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Posts tagged with Space

The Size of Space is Remarkable!

January3

Ultima Thule is more than a billion miles on the far side of Pluto. This snowman-like space rock is approximately twenty miles long by ten miles wide and seems to spin like a propeller through space. Why? It is two objects fused together in a strange motion. The object was discovered by the Hubble Space Telescope […]

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Back to the Future Pt2

December16

Ben Tippett, a mathematics and physics instructor at UBC’s Okanagan campus, recently published a study about the feasibility of time travel. Tippett, whose field of expertise is Einstein’s theory of general relativity, studies black holes and science fiction when he’s not teaching. Using math and physics, he has created a formula that describes a method […]

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Flat out in 3 or 4 Dimensions…

August23

How many dimensions are there in our universe? From 2009 (http://phys.org/news/2009-02-fourth-dimension.html): “Creating a unified theory of quantum gravitation is often considered to be the “Holy Grail” of modern science. Daniel Grumiller (left) from the Institute of Theoretical Physics, Vienna University of Technology, Austria, can now at least unravel some of the mysteries of quantum gravitation. […]

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Now that looks really weird!

May20

Lakes in the desert, the moon larger when it is on the horizon, Escher’s famous sketches – and, then this recent pic which somehow doesn’t quite seem right? The scale is not correct…or, is it? (For an explanation, check out the Post Support.) Optical illusions are a fun way to get connected with Spacial Geometry. […]

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More space discovered in Space

April23

Yahoo News reports that “Astronomers say they have discovered a “supervoid” in the universe that is 1.8 billion light years in width. Dr Istvan Szapudi, who led a team of researchers from the University of Hawaii, has labeled it “the largest individual structure ever identified by humanity”. The vast, large space, which is “missing” around […]

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Measurement works if you have the same units!

May23

The Mars Orbiter was lost in 1999 because the Nasa team used imperial units while a contractor used metric. The $125m probe came too close to Mars during its orbit and was probably destroyed by the planet’s atmosphere. An investigation said the “root cause” of the loss was the “failed translation of English units into […]

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Post Support

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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