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Give two features of polar orbits. Suggest the use of a satellite in a polar orbit.

-They have a period of 24 hours -They lie above the equator A satellite in a polar orbit could be used for various things such as weather forecasting, GPS, to provide network services such as internet and mo...
ZM
Answered by Zahra M. • Physics tutor
7489 Views

t=−3 , find t^2−2t−1

we need to substitute the value of 't' in the equation. we are given the value of 't'. it is equal to 3. Now, substitutting 3 in the place of 't' within the equation gives: (3)^2 - 2(3) - 1 = (3 x 3) - (2 x ...
DP
Answered by Dhwani P. • Economics tutor
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Explain the law of demand with the help of a diagram.

Demand can be defined as the willingness and ability of a consumer to purchase a good or service.The law of demand states that the quantity demanded of a good or service increases as its price decreases and ...
DP
Answered by Dhwani P. • Economics tutor
11962 Views

Describe ways in which the body prevents entry of microorganisms

The first line of defence is the skin. This forms a physical barrier that prevents any microorganisms from getting into the body. Acid in the stomach, due to the low pH, is another defence the body has. This...
AC
Answered by Adrian C. • Biology tutor
18357 Views

How does this person describe his experience? "Durante los Juegos Olímpicos del 2012 los turistas gastaron dinero en la capital. Esto ayudó la economía de Inglaterra y me alegró mucho."

This question is taken from a 2016 GCSE past paper. In language exams there are lots of reading comprehension questions. For this question in an exam, there would be lots of different people's viewpoints and...
RL
Answered by Rosanna L. • Spanish tutor
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