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On the surface of the Earth, the escape velocity is about 11.2 kilometers per second 06.96 mi/s), which is approximately 34 times the speed of sound (Mach 34) and several times the muzzle velocity of a rifle bullet (up to 1.7 km/s). However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s. In physics, escape velocity is the speed at which the kinetic energy plus the gravitational potential energy of an object is zero.
An ant can see objects all around it due to the presence of which type of eyes?
Which of the following statement is correct?
I. The incident ray, the normal at the point of incidence and the reflected ray all lie in the sa...
Compared to fresh Water, the freezing point of sea water is -
What is the unit of electric current?
What is the SI unit of pressure?
The point where the total mass of a body is considered to be concentrated is known as what?
The term ‘Isoneph' indicates the lines of equal –
An electric bulb is rated 100 W and 220 V. What is the current through the bulb?
When water is heated from 0°C to 10°C. Its volume
Focal length of a concave lens with power –2 D:
