Top answers

For a body of mass m orbiting a body of mass M with radius of orbit r, what is the minimum velocity that m needs in order to escape M's gravitational pull and end up infinitely far away from M?

Answer: escape velocity v = sqrt[(2GM)/r], where G is the gravitational constant. Reasoning: Conservation of energy means that the total initial energy must be equal to the total final energy, in other words...
GF
Answered by Grace F. • Physics tutor
1680 Views

evaluate some different treatments for cardiovascular disease (6)

LIFESTYLE examples of lifestyle treatment Lower blood cholesterol by cutting down on fatty foods.Stop smoking and other recreational drugs - They can affect heart rate and blood pressure, increasing the risk...
MD
Answered by Melissa D. • Biology tutor
2677 Views

How can the use of antibiotics contribute to bacteria becoming resistant?

Bacterial DNA can spontaneously mutate, which means a change in the nucleotide reading frame. By chance, a mutation may cause the bacteria to prevent being killed by the antibiotic. For example, by developin...
CW
Answered by Carolina W. • Biology tutor
3027 Views

Explain the formation of a spit and any modifications it may experience

A spit is a depositional landform that is a long, narrow beach comprising of sand or shingle, extending out from the mainland across an estuary. This landform is formed by longshore drift in the dominant win...
AG
Answered by Arushi G. • Geography tutor
9479 Views

How would I answer 'Quest-ce que tu fais pendant ton temps libre' for French GCSE?

I would say: Pendant mon temps libre, j'aime bien faire du shopping au centre commercial avec mes copains, mais desfois j'aime aussi m'amuser à la patinoire. Le weekend dernier, je suis allé au cinéma, mais ...
TM
Answered by Tom M. • French tutor
7861 Views