Motion in a Straight Line — Physics STD 11 Science — Question

Can a tug of war be ever won on a frictionless surface?

What is the relation between bar and torr?

Solar pond is a device for collecting solar heat. The pond is about one metre deep, filled with saturated salt solution and protected from air current and other disturbances. When exposed to sun, the temperature at the bottom can go as high as 80°C or more. Why is this possible?

A ferry boat loaded with rocks has to pass under a bridge. The maximum height of the rocks is slightly more than the height of the bridge so that the boat just fails to pass under the bridge. Should some of the rocks be removed or some more rocks be added?

What is the shift in the colour of light when the temperature increases?

Two sitar strings A and B playing the note ‘Dha’ are slightly out of tune and produce beats of frequency 5 Hz. The tension of the string B is slightly increased and the beat frequency is found to decrease to 3 Hz. What is the original frequency of B if the frequency of A is 427 Hz ?

Why is it difficult to walk on snow or sand?

Two satellites of equal masses are orbiting at different heights. Will their moments of inertia be the same or different?

What is the angle between the equatorial plane and the orbital plane of Geostationary satel lite?