Category: Physics

What are the limitations of Einstein theory of specific heat? The correct statement is that Einstein’s law fails to account for the low temperature behavior of specific heat of solids, even qualitatively, but at high temperature it goes to the Dulong and Petit law limit, which is an accurate description of the specific heat of […]

What is the other name for contour lines? A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. What are the features of contour lines? Characteristics of Contours Must close on […]

Why is there no friction on ice? One of these theories is that friction causes the liquid layer of water to form on ice. Friction is the force that generates heat whenever two objects slide against each other. If you stand on ice without moving, no friction exists to generate heat, yet the ice is […]

What is topic sentence in English? In expository writing, a topic sentence is a sentence that summarizes the main idea of a paragraph. It is usually the first sentence in a paragraph. Also known as a focus sentence, it encapsulates or organizes an entire paragraph. What are the types of topic sentence? Type of Topic […]

What can change wave speed? The speed of a wave is only altered by alterations in the properties of the medium through which it travels. The wavelength of a wave does not affect the speed at which the wave travels. Both Wave C and Wave D travel at the same speed. How is wave speed […]

What is the reciprocal of a period? The reciprocal of the period, or the frequency f, in oscillations per second, is given by f = 1/T = ω/2π. What is cycle of a wave? A wave is a repeating pattern. It repeats itself in a periodic and regular fashion over both time and space. And […]

How do you use a microscope to focus on objects on prepared slides? Viewing Prepared Slides Start by rotating the objective lens to lowest power. Place a slide on the stage, label side up, with the coverslip centered. On LOW POWER ONLY, use the coarse focus knob to get the object into focus. If you […]

Why do things look bigger under water? The index of refraction for water is 1.33. This larger index of refraction for water means that the angle the rays of light reach your eyes is larger in water than the angle would be in the air. This increase in the angle size of light to your […]

When a substance is boiling Will the added heat increase its temperature? Adding heat, however, does not always increase the temperature. For instance, when water is boiling, adding heat does not increase its temperature. This happens at the boiling temperature of every substance that can vaporize. What are the 4 conditions which allow bacteria to […]

What are the 6 stages of the design process? Designers tend to use a six-stage process to organize their fact finding and decision making: (1) Empathy, (2) Define, (3) Ideate, (4) Prototype, (5) Test, and (6) Launch. Note, user refers to anyone who is a target of our design work. Empathy: Empathy is the foundation […]