Question

23. A hydrogen balloon is connected to the bottom of a
container car at rest by a massless string as shown
in figure. When the car starts accelerating with a
constant acceleration to right, then the balloon will shift towards​

Answer 1

Answer:

Because helium is lighter than air, a helium balloon rises. Hydrogen is another gas lighter than air; it is even lighter than helium. Hydrogen is not used in balloons and this demonstration shows why. Helium is a special gas called a Noble Gas, which means it