Recent content by kbump

I know that the volume will change as well. If density decreases, shouldn't volume increase? I'm not sure what to do with this information though. Should I leave T unknown and substitute a T+2 in it's place for the temperature increase of 2 C?

Homework Statement The area of the Earth that is covered by water is 361×10^{6} km^{2}, the volume of the water is 1.4×10^{9} km^{3}, and the mass of the water is 1.4×10^{21} kg. The density of liquid water, as a function of temperature, can be approximated by ρ = 1008 − T /2 kg/m^{3}, where T...

You were right I had my calculator in degrees, thanks! #1 is down, now all I need help on is #2!

1) SOLVED. In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the following expression, where x is in centimeters and t is in seconds. x = (7.00 cm) cos(5t + π/8). (a) at t=0, find the position (b) velocity (c) acceleration For part a, I...

I don't get the solution. It's actually online, so I type my answer and it let's you know if it was correct. I actually tried the same method and got 24, 107, and 49 for my angles, but didn't know where to go from there. I tried typing in 5.79 for part a and it was incorrect. I only have one...

Homework Statement A ferryboat transports tourists among three islands. It sails from the first island to the second island, 4.02 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 69.0° west of north. Finally, it returns to...