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What is the minimum initial velocity necessary for an object to leave Earth?

The problem can be easily solved using energy formulas. The only force that acts on the departing object is the gravitational force, which is conservative. Therefore the total energy is conserved on the traj...
LS
Answered by Leontica S. • Physics tutor
2586 Views

A charged particle in a cyclotron moves in a circle with radius 5mm. If the field in the cyclotron is 0.06 T and the velocity of the particle is 2.4x10^7, what is the charge-mass ratio of the particle?

Firstly, we should equate the centripetal force to the force on a moving charge using equations from our formula booklet: (force on a moving charge): F = Bqv(centripetal force): F = mv 2 /rmv 2 /r = Bqvwhen ...
PV
Answered by Preshayla V. • Physics tutor
2715 Views

Compare and contrast geostationary and low polar orbits.

Geostationary orbits are only possible at one distance from Earth. This is because the very nature of the geostationary orbit requires the satellite to have the same time period as the rotational period of t...
TH
Answered by Tesni H. • Physics tutor
9817 Views

Give three properties that are the same for radio waves and microwaves

They travel at the same speed through air.They travel at the same speed through a vacuum.They are both transverse waves. Other answers that are accepted: they can be reflected, refracted, diffracted, and abs...
EW
Answered by Ellie W. • Physics tutor
15401 Views

Why does a feather fall at the same rate as a hammer on the Moon?

To calculate an object's weight, we have weight = mass * gravitational field strength (W = mg). From this, we see that an object with a greater mass (e.g. a hammer compared with a feather) has a greater weig...
JT
Answered by Joel T. • Physics tutor
10540 Views