QUESTION: A vessel of volume contains a mixture of hydrogen and helium at a temperature and pressure . The mass of the mixture is equal to . Find the ratio of the mass of hydrogen to that of helium in the given mixture. To solve this problem, you must have an idea of the ideal […]
I.E. Irodov: Question Number 2.3 Read More »
QUESTION: Two identical vessels are connected by a tube with a valve letting the gas pass from one vessel into the other if the pressure difference . Initially, there was a vacuum in one vessel while the other contained ideal gas at a temperature and pressure . Then both vessels were heated to a temperature
I.E. Irodov: Question Number 2.2 Read More »
QUESTION: A vessel of volume contains ideal gas at the temperature . After a portion of the gas has been let out, the pressure in the vessel decreased by (the temperature remaining constant). Find the mass of the released gas. The gas density under the normal conditions . To solve this problem, you must have
I.E. Irodov: Question Number 2.1 Read More »
QUESTION: A motorboat going downstream overcame a raft at a point ; later it turned back and after some time passed the raft at a distance from the point A. Find the flow velocity assuming the duty of the engine to be constant. To solve this problem, you must have an idea of Kinematics. SOLUTION:
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QUESTION: Calculate the ratio of the electrostatic to gravitational interaction forces between two electrons, between two protons. At what value of the specific charge of a particle would these forces become equal (in their absolute values) in the case of interaction of identical particle. To solve this problem, you must have an idea of Coulomb’s
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Where did everything come from? What is our history? In this post, you can get the complete history of our existence. Here, you can find the complete story of the Universe starting from the Big Bang, the formation of stars, and planets, life evolving on Earth, and many more. So, let’s get started. Image Credit:
A Complete History of the Universe (From the Big Bang to Present Day) Read More »
Instantaneous Speed It is the speed of a particle at any instant of time, . If is the distance traveled by the particle in a very small time, , then the instantaneous speed of the particle at that time is given by; That is, it is the rate of change of the distance with respect
Instantaneous Speed, Instantaneous Velocity, and Instantaneous Acceleration Read More »
Activity Suppose you have a gun in your hand and you are going to shoot at a big wooden block (as shown in the animation below). https://eduvigyan.com/wp-content/uploads/2022/03/Activity_eqn-of-kinematics_1_com.mp4 You notice that either the bullet comes out of the block or it fully stopped inside it. It means that the speed of the bullet is continuously decreasing
Equations of Kinematics for a Linear Motion Read More »
When a Golf player hits a Golf ball, a baseball player hits a baseball or a tennis player hits a tennis ball then you can notice that the motion of these balls are of the same kind and it is called a Projectile motion. What is Projectile Motion? When you throw an object at an
When you sit on a moving train and you are looking outside from the window of your train then you see that everything is speeding except your train. And if suddenly another train which is coming from the opposite direction crosses you then the velocity of another train appears to be quite larger than it
