Recent content by cyberdx16

nvm got it

Time Dilation help please Homework Statement A spaceship is moving at 0.75 c (0.75 times the speed of light) with respect to the earth. An observer on the spaceship measures the time interval between two events on Earth as 38 hrs. If the spaceship had been moving with a speed of 0.92 c with...

so Fobserver is 1300000Hz, Vsource is .38m/s, and Vobserver is 1540 m/s? so i would do 1300000=Fsource (345 + 1540/345-.38) take this # and subtrack by 1300000?

Homework Statement Ultrasound reflected from an oncoming bloodstream that is moving at 38 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.) Homework Equations Fo=Fs(v+Vo/v) Fb- (F2-f1) The...

Homework Statement A cylinder with a piston is filled with ideal gas. The gas temperature is held at 450 K. The cylinder is heated by an oven through a square metal rod connected between the oven and the cylinder. The rod has sides d = 1 cm and length L = 2.3 m. (a) If the oven is held at...

alright gotcha! i guess i didnt take into consideration that ice metals and turns to h20 (l) and heats up to 17C

I still have no clue wtf is going on... now would i use the equation Q=mL for the ice? that would give me 2400cal... Then take the Qw=1404000/Qice=2400? but that gives me 585, which is not the correct answer

Homework Statement Trying to beat the heat of summer, a physics grad student went to the local toy store and purchased a child's plastic swimming pool. Upon returning home, he filled it with 156 liters of water at 26°C. Realizing that the water would probably not be cool enough, he threw ice...

figured it out, mass should of been .032Kg/6.022e23

Homework Statement A syringe of volume 20 ml has just been used and now lies empty on the doctor's desk. The pressure in the office is 100,000 Pa. Assume that the air is an ideal gas consisting of nitrogen N2 (80%) and oxygen O2 (20%) molecules. k=1.38×10-23 J/K and the molar mass of oxygen is...

yeah you are right denverdoc! thx

wouldn't the presure rate be increased by .3 so from its original, which is 1 and add .3 for the increase. But yeah i just tried .3 and it didnt work

Homework Statement When physicians diagnose arterial blockages, they quote the reduction in flow rate. If the flow rate in an artery has been reduced to 30% of its normal value due to plaque formation, and the average pressure difference has increased by 30%, by what factor has the plaque...

Homework Statement As you approach the I-90 exit in your uncle's little red sports car convertible, you happen to notice a cat crossing the road. Not that you have any particular love of cats (especially this one, whose snooty disposition seems to beckon for a game of chicken), but you swerve...

I don't really know where to start with this, here's the question the general formula for the copper ammine complex is [Cu(NH3)x]SO4*H2O calculate the formula weight for several X values of X.(What are reasonable values for x?) Do i just plug in random #s for X and figure out the...