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A satellite is in a stationary orbit above a planet of mass 8.9 x 10^25 kg and period of rotation 1.2 x 10^5 s. Calculate the radius of the satellite's orbit from the centre of the planet.

A body in a stationary orbit will always remain above the same point on the planet as it orbits. For a body to be in such an orbit, it must rotate around the planet in the same direction as the spin of...

Answered by Dorian A. Physics tutor
3307 Views

Describe the photoelectric effect.

If we give a peice of gold negative charge and shine long wave, low frequency, electro-magnetic (E-M) radiation on it (for example radio waves) absolutely nothing will happen.

If you star...

Answered by Umar S. Physics tutor
3666 Views

Which state can a substance NOT be in if heat transfer through convection is occurring?

Solid.

Answered by Calum M. Physics tutor
2950 Views

Describe the photoelectric effect.

The photoelectric effect is a phenomenom which occurs when photons strike a metal causing electrons to be released from the metal atoms. This occurs because the photons transfer their energy to the ele...

Answered by Iman W. Physics tutor
3277 Views

A car is travelling at 10m/s when it brakes and decelerates at 2ms^-2 to a stop. How long does the car take to stop?

This is a question testing the knowledge of the equations of constant acceleration (Suvat equations)First convert the question into a standard form. For example by writing out the variables as follows s (...

Answered by Kirill M. Physics tutor
7190 Views

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