Recent content by carltonblues

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    High School Pushing or Pulling a Snow Sled - Pros and Cons

    Would it be easier to push or pull a snow sleigh? (no rope!)
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    What Values of x Make Matrix B Singular?

    Figured it out. Just got the determinent and used quadratic equation to see when x=9 and x=-4, the matrix is singular
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    What Values of x Make Matrix B Singular?

    Determine all values for x for which the matrix B = | x 3 -1| |9/2 x 3| | -2 1 1| No idea where to start. Any help?
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    Calculating Anne's Final Mark with Matrix Equations

    Anne is a maths student. She has achieved marks of 9 outof 10 for tutorials and 17 out of 25 for her mid semester esam. There are two options for calculation of her final mark. Both options give Annie a final mark of exactly 72%. F=(t + a + 0.75e) F=(t + a + m + 0.5e) a) Let a be Anne's...
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    Finding the determinent or the identity of the matrix?

    Muchly appreciated man. Thank you :!)
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    Finding the determinent or the identity of the matrix?

    Thanks for the help. I get: 2b-25 0 a-9 5b-65 1 2a-18 0 0 a-8 So does that mean b= 13 and a=9 if you want the diagonals to be 1? Thanks,
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    Finding the determinent or the identity of the matrix?

    I got the product of CD to be: 13 0 a-9 -35 1 2a-18 0 0 a-8 I multiplied that by I and got the same number. What do I do now? Cheers
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    Finding the determinent or the identity of the matrix?

    I have the following problem: Let C= | 1 2 3 | | 2 5 3 | | 1 0 8 | and D = | -40 16 a | | b -5 -3 | | 5 -2 -1 | Determine the values of and and b such that D = C^-1 Do i start off by finding the determinent or the...
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    How Does Friction Affect a Hockey Puck's Acceleration and Distance on Ice?

    I thought the mass was irrelevant?
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    How Fast and How Long Does a Pebble Travel in a Projectile Experiment?

    life saver!
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    How Fast and How Long Does a Pebble Travel in a Projectile Experiment?

    God I hate projectiles.. A PHYS1001 student uses a slingshot to project a pebble at her lecturer (shoulder height) who is standing 40 m away. After extensive experiments she finds that to hit the target she must aim 4.85 m above the target. Determine the velocity of the pebble on leaving...
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    What is the time when the ball is 15 m above the ground?

    Cheers mate
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    What is the time when the ball is 15 m above the ground?

    1)A ball is thrown upward with an initial velocity of v = 20 m/s. How long is the ball in the air? What is the greatest height of the ball? When is the ball 15 m above the ground? 1) I have figured out t total = 4.08s greatest height = 20.4m For the last bit (Finding the time when...
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    What is the velocity of the boat relative to the water

    If the current is in the sotherly direction, then why does the boat go off course so much when they reverse the co-ordinates?
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    What is the velocity of the boat relative to the water

    Bernie is showing Margaret his new boat and its auto-navigation feature, of which he is particularly proud. "The island is 1 km east and 3 km north of this dock. So I just punch the numbers like this, and we get ourselves refreshment and enjoy the scenery." 45 min later, they find themselves...