Friday
May 24, 2013

# Posts by joe

Total # Posts: 1808

physics
From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a frequency that is 0.86 times as small as that emitted by the car when it is stationary. The speed of sound is 343 m/s. what is the speed of the car?

math
a particle starts at time t = 0 and moves along the x - axis so that its position at any time t is greater than or equal to zero is given x(t) = (t-1)^3(2t-3) A. Find the velocity of the particle at any time t greater than or equal to 0. B. For what values of t is the velocity...

Math
What is another way to write the expression 44n? 44÷n?

Pre-Algebra
A bag contains 10 white golf balls and 6 striped golf balls. A golfer wants to add 112 golf balls to the bag. He wants the ratio of white to striped golf balls to remain the same. How many of each should he add?

math
Write four million, four thousand, forty in standard form.

math
Order the following numbers from greatest to least. 2.071; 20.071; 20.71 Is this right 20.71; 20.071; 2.071

Math
Without multiply how many decimals places r in the product of 4.97 and 3.456?

math
Isn't 19 + 21 + 40 which is more than the amount of children in the class? Then you add 10 more that don't play it's 50. So how is the class total 38 as implied?

math
rene gave each of six people 1/10 of a veggie pizza. rene has 2/5 of the pizza left. explain how this is true

science
How much total work is done by 450-N girl who lifts a 52-N backpack 1.2m to her shoulders and then climbs a ladder 3.0m high?

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