Is it possible that velocity of an object is zero but its acceleration is non zero if yes then give an example? 1. When we start a car from rest initial velocity is zero but acceleration is not. 2. When we throw a ball vertically upwards, at max height velocity is zero but acceleration due […]
What does C stand for in dates?
What does C stand for in dates? Often dates will be preceded with a “c.” or a “ca.” These are abbreviations of the Latin word “circa” which means around, or approximately. We use this before a date to indicate that we do not know exactly when something happened, so c. 400 B.C.E. means approximately 400 […]
What is the change in kinetic energy of a charged particle when it moves in a magnetic field?
What is the change in kinetic energy of a charged particle when it moves in a magnetic field? work done =FScos90∘=0. This means that a uniform magnetic field can do no work on charged particle although it can change its direction of motion. Hence the kinetic energy of charged particle in a magnetic field remains […]
Can Mass ever be zero?
What is the most important position in rowing?
What is the most important position in rowing? It is common practice among crews to put the most technically proficient rowers at the bow and stern and the physically strongest and heaviest rowers in the centre. What is the most important seat in rowing? Stroke seat is the most important seat in the eight. That […]
Which diseases are respiratory infections?
Which diseases are respiratory infections? The Top 8 Respiratory Illnesses and Diseases Asthma. Chronic Obstructive Pulmonary Disease (COPD) Chronic Bronchitis. Emphysema. Lung Cancer. Cystic Fibrosis/Bronchiectasis. Pneumonia. Pleural Effusion. What is a common respiratory virus? The respiratory viruses that most commonly circulate in all continents as endemic or epidemic agents are influenza virus, respiratory syncytial virus, […]
How deep can light travel underwater?
How deep can light travel underwater? Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet). The ocean is divided into three zones based on depth and light level. What can light not penetrate? Translucent […]
How does the brain send signals to muscles?
How does the brain send signals to muscles? Muscles move on commands from the brain. Single nerve cells in the spinal cord, called motor neurons, are the only way the brain connects to muscles. When a motor neuron inside the spinal cord fires, an impulse goes out from it to the muscles on a long, […]
What causes the formation of a spiral galaxy?
What causes the formation of a spiral galaxy? Spirals exist only among flattened or ‘disk’ galaxies. These galaxies are differentially rotating–that is, the time to complete a full rotation increases with distance from the center. Differential rotation causes any disturbance in the disk to wind up into a spiral form. Does the Milky Way have […]
Which of the following is the strongest reducing agent?
Which of the following is the strongest reducing agent? In an aqueous medium, Li is the strongest reducing agent because the high negative enthalpy of hydration compensates for the high ionisation energy. What do you mean by oxidation and reduction? Oxidation and reduction in terms of oxygen transfer The terms oxidation and reduction can be […]