Top answers


What is a coordinate?

It is a point on a graph described by its numerical values. For example (2,3) would be 2 along the x-axis and 3 along the y-axis.
ES
Answered by Edward S. • Maths tutor
4431 Views

What at the alkali metals?

These are the group one elements on the periodic table. They are highly reactive so are stored under oil. When they react with water it is often a violent reaction. It also turns to water alkaline, hence why...
ES
Answered by Edward S. • Chemistry tutor
4806 Views

Why do we use the imperfect tense?

Imperfect can be descriptive, refers to a repeated event, or one that continued over a long period of time, or was interrupted by another event. For example: "Je mangeais dans le café quand j'ai vu Phil...
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Answered by Jennifer M. • French tutor
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What does Pythagoras's theorem state?

It states that for a right-angle triangle, the square of the hypotenuse equals the sum of the squares of the other sides. So if a denotes the hypotenuse, a^2 = b^2 + c^2.
RV
Answered by Rohan V. • Maths tutor
5304 Views

For a vehicule with a constant acceleration (5 m/s^2) starting at rest, how long would it take to travel 1 km?

as the acceleration is constant, to travel 1km=1000m, we use 1000 m =(1/2) (5 m/s^2) t^2, so t=sqrt(2 1000/5)=20 seconds
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Answered by David R. • Physics tutor
2824 Views