What is the direction of acceleration of a particle in a uniform circular motion? An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction. The direction of the acceleration is inwards. The animation at the right depicts this by means of a vector […]
What happens when Aluminium is burnt in the presence of oxygen?
What happens when Aluminium is burnt in the presence of oxygen? Reaction of aluminium with air So, normally, aulumium metal does not react with air. If the oxide layer is damaged, the aluminium metal is exposed to attack. Aluminium will burn in oxygen with a brilliant white flame to form the trioxide alumnium(III) oxide, Al2O3. […]
What is a good water quality index?
What is a good water quality index? The index ranges from 1 to 100; a higher number indicates better water quality. The WQI graphs show lavender for low concern, light yellow for moderate concern, and red for high concern or poor water quality. What is Bangladesh standard for drinking water quality? Advocate for a review […]
How do I stop water from running under my house?
How do I stop water from running under my house? Proper drainage is the best way to keep water away from your home’s foundation. Install a French drain system around the house foundation – Dig a trench around the foundation, line it with gravel, and place a drain with perforations in it to pull the […]
What is the magnitude of the force on an electron between the plates?
What is the magnitude of the force on an electron between the plates? The electron accelerates toward the upper plate. The electric field strength between the plates is 4.8 X 10 newtons per coulomb. Why does the charge change as you move the plates? Moving the plates further apart decreases the capacitance, also reducing the […]
What is the direction of magnetic field at a point?
What is the direction of magnetic field at a point? Magnetic field lines are defined to have the direction that a small compass points when placed at a location. (a) If small compasses are used to map the magnetic field around a bar magnet, they will point in the directions shown: away from the north […]
Is 50 Cent or 50 greater?
Can a burnt out light bulb?
Can a burnt out light bulb? Regardless of the bulb type, if your light bulbs keep burning out long before they should, it’s time to investigate. There are many possible reasons why a light bulb burns out quickly: The power supply voltage may be too high. Bulbs may be loose or connected improperly. How do […]
Which would have the longer period pendulum A?
Which would have the longer period pendulum A? How does the length of a pendulum’s string affect its period? (Answer: A pendulum with a longer string has a longer period, meaning it takes a longer time to complete one back and forth cycle when compared with a pendulum with a shorter string. What length pendulum […]
Do objects float better in hot or cold water?
Do objects float better in hot or cold water? Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water. […]