What is the effective resistance between A and D? D=5Ω+10Ω+5Ω=20Ω What is the effective resistance in the given circuit? The effective resistance of a circuit containing resistances in parallel is smaller than any of the individual resistances. For example : R1=2Ω and R2=3Ω ∴ Effective resistance Rp1=R11+R21. Maximum effective resistance will be when all the […]
What is the half-life of AU 198?
What is the half-life of AU 198? 2.697 days How do you calculate the half-life of sodium 24? Notice that the time period between each of the yellow crosses is 15 hours. This tells us that the count rate of Sodium-24 halves every 15 hours. In other words, the activity of Sodium-24 is halved every […]
Why am I burning through coils so fast?
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 […]
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 […]
Why did I gain 5 lbs overnight?
Why did I gain 5 lbs overnight? What Makes You Gain Weight Overnight? Many different things, such as water retention due to sodium, hormones, meal timing, and stress can make you gain weight overnight. The reason people gain weight after a night of eating out is most likely due to increased sodium and carbohydrate intake. […]