Wednesday
May 4, 2016

# Posts by LK

Total # Posts: 29

chemistry
who created the mcilvaine buffer system?
March 27, 2015

precal
how do you use demoivre theorem for (-1+i)^7
March 15, 2015

precal
demoivre theorem (2-2i)^8
March 15, 2015

precal
sqrt2/2^2
March 15, 2015

precal
demoivre theorem (2sqrt3+2i)^5 r=(2sqrt3+2)^2
March 15, 2015

ap chemistry
how do you find the mass of dehydrated sample? mass of crucible and cover- 30.95 g mass of hydrated sample, crucible, and cover- 32.75 g mass of hydrated sample-? mass of dehydrated sample, crucible and cover- 1st weighing-32.47 g mass of dehydrated sample, crucible, and cover...
January 12, 2015

math
In a random sample of 75 individuals, it was found that 52 of them prefer coffee to tea. What is the margin of error for the true proportion of all individuals who prefer coffee?
May 28, 2014

math
has a vertex of (0,2) and points (1,8)find a,b,c
December 6, 2013

statistics
\$12,553.65
April 23, 2013

PHYSICS(URGENT)
A particle has a mass of 5kg. It is held at a height of 3 metres above the ground. Find: a.Its potential energy b.It’s kinetic energy when is hits the ground c.The speed with which the particle hits the ground
March 22, 2012

PHYSICS(URGENT)
A body of mass 0.5 kg is thrown vertically upwards with a speed of 10 m/s. Determine: a.The initial kinetic energy of the body b.The gain in potential energy when the body has reached its maximum height c.The maximum height reached above the starting position
March 22, 2012

PHYSICS
A car is moving at a constant velocity of 5.5m/s. How much net force is required to raise its velocity to 14 m/s in 30 seconds? Suppose the car has a mass of 150kg.
February 27, 2012

PHYSICS
A car is moving at a constant velocity of 5.5m/s. How much net force is required to raise its velocity to 14 m/s in 30 seconds? Suppose the car has a mass of 150kg.
February 27, 2012

PHYSICS
A car is moving at a constant velocity of 5.5m/s. How much net force is required to raise its velocity to 14 m/s in 30 seconds? Suppose the car has a mass of 150kg.
February 27, 2012

PHYSICS
If your mass on earth is 70 kg what will be your mass on the moon considering that the gravitational field strength on the moon (g) is 1/6 of that on the earth. (g on earth = 10N/kg)
February 27, 2012

physics
A car accelerates from rest at a steady rate of 1 ms-2. Calculate: (a) the time taken to reach 15 ms-1 (b) the distance travelled during this time (c) the velocity of the car when it was 100 m from the start point
February 8, 2012

physics
A car accelerates from rest at a steady rate of 1 ms-2. Calculate: (a) the time taken to reach 15 ms-1 (b) the distance travelled during this time (c) the velocity of the car when it was 100 m from the start point
February 8, 2012

geometry
Prove line segment BP is 2/3 of line segment BD in triangle ABC
February 8, 2011

Chem
1, 3, 4
October 26, 2010

Physics
If a ball has a constant acceleration of 10m/s^2, how fast will the ball be rolling after 4 seconds? Would you multiply acceleration times time? So 10 x 4... or would you use the equation d=1/2gt^2?
May 29, 2010

Physics
A 3.8 kg fish swimming 1.3 m/s swallows an absent minded 1.4 kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch. What is the velocity v of the smaller fish before lunch?
May 27, 2010

Physics
A railroad diesel engine weighs 3.6 times as much as a freightcar. If the diesel engine coasts at 4.3 km/h into a freightcar that is initially at rest, how fast do the two coast after they couple together? )
May 27, 2010

Physics
@kelly..may i know why have to l-l cos delta?
March 29, 2010

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