Category: Physics

What happens to the surface of the water when the rate of evaporation is greater? A substance that has a larger surface area will evaporate faster, as there are more surface molecules per unit of volume that are potentially able to escape. the higher the temperature of the substance the greater the kinetic energy of […]

At which points does destructive interference occur? Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero. What are the two main kinds of interference? […]

Which is the balanced equation for V2O5 CAS → Cao V2S5? The right answer is: V2O5 + 5CaS → 5CaO + V2S5. What type of reaction is 3mg N2? it is a combination reaction as magnesium and nitrogen combine together to form magnesium nitride . What type of reaction is sodium nitrate? When sodium nitrate […]

Is there any energy loss in interference? The field values become zero in destructive interference and there is no energy as a result- full stop. What is the meaning of interfere? intransitive verb. 1 : to enter into or take a part in the concerns of others. 2 : to interpose in a way that […]

How much gold can you keep home? CBDT has clarified the prescribed quantity of gold considered allowable. Gold within this limit will not be seized even at the time of search at the assessee’s premises. A married woman can have up to 500g of gold. An unmarried woman can have up to 250g of gold. […]

Which process is an example of chemical change? A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Is rust a chemical or physical […]

What is the device that converts electrical energy to heat energy? Generator What are the three devices that change electricity to heat energy? (1) Heater and home appliances like press iron, geyser etc, converts electrical energy into heat energy. (2) Electric bulb and rods converts heat energy to light energy. (3) A motor and robot […]

What are the causes of echo? Echoes. An echo is a sound that is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground. Although the direction of the sound changes, the echo sounds the same as […]

Why are carbon brushes used in AC generators? A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation. Why brushes are used in motor? They can either be graphite or precious metal […]

How do you find the sum of forces? The net force is the vector sum of all the forces. That is, the net force is the resultant of all the forces; it is the result of adding all the forces together as vectors. For the situation of the three forces on the force board, the […]