High school: science

Find: It, Vt, V1, V2, V3, R1, and R2   I1 = 2A   I2 = 4A I3 = 6A   R1 = ? R2 = ? R3 = 8 ohms    

If 10 drops of 0.5 mol L-1 Na3PO4(aq) had been added to the sample containing excess 0.25 mol L-1 Ca(NO3)2(aq), what mass of precipitate would you expect to produce? You may assume one drop is... more

A small car of mass 500kg is travelling at 120km/h when it hits stationary truck (of 1.5 tonne mass) head on. The small car rebounds and travels in the opposite direction at 40km/h. The collision... more

A rocket is standing by to launch. While sitting on the launching pad the rocket has zero velocity and thus zero initial momentum (p1=0). When the rocket takes off, a bystander proclaims that the... more

BD IS THE DIAGONAL AND DRAW AC A DIAGONAL  BP + PQ+DP =BD

I need these questions done for my homework

I need to know how much we all paid and how much is 17 and 1/2 percent VAT. Is it add or times or is  all of the formulas.

and any examples? thank you so much

im tring to find the answer cause i been trying all week to answer it and it take a long time  

is it true or false

Multiple choice: A) Their monomers B) Their helical structure C) They are polar and other macromolecules are not. D) They are formed via dehydration synthesis.   Note: The correct answer is A... more

examples, linear, bent, trigonal planar.....

I'm having such a hard time with this..It's my physics HW and I don't know how to solve this.

Explain what would happen if a reactant molecule with a different shape to the enzyme came in contact with the enzymes active site     I need need the answer ASAP  thanks dudes 

Starting with one bacterium, how many bacterial cells would be expected from 6 cycles of Binary Fission?   Is 62 correct?   Thanks in advance for your help :)  

(a) What is the runner's average velocity for the first 9 min? km/h (b) What is the average velocity for the time spent walking? km/h (c) What is the average speed for the whole trip? km/h