Category: Physics

What is transistor action? So in a NPN Transistor it is the movement of negative current carriers (electrons) through the Base region that constitutes transistor action, since these mobile electrons provide the link between the Collector and Emitter circuits. How many electrons are there in a transistor? There are about 6.24×1018 electrons per Coulomb, so […]

Where would your mass be greatest? Jupiter Which planet has the least amount of mass? The smallest planet in regards to both mass and volume is Mercury — at 4,879 km across and 3.3010 x 1023 kg, this tiny world is nearly 20 times less massive than Earth, and its diameter is about 2½ times […]

How do you calculate exponential population growth? From the given data, we can conclude the initial population value, x0, equals 10,000. Also, we have the growth rate of r = 5%. Therefore, the exponential growth formula we should use is: x(t) = 10,000 * (1 + 0.05)t = 10,000 * 1.05t . What is exponential […]

What is the newest food pyramid? The most recent update of the Dietary Guidelines came out in 2020, and it uses an updated MyPlate visual model. The 2020 MyPlate model, shown below, shows a plate containing the five food groups (fruits, vegetables, proteins, grains, and dairy) in a place setting. Which food group should you […]

What is unit of time and speed? Speed and velocity are both measured using the same units. The SI unit of distance and displacement is the meter. The SI unit of time is the second. The SI unit of speed and velocity is the ratio of two — the meter per second . What are […]

How many types of nerve ending are there? The four major types of tactile mechanoreceptors include: Merkel’s disks, Meissner’s corpuscles, Ruffini endings, and Pacinian corpuscles. Merkel’s disk are slow-adapting, unencapsulated nerve endings that respond to light touch; they are present in the upper layers of skin that has hair or is glabrous. Where do you […]

How can we recycle food waste at home? How to turn kitchen waste into compost? Step 1: Identify where you want to place your compost bin. It is ideal to have your composting spot in an open place or a place with good ventilation. Step 2: Segregate your waste. Step 3: Choose or build your […]

What are the similarities and differences between electric and magnetic forces? Similarities between magnetic fields and electric fields: Electric fields are produced by two kinds of charges, positive and negative. Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges). Like poles repel; unlike […]

How many watts are in a unit? 1000 Watts What is the SI unit of work done? Joule What is SI unit of Jule? Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named […]

What is the importance of sound in our life? The following are the importance of sound in our lives: It helps us to communicate with others. By sound, we can understand the context of the words spoken. Sound can help people to protect themselves from danger such as the sound or horn of the train […]