

Q- A bus is running along a highway at a speed of v1 =16 ms-1. A man is at a distance a = 40m from the highway and at a distance b = 196 m from the bus. In what direction should the man run to reach any point on the highway at the same time as the bus or before? The man can run at a speed of v2=4 ms-1.
Q- The fundamental frequency of an open-open tube is 1500 Hz, when it is filled with helium at 0oC. What is the frequency when it is field with air at 0oC?
Q- An object of mass m starts from rest and slides a distance d down a frictionless incline of angle θ. While sliding, it contacts an unstressed spring of negligible massand force constant k. The object slides an additional distance x as it is brought momentarily to rest by compression of the spring. Find the initial separation d between object and spring.
Q- 0.110 mol of a monatomic gas follows the process shown in the figure.
(a) How much heat energy is transferred to or from the gas during process 1 → 2 ?
(b) How much heat energy is transferred to or from the gas during process 2 → 3?
(c) What is the total change in thermal energy of the gas?