Category: Physics

What are the requirements of database? In the spirit of David Letterman’s Top Ten lists, here is a look at what IT management requires from database management systems (DBMSs). System-Level Data Recovery. Application-Level Data Recovery. Application Data Availability. Multi-Level Data Security. Application Performance. Scalability: Users, Transactions, Data. What are the requirements of relational model? Best […]

What is the ability to change matter? Energy is defined in science as the ability to move matter or change matter in some other way. Energy can also be defined as the ability to do work, which means using force to move an object over a distance. How does energy cause changes? HOW DOES ENERGY […]

Which type of mirror can form a real image? Solution: Concave mirrors can form real images. Convex and plane mirrors always form virtual images. Want to top your science exam ? How important is plane mirror to you? Plane mirror reflections create upright virtual images at the same magnification, or size, and distance as the […]

When and where are hydraulics used? They use hydraulics to increase water pressure for better cleaning. Dishwashers fitted with hydraulics are also generally quieter. Construction machines. Equipment such as cranes, forklifts, jacks, pumps and fall arrest safety harnesses use hydraulics to lift and lower objects. Are car hydraulics legal? A car with hydraulics over the […]

What is an example of speed and velocity? Put another way, speed is a scalar value, while velocity is a vector. For example, 50 km/hr (31 mph) describes the speed at which a car is traveling along a road, while 50 km/hr west describes the velocity at which it is traveling. What are 3 examples […]

Is there a ball that can bounce forever? The law of conservation of energy implies that a bouncing ball will bounce forever. Of course, it does not. When you drop it on the floor, it changes some of its energy into other forms, such as heat, each time it hits the floor. What are bouncy […]

What is Mew M? The micrometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equalling 1×10−6 metre (SI standard prefix “micro-” = 10−6); that is, one millionth of a metre (or […]

What do you mean by eigen value and eigen function? Such an equation, where the operator, operating on a function, produces a constant times the function, is called an eigenvalue equation. The function is called an eigenfunction, and the resulting numerical value is called the eigenvalue. Eigen here is the German word meaning self or […]

Which is called the living part of a cell? Protoplasm (/prəʊtə(ʊ)ˌplaz(ə)m/, plural protoplasms) is the living part of a cell that is surrounded by a plasma membrane. In some definitions, it is a general term for the cytoplasm (e.g., Mohl, 1846), but for others, it also includes the nucleoplasm (e.g., Strasburger, 1882). Is a living […]

Do volcanoes cause lightning? Volcanic lightning arises from colliding, fragmenting particles of volcanic ash (and sometimes ice), which generate static electricity within the volcanic plume, leading to the name dirty thunderstorm. Moist convection and ice formation also drive the eruption plume dynamics and can trigger volcanic lightning. What does volcanic earthquake mean? A volcano tectonic […]