Category: Physics

Why is the weight of an object? Weight, gravitational force of attraction on an object, caused by the presence of a massive second object, such as the Earth or Moon. Thus more massive objects, of course, weigh more in the same location; the farther an object is from the Earth, the smaller is its weight. […]

Why did Germany split into 2? As result of Potsdam Agreement by the three main winners (US, UK, USSR) on 1 August 1945; Germany was divided between the two global blocs in the East and West with the two very opposite ideologies (liberalism vs communism), one period known as the Division of Germany (1945-1990). Germany […]

How fast do waves travel? Waves coming in to shore from the open ocean have speeds that can vary from 8 to 10 miles per hour for smaller waves to up to 35 miles per hour for a tow-in-sized wave. In order to catch the wave, you must paddle in front of it with sufficient […]

Can the car make it around the curve without skidding? If the road is banked at the proper angle θ, a car can round a curve without the assistance of friction between the tires and the road and without skidding. What is the maximum speed with which a 1050 kg car? What is the maximum […]

What is tolerance in drawing? Tolerance – the total allowable variance in a dimension; the difference between the upper and lower limits ot the. difference between the upper and lower deviations. The large value on each part is the Upper Limit. The small value on each part is the Lower Limit. What is H7 tolerance? […]

What are study models? A diagnostic cast of an impression of the dental arches or a part thereof, trimmed with the arches articulated and the edges perpendicular to the occlusal plane. The study model serves as the basis for construction of dental appliances, dentures, or orthodontic treatment. See also: model. What are the examples of […]

What is the principle of hydropower? In simple words, falling water spins the water turbine. The turbine drives the alternator coupled with it and converts mechanical energy into electrical energy. This is the basic “working principle of hydroelectric power plant.” What are the advantages and disadvantages of hydropower plant? Advantages of Hydroelectricity: It is a […]

What is the formula of potential energy in SHM? Equations Equation Symbol breakdown Meaning in words K = 1 2 m v 2 K = \dfrac{1}{2} mv^2 K=21mv2 K K K is translational kinetic energy, m is mass, and v is the speed. Translational kinetic energy is directly proportional to mass and the square of […]

Is density affected by mass? Density is the amount of mass located in a specific volume. The density of an object can change if either the mass or volume of the object is changed. If an object is more dense than water, it will sink; if it is less dense than water, it will float. […]

What does cereal mean? A cereal is any grass cultivated (grown) for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, germ, and bran. In some developing countries, grain in the form of rice, wheat, millet, or maize constitutes a majority of daily sustenance. How do […]