Bart

A 0.225 kg croquet ball makes an elastic head-on collision with a second ball initial at rest. The second ball moves off with half the original speed of the first ball. What is the mass of the second ball? Could someone please explain this to me?

A diver with a mass of 30 kg is on a platform, h, distance from the surface of the water. When jumped off, he hit the water and went 5 m underwater. What is the distance between the platform from which he jumped from and the water's surface if the water has a resistance force of 10 N.

The answer I got was 4.830 meters, but that didn't seem right. Could someone show me how to do it step by step?

I recently updated my OS from 2.40 to 2.53 and I want to change it back. Anyone know how I could do that?

How would you find the zeros of x^3-2x^2+24x+5. The answers are: x ≈ -2.34, 0.57, 3.77. If you could explain step-by-step, it would be greatly appreciated.

Write a polynomial with function of minimum degree in standard form with real coefficients whose zeros include -3,4, and 2-i.

I know the equation starts out:

(x+3)(x-4) [x- (2-i) ] [x - (2+i)]

But when i try to foil [x-(2-i)][x-(2+i)] I get confused and end up with x^2-4x-2ix-5 when really i should be getting x^2-4x+5.

Can someone please explain to me preferably step-by-step on how to do this problem?

What is the symmetry of f(x) = x? Would that line have any symmetry or not? Also what would be the symmetry of f(x) = (4/x)?

1-(x-2)² - 0

What is x equal to? they said to try to do this with a calculator but my answers are completely off then what the calculator's graph is telling me.

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well we are trying to solve for variables in chemistry but its algebraic equations in a way. i was just wondering if sin Φ (not the exact symbol) is one term or two? as in can sin stand by itself or is Φ part of sin? sorry i know it sounds kinda confusing but my teacher said to put Φ by itself and I'm not sure if it has to be part of sin

can someone please explain how to do this?

[(x-4) + y]^2

(little carrot thing means exponent)

How would you use conduit in a sentence? btw it is a noun

A regular pyramid has a slant height of 12 and a lateral edge of 15. What is

a.the perimeter of the base?

b.the pyramid's lateral area?

c. the area of the base?

d. the pyramid's total area?

I am just checking to see if i got my answers right because they seem weird looking and i was hoping someone could tell me if i did anything wrong.

a.72

b.432

c.324

d.756

Are any of these wrong? dont just say im right or wrong can you please explain how you did it?

How do i change the designs on a website that i already have on the internet? anyone know of any good online guides on the internet?

How would you find the area of a triangle with sides 3,5,7. i tried finding the height but failed epically since it does not give you the angles. i also used hero's formula but that didn't work either cause i got a non-terminating number(think they're called irrational numbers). anyways i need to find the area of the triangle so i can find the area of a triangular prism with the height of 10. but if you could explain how to find the area of the triangle in radical form it would be greatly appreciated.

I've seen a lot of people with the top contributer thingy under their names. how do you become one?

i know what it means i just cant apply it in a sentence. can someone please help me with this.

Find the measures of the three altitudes of a triangle with sides 13,14,15.(Hint: Use Hero's formula to find the area, and then use

A = ½bh to find each altitude. i have absolutely no idea on how to even start this. i drew the figure and everything but i have no idea how to get the sides to use the hero's formula

what is (5√3/3)^2 * pi

where can i find examples of foreshadowing in the book?

Can anyone help me find a quote that indicates that ender is a good strategist and that he analyzes a situation before taking actions. if you can please tell me what page u found it on.