Category: Physics

What is the difference between cell potential and EMF? The potential difference is the measure of energy between any two points on the circuit. The EMF is the maximum voltage that the battery can deliver whereas the magnitude of the potential difference is always less than the maximum possible value of emf. What is greater […]

What are the two types of errors? Two types of error are distinguished: Type I error and type II error. The first kind of error is the rejection of a true null hypothesis as the result of a test procedure. This kind of error is called a type I error (false positive) and is sometimes […]

What is the longest waterfall in the world? Angel Falls In which country is the world’s highest waterfall? Venezuela What are the 5 biggest waterfalls in the world? The Top 10 Tallest Waterfalls in the World Langfoss. #8 LANGFOSS. Snow Creek Falls from Half Dome. #7 SNOW CREEK FALLS. Yosemite Falls. #6 YOSEMITE FALLS. Kjelfossen. […]

What is V in circular motion? Because the velocity is fixed in magnitude at v = r ω, the velocity vectors also sweep out a circular path at angular rate ω. As dt → 0, the acceleration vector a becomes perpendicular to v, which means it points toward the center of the orbit in the […]

How do I know what bat size to use? Position the bottom of the bat in the center of your chest, facing outward. If your arm can reach out and grab the barrel of the bat, then it is the correct length. Stand the bat up against the side of your leg. If the end […]

How can you reduce your negative impact on the environment when using technology? Here are 5 ways to harness the power of technology for environmental good and start lowering the eco-footprint of your office, store, or agency. Purchase ENERGY STAR office equipment. Switch to renewable energy. Go paperless. Buy a smart thermostat. Encourage a remote […]

What is the current carrying conductor? As it is carrying current (DC), some flux lines will be generated around the conductor and they are concentric with the central axis of the conductor. So an electromagnetic field is established due to this current through this conductor. Can you make your own magnetic fields? By simply wrapping […]

How does salt make water more dense? Adding salt to the water increases the density of the solution because the salt increases the mass without changing the volume very much. When enough salt is added to the water, the saltwater solution’s density becomes higher than the egg’s, so the egg will then float! Is white […]

What happens if we reach 1.5 degrees? Bottom line: Going above 1.5 degrees of warming puts millions more at risk of potentially life-threatening heatwaves and poverty. It all but wipes out coral reefs that entire ecosystems rely on worldwide. Why is 1.5 degrees such a big deal? Why is 1.5 degrees such a big deal? […]

What is base in a transistor? Base – The middle section of the transistor is known as the base. The base forms two circuits, the input circuit with the emitter and the output circuit with the collector. The emitter-base circuit is in forward biased and offered the low resistance to the circuit. Why do transistors […]