What is working distance in SEM? The working distance in the SEM is the distance at which the beam is focussed, normally the distance from the final pole piece of the lens to the sample when the image is in focus. It is variable by moving the stage up and down (Z-height) and by focussing […]
What are the two types of hydroelectricity?
What are the two types of hydroelectricity? There are two main types of hydro turbines: impulse and reaction. The type of hydropower turbine selected for a project is based on the height of standing water—referred to as “head”—and the flow, or volume of water, at the site. Which turbine is used for high head? Hydropower […]
Why do sound waves travel faster in low density gas?
Why do sound waves travel faster in low density gas? In a gas, it is particularly important to know the temperature. This is because at lower temperatures, molecules collide more often, giving the sound wave more chances to move around rapidly. At freezing (0º Celcius), sound travels through air at 331 meters per second (about […]
How do unicellular organisms move?
How do unicellular organisms move? Unicellular organisms can move in two distinct ways—movement and locomotion. Movement enables an organism to change its form or shape. Unicellular organisms achieve locomotion using cilia and flagella. By creating currents in the surrounding environment, cilia and flagella can move the cell in one direction or another. How long can […]
Is most responsible for the uneven heating?
Is most responsible for the uneven heating? Answer Expert Verified. The answer would be convection currents. Convection happens when atoms with a lot of heat energy in a liquid or gas transfer and get the room of particles with fewer heat energy. Heat energy is transported from hot places to cooler places by convection. How […]
How many types of transducers are there?
How many types of transducers are there? two What is dynamic error in measurement? Dynamic error: It is the difference between the true value of the quantity changing with time & the value indicated by the measurement system if no static error is assumed. It is also called measurement error. What is the smallest change […]
Does a sponge adsorb or absorb?
Does a sponge adsorb or absorb? Many of us use the analogy of a sponge for absorption. The sponge readily sucks up water and then readily releases it when we mechanically squeeze the sponge. This is because at least some of the dampness (although not all) is adsorbed water. How much water will silica gel […]
How do spacecraft slow down?
How do spacecraft slow down? To slow down, you fire a forward-facing thruster. To alter your course, you fire a thruster in a sideward direction. To rotate your spacecraft, you fire a pair of sideward-pointed thrusters located near opposite sides of the spacecraft. How do you stop a spaceship? This can be accomplished by spinning […]
What is the difference between a Monohybrid cross and a Punnett square?
What is the difference between a Monohybrid cross and a Punnett square? For a monohybrid cross (Table below), individual alleles are used, whereas for a dihybrid cross (Table below), pairs of alleles are used. A Punnett square for a monohybrid cross is divided into four squares, whereas a Punnett square for a dihybrid cross is […]
How do you explain energy transformation?
How do you explain energy transformation? Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation. How […]