The escape velocity of an atmospheric particle which is 1000 km above the earth's surface, is (radius of the earth is 6400 km and g=9.8 m/s2) Q. The escape velocity from an altitude equal to radius of the Earth above Earth's surface is: ( Escape velocity from surface of the Earth is 11.2 kms −1 ) Q.

Low-Earth orbit (often known as LEO) encompasses Earth-centered orbits with an altitude of 2,000 km (1,200 mi) or less. For the purposes of the Commercial Use Policy, low-Earth orbit is considered the area in Earth orbit near enough to Earth for convenient transportation, communication, observation and resupply.

The angular velocity is related to the component of \(\vec v\), \(v_\perp\), that is perpendicular to \(\vec r\) (which is the component tangent to the circle of radius \(r\), in Figure \(\PageIndex{5}\)): \[||\vec w || =\frac{1}{r^{2}}||\vec r\times \vec v || = \frac{v\sin φ}{r}=\frac{v\perp}{r}\]

In physics, angular frequency "ω" (also referred to by the terms angular speed and angular rate) is a scalar measure of the angular displacement per unit time (for example, in rotation) or the rate of change of the phase of a sinusoidal waveform (for example, in oscillations and waves), or as the rate of change of the argument of the sine function.

A boat takes 19 h for travelling downstream from point A to point B and coming back to a point C midway between A and B. If the velocity of the stream is 4 km/h and the speed of the boat in still water is 14 km/h, what is the distance between A and B?

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Science Physics A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60 m. Find (a) its speed just before it strikes the ground and (b) how long it takes for the ball to reach the ground. Repeat (a) and (b) for the ball thrown directly up from the same height and with the same initial speed. Take g = 10 m/s².

Answer: The average velocity of a body becomes zero when its displacement is zero. I hope it's help you. please make me brainliests

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We can define drift velocity as the velocity acquired by electrons or other charge carriers when an external electric field is applied to a conductor. When no external potential difference or electric field is applied, an electron inside a conductor can have any velocity due to thermal energy inside the conductor and they move around in random.

This concept is crucial for Class 12 Physics and competitive exams like NEET and JEE. It includes detailed explanations, formulae, units, dimensions, derivation and solved examples tailored to your exam preparation needs. Drift Velocity in Conductors Free Electrons in Conductors

The relation between current and drift velocity is, I = neAvd where, n refers to the number of free electrons per unit volume, e is the charge of an electron, A is the planar area located inside the conductor. Related Questions Read More: CBSE CLASS XII Related Questions 1.