inCredible

When resistors 1 and 2 are connected in series, the equivalent resistance is 15.9 Ω. When they are connected in parallel, the equivalent resistance is 3.20 Ω. What are (a) the smaller resistance and (b) the larger resistance of these two resistors?

A) ______ohms

B)________ohms

In the figure the capacitances are C1 = 1.0 µF and C2 = 4.2 µF, and both capacitors are charged to a potential difference of V = 120 V but with opposite polarity as shown. Switches S1 and S2 are now closed. (a) What is now the potential difference between points a and b? What now is the charge in microcoulombs on capacitor (b) 1 and (c) 2?

http://edugen.wileyplus.com/edugen/courses/crs4957...

I have no idea how to even start this.

A charged isolated metal sphere of diameter 14 cm has a potential of 7000 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.

Answer _______J/m^3

I got .11 and i got marked wrong. I don't get what I am doing wrong.

In the figure what is the net electric potential at point P due to the four particles if V = 0 at infinity, q = 3.97 fC, and d = 7.68 cm?

http://edugen.wileyplus.com/edugen/courses/crs4957...

Answer: ______ V

Find the velocity, acceleration, and speed of a particle with the given position function. Sketch the path of the particle and draw the velocity and acceleration vector for the dpecified value of t.

a) r(t)=<-1/2t^2, t> t=2

b) r(t) = < 2-t, 4(square root (t))> t=1

Distinguished peaks in mass spectra between 2,4-dimethylhexane and 2,5-dimethylhexane?

Which peaks occur in one isomer and but not the other isomer? Which peaks could be used to distinguish one isomer from the other?

Please Explain!

possible answers:

m/z 29

m/z 43

m/z 57

m/z 71

m/z 85

m/z 99

m/z 114

If you combine 36 kg of ice at 0°C with 67 kg of steam at 100°C, what is the final temperature of the system?

_____ degree Celsius

Please help! so confused

A swimming pool of depth 2.7 m is filled with ordinary (pure) water (ρ = 1000 kg/m3).

(a) What is the pressure at the bottom of the pool?

Pa = 127760

(b) When the pool is filled with salt water, the pressure changes by 5.1 *10^3 Pa. What is the difference between the density of the salt water and the density of pure water? ______kg/m^3

I got part a, but I am a little confused on part b. Please help!

You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 288 N for 6.5 s, during which time the refrigerator moves a distance of 3.3 m at a constant velocity.

(a) What is the total work (by all forces) done on the refrigerator? _____J

(b) What is the work done by friction? _____J

Draw the Lewis electron dot structures for oxalic Acid and the oxalate ion? how do i even draw that?! and then how do you know if either the oxalic acid or the oxalate ion have important resonance forms? and if they do how would i draw those?... Please help!

Write the net ionic equation for the reaction of KMnO4 with the saturated solution of CdC2O4 in dilute H2SO4. The Major products are Mn2+ and CO2

Also...

Why is the concentration of solid CdC2O4 considered a constant?