QUESTION: A vessel contains a mixture of nitrogen () and carbon dioxide () at a temperature and pressure . Find the density of this mixture, assuming the gases to be ideal. To solve this problem, you must have an idea of the ideal gas law. SOLUTION: Let: is the number of moles of the mixture, […]
I.E. Irodov: Question Number 2.4 Read More »
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:
I.E. Irodov: Question Number 1.1 Read More »
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
I.E. Irodov: Question Number 3.1 Read More »
QUESTION: A solid cylindrical pulley with a mass of and radius of is free to rotate about its axis. A block of mass is attached to the pulley with a light string. Assume the string does not stretch or slip. Calculate (a) the tension in the string and (b) the angular acceleration of the pulley.
Rotational Mechanics. Question Number: 2 Read More »
QUESTION: A uniform solid sphere of radius starts rolling down without slipping from the top of another fixed sphere of radius . Find the angular velocity of the sphere of radius at the instant when it leaves contact with the surface of the fixed sphere. Please Click Here for the concept behind this problem. SOLUTION:
Rotational Mechanics. Question Number: 1 Read More »
QUESTION: A physical pendulum consists of long sticks joined together as shown in the figure. What is the pendulum’s period of oscillation about the midpoint of the horizontal stick? Please Click Here for the concept behind this problem. SOLUTION: Given: The length of the stick is . Let: Mass of the stick is So, the
Oscillations And Waves. Question Number: 1 Read More »
QUESTION: A charge is uniformly distributed on a ring of radius A sphere of radius is constructed with its center on the circumference of the ring as shown in the figure. Find the electric flux through the sphere. Please Click Here for the concept behind this problem. SOLUTION: Given: The charge on the ring is
Electric Flux and Gauss Law. Question Number: 3 Read More »
