Friday
December 13, 2013

# Posts by Ellen

Total # Posts: 174

Thanks alot-I really appreciate it Ms. Sue

Él no va nunca.He never goes Él ve alguien.He sees someone. Él no ve nadie.He doesn’t see anyone.

Physics
Consider a frictionless track as shown in the figure below. A block of mass m1 = 5.75 kg is released from A. It makes a head on elastic collision at B with a block of mass m2 = 8.00 kg that is initially at rest. Calculate the maximum height to which m1 rises after the collisio...

uncc
the half-life of 234U, uranium-234, is 2.52 x 10^5yr. If 98.5% of thee uranium in the original sample is present, what length of time (to the nearest thousand years) has elasped

Chemistry
Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 4.5 x 10-8 Can someone explain the steps to do this please?

physics
A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

physics
A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

calculus
find all points at which the tangent line to the graph of y=x3 is parallel to the line y=27x+5

Physics
Two objects attract each other gravitationally with a force of 2.9 10-10 N when they are 0.29 m apart. Their total mass is 4.0 kg. Find their individual masses.

science
One of the characters Mendel studied was the position of the flowers. He crossed plants that had flowers at the tips of the stems with plants that had flowers along the sides. He allowed the F1 plants, which had flowers along the sides, to self-fertilize. In the F2 generation,...

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