies and protein bars. Manual can opener. Flashlights or portable lanterns and extra batteries. First aid kit. A crank- or battery-powered radio. […]
Does negative thinking cause bad things to happen?
Does negative thinking cause bad things to happen? Negative thinking is our enemy. It dampens our enthusiasm and motivation. It contributes to indecision, inertia, procrastination and outright derailment of our goal-directed actions. How does negative self-talk affect athletes? This type of negative self-talk can prevent a young athlete from performing well and create a negative […]
Why can chlorine oxidise Fe2+ to Fe3+?
Why can chlorine oxidise Fe2+ to Fe3+? It is a good oxidising agent. Iron(II) ions are easily oxidised to iron(III) ions, and iron(III) ions are fairly easily reduced to iron(II) ions. That means that Fe3+ ions don’t pick up electrons as easily as chlorine does. Chlorine is a stronger oxidising agent than Fe3+ ions. Why […]
Does a condenser reduce pressure?
Does a condenser reduce pressure? Temperature profile inside the condenser In a similar way to evaporation, the only pressure difference between the entrance and the exit of the heat exchanger is the pressure drop. Because the flow velocity in a condenser decreases, the induced pressure drop is much lower than in an evaporator. What causes […]
What is formula for volume of a cube?
What three things can light rays travel through?
What three things can light rays travel through? The part of optics dealing with the ray aspect of light is called geometric optics. Light can travel in three ways from a source to another location: (1) directly from the source through empty space; (2) through various media; and (3) after being reflected from a mirror. […]