Question
A Bus moving at a speed of 's' km/h can pass a
stationary person in 16 seconds and a tunnel Bridge that is 240 meters long in 28 seconds. Determine the value of 's'.Solution
ATQ, Let length of Bus be ‘l’ metres According to question; So, l = 16 × s × (5/18) ------(i) And, l + 240 = 28 × s × (5/18) ---------(ii) From (i) and (ii), Or, 16 × s × (5/18) = 28 × s × (5/18)– 240 Or, 12 × s × (5/18) = 240 Or, s = 72
Which of the following materials is used for the generation of ultrasonic waves by using magnetostriction effect?
A spherical black body with a radius of 8 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated...
Which of the following vitamins are called fat-soluble vitamins?
Which one of the following determines the sharpness of image in a camera?
Which graph represents uniform motion?
What is the SI unit of power?
A body is projected upwards with an initial velocity u . At the highest point, what is its acceleration? Â
Cryogenics is a branch of Physics that deals with what?
A boy is standing in front of a plane mirror at a distance of 3 m from it. What is the distance between the boy and his image?
In which medium can sound not travel?
Relevant for Exams:
