physics
A 83 kg person escapes from a burning building by jumping from a window 21 m above a catching net. The acceleration of gravity is 9.81 m/s 2 . Assuming that air resistance is simply a constant 92 N force on the person during the fall, determine the person’s velocity just ...
Science
lol cool!! im in connections too in 7th grade
mATH
wat is 80÷3=?
math grade 11
in a reflection the image of the line y-2x=3 is the line 2y-x=9.find the axis of reflection.
Chemistry
thanks for the help. im still a bit confused.,, [23.5g x 6.02] + [? x 2.09 x (Tfinal- 0)] + [550.g x 4.184 x (Tfinal- 28.0)] = 0 is this right so far? How would you be able to get the mass of melted ice?
Chemistry
An ice cube at 0.00 degree celsius with a mass of 23.5 g is placed into 550.0 g of water, initially at 28.0 degree celsius, in an insulated container. Assuming that no heat is lost to the surroundings, what is the temperature of the entire water sample after all the ice has me...
Chemistry
balance this equation NaOH + H2SO4 = NaSO4 + H2O
calculus
Find the intervals on which the f(x)= cos^2x is concave up and concave down.
Math
2y^2 -8y -3 = 0 please solve
Math
2y^2 -8y -3 = 0 please solve
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