Category: Physics

When light hits a smooth shiny surface the light? Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection. Light reflects from a smooth surface at […]

What are 2 advantages to using free weights? 8 Benefits of Doing Free Weights Exercises They’re functional. They’re super-efficient. They improve your balance. They torch serious calories. They make you so much stronger. They fit in your closet. They reduce your risk of injury. There are no limits. What are 3 disadvantages of using free […]

Why do pro bowlers use two hands? The DeSales senior switched from the traditional one-handed style to bowling with two hands for two reasons: power and control. “I throw it slower, per se, but it has a lot more power on it,” Swift said. “There are a lot more (revolutions) on the ball and it […]

What are the three components of research? research utilizes certain instruments and materials and involves a number of, participants, methods and techniques. All of them are called the research components. of research. This module aims to achieve that objective. literature review, method, results, discussion and conclusion. What is the most important part of a report? […]

What is interspecific crossing? An interspecific hybrid is a cross between plants in two different species. Many times they will be from the same genus, but not always. In animals, hybridization often results in sterility or low fertility, but this is less often the case with plants. What is the example of interspecific hybridization? Crossing […]

How do you calculate projectile? Projectile motion equations Horizontal velocity component: Vx = V * cos(α) Vertical velocity component: Vy = V * sin(α) Time of flight: t = 2 * Vy / g. Range of the projectile: R = 2 * Vx * Vy / g. Maximum height: hmax = Vy² / (2 * […]

What is the difference between natural and forced convection? The key difference between natural and forced convection is that in natural convection, the motion of the fluid is influenced by natural means whereas, in forced convection, the motion of fluids is influenced by external means. What is meant by natural convection? Natural convection is a […]

What are the two mechanisms by which metal deforms? The mechanism by which metals deform is via the motion of linear defects at the atomistic scale, called dislocations (see the figure). In metals, dislocations are usually mobile, and their motion provides for the irreversible shifting of atomic planes in a process called slip, resulting in […]

Why should the number of classes in frequency distribution be between 5 and 20? Why should the number of classes in a frequency distribution be between 5 and 20? If the number of classes in a frequency is not between 5 and 20, it may be difficult to detect any pattern. Organizing the data into […]

What does the commutator do in an electric motor? On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils. What are the […]