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Q. What is microwave oven? How it works?
Microwave oven It is utilized to cook the food in a short time. When the oven is manage the microwaves are generated which in turn produce a non-uniform oscillating electric field. The water molecules in the food that are the electric dipoles are excited by an oscillating torque. Therefore few bonds in the water molecules are broken and heat energy is produced. This is utilized to cook food.
What is the speed of a 232 kg satellite in an approximately circular orbit 645 km above the surface of Earth?
1. What is the principle of gas filled detectors? 2. What are nuclear radiations or particle detectors?
Explain General Theory of Gravitation The idea of a gravitational field takes all the gravitational effects of a given mass like Earth and expresses them mathematically as a grav
Q. What's the way of the force if exerted on charged particle? Described below is a positively charged particle in a rightward-directed electric field. The particle has a veloc
What are intrinsic and extrinsic semiconductors? A semiconductor is a material that has an electrical conductivity among that of a conductor and an insulator. In a semiconducto
si el numero atomico del sodio es 11 y su numero de masa es 22,diga¿cuantos electrones,protones y neutrones respectivamente,tiene su atomo neutro?
1. An ionization chamber is used on Tuesday (T=22°C, P=760mmHg) and then on Wednesday (T=25°C, P=740 mmHg) to monitor the output from an x-ray tube. If the output from the tube is
Introduction and Definition: The force between two particles was studied by Coulomb in 1785. He stated that the force of attraction or repulsion between two charged particle
IN PHYSICS B OCR THE POTENTIAL DIVIDER AND CALCULATION ON LENS ARE TRICKY. HOW DO I APPROACH AND UNDERSTAND QUESTIONS?
Translational : If a body goes such that its orientation does not change with respect to time then body is said to move in translational motion. ROTATION : If an object is rota
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