At B,
Potential energy = mgh = mg(h - x) [Height from the ground is (h - x)] Potential energy = mgh - mgx Kinetic energy The body covers the distance x with a velocity v. We make use of the third equation of motion to obtain velocity of the body. v 2 - u 2 = 2aS Here, u = 0, a = g and S =..
Potential energy = mgh = mg(h - x) [Height from the ground is (h - x)] Potential energy = mgh - mgx Kinetic energy The body covers the distance x with a velocity v. We make use of the third equation of motion to obtain velocity of the body. v 2 - u 2 = 2aS Here, u = 0, a = g and S =..Solution:
Mass of the body (m) = 2 kg Height (h) = 25 m Potential energy of the body = mgh 02. A bag of rice weighs 75 kg. To what height is it raised if the work done in lifting it is 4900 ..
Mass of the body (m) = 2 kg Height (h) = 25 m Potential energy of the body = mgh 02. A bag of rice weighs 75 kg. To what height is it raised if the work done in lifting it is 4900 ..Solution:
W = F x S Force acting on the object is given by F = mg [Newton's second law of motion] Mass of the object (m) = 5 kg Distance moved = 2m Therefore, Work done = F x S = 98 J 02. How much work is done, when a force of 25 N displaces an object through 10 m, in the direction of the force ap..
W = F x S Force acting on the object is given by F = mg [Newton's second law of motion] Mass of the object (m) = 5 kg Distance moved = 2m Therefore, Work done = F x S = 98 J 02. How much work is done, when a force of 25 N displaces an object through 10 m, in the direction of the force ap..Oxidation of Ethyl Alcohol by Acidified Potassium Dichromate
Alcohols on oxidation give aldehydes. The aldehydes on further oxidation give carboxylic acids..
Alcohols on oxidation give aldehydes. The aldehydes on further oxidation give carboxylic acids..Question 4
Question: Who was Gregor Mendel and what was his contribution to science? Answer: Gregor Mendel was an Austrian monk who first started the study of inheritance in an organized manner. This was the beginning of genetics and therefore, he is called the Father of Genetic..
Dependence of Gravitational Force on Mass
Dependence of Gravitational Force on Mass - According to Newton's law of gravitation, the force of attraction is directly proportional to the mass of the body. Consider two objects of mass m separated by a distance d, then the force between them is given by the relation Two Objects of Mass m Separa..
Dependence of Gravitational Force on Mass - According to Newton's law of gravitation, the force of attraction is directly proportional to the mass of the body. Consider two objects of mass m separated by a distance d, then the force between them is given by the relation Two Objects of Mass m Separa..Motion - Multiple Choice Test
Question 1 - Question: 1 km/h = _____ m/s 1. 2. 3. 4. Answer:..
Question 1 - Question: 1 km/h = _____ m/s 1. 2. 3. 4. Answer:..Question 10
Question: A body travels from A to B in 10 seconds with a speed of 50 km/h and returns with a speed of 100 km/h in 5 s. Find the average speed. Also find the average velocity for the whole journey. Answer: Distance from A to B = Speed x time = 50 km/h x 10 s Total distance from A t..
Question: A body travels from A to B in 10 seconds with a speed of 50 km/h and returns with a speed of 100 km/h in 5 s. Find the average speed. Also find the average velocity for the whole journey. Answer: Distance from A to B = Speed x time = 50 km/h x 10 s Total distance from A t..Rating of Electrical Appliances
Generally electrical appliances such as an electric bulb, geyser, heater, etc. are rated with power and voltage. A bulb rated as 100W - 250V, means that when a bulb is lit on a 250V supply, it consumes 100 W of electric power. This means that, 100 J of electrical energy gets converted into heat an..
Generally electrical appliances such as an electric bulb, geyser, heater, etc. are rated with power and voltage. A bulb rated as 100W - 250V, means that when a bulb is lit on a 250V supply, it consumes 100 W of electric power. This means that, 100 J of electrical energy gets converted into heat an..Acceleration due to Gravity on Moon
Acceleration due to Gravity on Moon - The expression for acceleration due to gravity ..
Acceleration due to Gravity on Moon - The expression for acceleration due to gravity ..See what our Users say :
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