Category: Physics

What is the slope of the line with vector equation? Clearly the answer is that the slope is the dot product of the two vectors: slope = g · u. There are two ways to think of the slope of a linear function in a given direction. We can use a symbol, such as s, […]

What are two types of energy that can be released when something burns? When we burn Natural Gas, the chemical energy is converted into light and heat. Chemical energy is energy that is stored in the bonds between chemical compounds. It is released when a chemical reaction takes place. What types of energy does the […]

Can a graph have 2 y axis? When the data values in a chart vary widely from data series to data series, or when you have mixed types of data (for example, currency and percentages), you can plot one or more data series on a secondary vertical (Y) axis. Can you have two Y axis […]

What is selective breeding and why is it important? Selective breeding, also known as artificial selection, is a process used by humans to develop new organisms with desirable characteristics. Selective breeding can be used to produce tastier fruits and vegetables, crops with greater resistance to pests, and larger animals that can be used for meat. […]

What is gravitational equilibrium? Hydrostatic equilibrium, also known as gravitational equilibrium, describes a balance between gravity and pressure. Gravity works to contract while pressure works to expand. Hydrostatic equilibrium is the state where the force of gravity pulling inward is balanced by pressure pushing outward. What is heating the corona? The coronal heating problem in […]

What is metal ductility? Material properties Ductility is the ability of a material to be drawn or plastically deformed without fracture. It is therefore an indication of how ‘soft’ or malleable the material is. The ductility of steels varies depending on the types and levels of alloying elements present. Is all metals are ductile? Answer […]

What is the dimensional formula for gas constant? Or, G = [M1 L-1 T-2] × [L3] × [K1]-1 = [M1 L2 T-2 K-1]. Therefore, the gas constant is dimensionally represented as [M1 L2 T-2 K-1]. What is the dimensional formula of Boltzmann constant? Or, k = [M1 L2 T-2] × [M0 L0 T0 K1]-1 = […]

How do you check if your immune system is strong? Your body shows signs of a strong immune system pretty often. One example is when you get a mosquito bite. The red, bumpy itch is a sign of your immune system at work. The flu or a cold is a typical example of your body […]

Why do people put their wheels under a heavy box? Why does placing wheels under a heavy box reduce the necessary force required to push it along at a constant speed? The wheels are causing less friction between the ground and the box. In order to push it, less force is needed. When the brake […]

What does the flat part of a heating curve indicate? Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down. Just like heating curves, cooling curves have horizontal flat parts where the state changes from […]