# Recent content by h_k331

1. ### How do I determine which chemical is in which bottle

Thanks Astronuc. hk
2. ### How do I determine which chemical is in which bottle

In reply to my own post, I was reading over the solubility rules again and noticed that compounds containing sulfide are insoluble. I sopose I just need to put a small amount of each in water and see which one remains solid. hk
3. ### How do I determine which chemical is in which bottle

I have two bottles of chemicals. I know that one bottle is Copper (II) Sulfide, and the other is Copper (II) Sulfate Pentahydrate. One bottle contains blue crystals and the other bottle contains black crystals. Problem is, the bottles aren't labeled, so the question is how do I determine...
4. ### Orbiting Satellite.

Thanks Janus. hk
5. ### Orbiting Satellite.

I was hoping someone could check my work for me. Question: A satellite is in circular orbit 600 km above the Earth's surface, where the free-fall acceleration is 8.21 m/s^2. Take the radius of the earth as 6400 km. Determine the speed of the satellite and the time required to complete one...
6. ### Is velocity something an object has or something object experiences?

That answers my question, thank you much M.Hamilton. hk

8. ### How does a computer calculate acceleration and velocity?

Time--Position--Velocity--Acceleration -(s)-----(m)-----(m/s)-----(m/s^2) 1.50___0.300____0.236______0.136 1.55___0.311____0.242______0.132 1.60___0.323____0.254______0.086 1.65___0.338____0.257_____-0.005 1.70___0.350____0.250_____-0.043 hk
9. ### Acceleration due to gravity pls HELP!

I'll take a shot at it for you. I'm just learning this stuff too so I hope I don't misguide you. Position as a function of time can be described by xf = xi + vi*t + 0.5*a*t^2 where xf is final position, xi is initial position, vi is initial velocity, a is acceleration, and t is time. What...
10. ### Urgent help needed on car project

You could use a mouse trap for the propulsion mechanism. hk
11. ### How does a computer calculate acceleration and velocity?

I don't know the make or model, I do know it uses sound waves for motion sensing. hk
12. ### How does a computer calculate acceleration and velocity?

I am doing another lab report on motion. For this lab we used a motion detector connected to a computer to collect and display data about an object in motion. The question that I am having trouble with is how does the computer calculate velocity and acceleration based on the position data...
13. ### Simple question about velocity and acceleration

Thanks Andrew. hk
14. ### Velocity and Distance

I'm curious as to what kind of bird this is that flies at 177.2 km/h. hk
15. ### Question concernig E=MC^2

To be exact, the speed of light in a vacuum is actually 299,792.458 km/s. hk