Question
Which gas law states that the pressure of a gas varies
directly with temperature when mass and volume remain constant?Solution
Gay-Lussac’s Law states that for a fixed mass and constant volume, the pressure of a gas is directly proportional to its absolute temperature. As temperature increases, gas molecules collide more vigorously, resulting in higher pressure.
- A soldier hears the sound of a cannon that was fired 3 km away after 30 seconds. Calculate the speed of sound.
The speed of ‘A’ and ‘B’ is 30 km/hr and 12 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ hours is 360 km more than that by...
The speed of a car is 30% more than that of a bike. Both of them start from a same point. After travelling for 4 hours, the speed of the bike is increas...
A swimmer swims from point X upstream for 4 minutes. Then he turns and swims downstream for 4 minutes and reaches point Y. If the distance between X and...
Raman traveled a certain distance at a particular speed. If he had traveled 6 km/h faster, he would have taken 30 minutes less. If he had traveled 5 km/...
A train running at the speed of 35 metre per second crosses a bridge in 30 seconds. Another which is 130 metre shorter than the previous train crosses t...
- Two runners, ‘M’ and ‘N’, started from opposite ends of a track towards each other at the same time. When they met after 3 hours, runner ‘N’ ha...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 15 km/hr and 10 km/hr, respectively. If the di...
Sheetal rides a bike at an average speed of 40 kmph and reaches her destination in 5 hours. Hemlata covers the same distance in 4 hrs. If Sheetal increa...
A car travels 120 km at a speed of 40 km/h and then 180 km at a speed of 60 km/h. Find the total time taken and the average speed for the whole journey.
Relevant for Exams:
