Saturday
May 25, 2013

# Posts by kristin

Total # Posts: 156

trig
find the coordinates of the terminal point on the unit circle determined by t=9pt/7 to two decimal places

Physics
The position vector r of a particle moving in an xy plane is given by [r = (6t^3-3t)i + (4-1t^4)j] with r in meters and t in seconds. What is the angle between the positive direction of the x axis and a line tangent to the particle's path at t = 3 s? Give your answer in th...

Math
To subtract 91 from 99, do you need to regroup? Explain

Math
To subtract 91 from 99, do you need to regroup? Explain

3rd math
Bethany has 40 apples. Write a subtraction story about the apples that would require regrouping. Then write the answer in a complete sentence.

physics
a rocket blasts off and moves up with an acceleration of 12 m/s2 until it reaches 30 m then the engine shuts down and the rocket continues in free fall. What is the max hieght of the rocket and what is the total duration of the rockets flight?

chemistry
When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form?

grammar
A Superblade was used at the 2 o'clock position, and the anterior chamber was entered was used is a verb ,was entered is also a verb ,am i right

Thermodynamics
An intrepid explorer takes 400 g of ice from the cold Siberian environment, where the temperature is –40 degrees and places it in a kettle inside his mobile laboratory. The ice melts and he heats the water to +40 degrees. What is the total amount of heat absorbed by the e...

algebra
simplify and write using only positive exponents. thanks. (2x^3y^4)^-2 divided by (8xy^6)^-3

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