# Posts by LK

Total # Posts: 37

**history**

is anonymous really right?

**Math 8th Grade**

C C D B B

**SS**

ummm could i just get the answers?

**Social Studies**

i reallllly need the answer

**L.A.**

roman is actually right didnt think they were but got 100

**Math**

1. D 2. C 3. D 4. A 5. C 6. D 7. B 8. C 9. A 10. B

**Math**

what about the other 5?

**help**

false

**chemistry**

who created the mcilvaine buffer system?

**precal**

how do you use demoivre theorem for (-1+i)^7

**precal**

yes

**precal**

demoivre theorem (2-2i)^8

**precal**

sqrt2/2^2

**precal**

demoivre theorem (2sqrt3+2i)^5 r=(2sqrt3+2)^2

**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...

**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?

**math**

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

**statistics**

$12,553.65

**chemistry**

hghbj

**Chemistry**

lk

**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

**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

**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.

**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.

**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.

**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)

**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

**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

**geometry**

Prove line segment BP is 2/3 of line segment BD in triangle ABC

**chemistry**

ij

**Chem**

1, 3, 4

**geometry**

856

**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?

**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?

**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? )

**microeconmics**

ljljl

**Physics**

@kelly..may i know why have to l-l cos delta?

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