How do you find the surface flux? Find the flux of the vector field in the negative z direction through the part of the surface z=g(x,y)=16-x^2-y^2 that lies above the xy plane (see the figure below). Hence, the flux through the surface in the downward z direction is -128*pi cubic units per unit time. What […]
How does velocity affect speed?
How does velocity affect speed? Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio. […]
What do you mean by net force?
What do you mean by net force? Net force is the vector sum of forces acting on a particle or body. The net force is a single force that replaces the effect of the original forces on the particle’s motion. It gives the particle the same acceleration as all those actual forces together as described […]
Where do we use maximum power transfer theorem?
Where do we use maximum power transfer theorem? The Maximum Power Transfer theorem is used to find the load resistance for which there would be the maximum amount of power transfer from the source to the load. The maximum power transfer theorem is applied to both the DC and AC circuit. What is the difference […]
What are examples of biological changes?
What are examples of biological changes? Interaction between organisms. the processes by which an organism has an observable effect on another organism of the same or different species. Also: cellular differentiation, fermentation, fertilisation, germination, tropism, hybridisation, metamorphosis, morphogenesis, photosynthesis, transpiration. What are the social changes that occur in adolescence? Social changes in adolescence Identity. Young […]
What is the relationship between gas and pressure?
What is the relationship between gas and pressure? For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle’s law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice […]
Why is a positive unemployment rate one more than zero percent fully compatible with full employment?
Why is a positive unemployment rate one more than zero percent fully compatible with full employment? A positive unemployment rate—one more than zero percent—is fully compatible with full employment because at full employment, unemployment includes frictional unemployment, which is always positive because people are transitioning to new jobs. What is the labor force size? The […]
Are polar compounds attracted to positive and negative charges?
Are polar compounds attracted to positive and negative charges? When things are different at each end, we call them polar. Some molecules have positive and negative ends too, and when they do, we call them polar. If they don’t, we call them non-polar. Things that are polar can attract and repel each other (opposite charges […]
How do air masses get their properties?
How do air masses get their properties? The properties of air masses are determined by the the underlying surface properties where they originate. Once formed, air masses migrate within the general circulation. Upon movement, air masses displace residual air over locations thus changing temperature and humidity characteristics. What do the properties of an air mass […]
What is the disadvantages of bridge rectifier?
What is the disadvantages of bridge rectifier? The main disadvantage of a bridge rectifier is that it needs four diodes, two of which conduct in alternate half-cycles. Because of this the total voltage drop in diodes becomes double of that in case of centre-tap rectifier, losses are increased and rectification efficiency is somewhat reduced. What […]