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Q. Orbital Velocity for Low Earth Orbit
Neglecting air friction an object will sustain a low altitude orbit when the centrifugal force due to its motion in a circular orbit is equal to the gravitational force attracting it to earth.
Note that for these circumstances the centripetal force is provided by gravitation attracting the object toward the earth's centre. The reactive force directed absent from the earth is centrifugal.
Eddy current loss is proportional to the (A) Frequency. (B) Square of the frequency. (C) Cube of the frequency. (D) Square-root of the frequency.
The atmospheric pressure at any position is numerically similar to the weight of a column of air of unit cross-sectional area extending from that position to the top of the atmosph
What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10 3 J of thermal energy is added to each of the substances? a. ice b. Water c. Alumi
Q. What is neutral temperature? Maintain the temperature of the cold junction constant the temperature of the hot junction is gradually increased. The thermo emf increase to a
Q. What is pair production and pair annihilation? Pair production: The conversion of a photon in to an electron-positron pair on its interaction with the strong electric fie
How could you predict the spontaneity of a chemical reaction, given changes in entropy and enthalpy?
Review guide: gases: heat, temperature, volume
Can instantaneous velocity answer instantaneous speed be equal in uniform motion
Path of a projectile The apparatus below can be used to indicate the independence of the horizontal and vertical velocities of a projectile. The projectile is a metal ball, and
The angular displacement of a body is a function of time and giving by equation h=10+3t+6t square,where t is in seconds.determine the angular velocity, acceleration when t=5seconds
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