Category: Physics

How can we prevent radiation from gadgets? 10 ways to avoid radiation from your gadgets Never carry cellphones on your body. Cellphone manuals say it should be kept at least an inch from your body. Keep your distance when you talk. Toggle data on and off. Calls are out, messaging is in. Cut the cordless. […]

Is water chemical energy? Water, like many substances, contains two kinds of energy. The first kind of energy is called kinetic energy. This is energy that is used during the execution of processes, such as movement. Because of kinetic energy water can flow and waves can exist. What form is energy stored in the human […]

What is the Joule equal to? One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) mass. Therefore, one […]

How do you find boiling point with temperature and pressure? If the boiling point values for a specified substance at a specified BP temperature and pressure are given, one can determine the Boiling Point at different vapor pressure values using the Clausis-Clapeyron Equation. The Clausis-Clapeyron Equation is derived from VP2=VP1e−ΔHvRT at two different temperatures. What […]

Is the parking brake a separate braking system? A parking brake controls the rear brakes and is a completely separate device from your vehicle’s regular hydraulic brakes. It is in charge of keeping a parked vehicle stationary; it will prevent the car from rolling down a hill or moving. Which wheel does the parking brake […]

Can a bulb added in a circuit with twisted wires light up? Answer. Answer: Yes,because it is still a complete circuit. What must be true for a circuit to light a bulb? Based on what you have seen, what must be true for a circuit to light a bulb? There has to be a lightbulb […]

What happens if a plane is too heavy? If the plane is too heavily loaded, then you will be unable to take off. (You might be able to get a meter or two above the ground due to a phenomenon called “ground effect”, but you could not climb any higher.) Is basic weight the same […]

How do you convert a smaller unit to a larger unit? To convert a smaller unit to a larger unit (eg to ), divide it by the number of smaller units which are needed to make. To convert from a larger unit to a smaller one, multiply. To convert from a smaller unit to a […]

Does protist have DNA? Characteristics of Protists. Like all other eukaryotes, protists have a nucleus containing their DNA. They also have other membrane-bound organelles, such as mitochondria and the endoplasmic reticulum. Most protists are single-celled. Is fungi plant or animal? Fungi are not plants. Living things are organized for study into large, basic groups called […]

What is the difference between the chemical name and chemical formula? Chemical symbols refer to chemical elements only. They do not necessarily refer to atoms of that element, but also to ions. Chemical formulas refer to compounds and, specifically, the ratios in which it is made up by different chemical elements. What is the chemical […]