Search 79,024 tutors

## Leigh from Winchester, NH's Resources

1. In the circuit, what is the initial value of the current when the switch has been closed? (a) 0 A                          ...

As more identical capacitors C are added to the parallel circuit shown below, the total capacitance between points A and B (a) increases (b) remains the same (c) decreases   +...

The wiring in a house must be thick enough so it does not become so hot as to start a fire. What diameter must a copper wire be if it is to carry a maximum current of 39 A and produce no more than...

1. A copper pipe has an inside diameter of 3.00 cm and an outside diameter of 5.00 cm. What is the resistance of 25.0 m of this pipe?   2. The wiring in a house must be...

1. Find the resistance of a 30 meter length of copper wire of 0.8 mm diameter. 2. How hot would a copper wire need to be for its resistance to be 3% larger than its value at room temperature (20ºC)...

Two point charges, Q1 = 3.7 μC and Q2 = -1.3 μC, are placed on the x axis. Suppose that Q2 is placed at the origin, and Q1 is placed at the coordinate x1 = -5.0 cm. (a) At what point(s) along...

The electric field between the plates of a paper-separated (K=3.75) capacitor is 8.25×104 V/m. The plates are 2.15 mm apart, and the charge on each plate is 0.670 μC.   (a) Determine...

The charge on a capacitor increases by 18 μC when the voltage across it increases from 93 V to 118 V. What is the capacitance of the capacitor?

A large electroscope is made with "leaves" that are 78-cm-long wires with tiny 47 g spheres at the ends. When charged, nearly all the charge resides on the spheres. If the wires...

A large electroscope is made with "leaves" that are 78-cm-long wires with tiny 47 g spheres at the ends. When charged, nearly all the charge resides on the spheres.   If the...

When f(x) is the function whose graph is shown in black below, use known areas to evaluate the integrals.   1. S40 f(x)dx= 2. S60 f(x)dx= 3. S52 f(x)dx= 4. S50 |f(x)|dx=...

Consider the Riemann sum shown in the figure below.   Describe the partition P: x0=     <x1=        <x2=      ...

Consider the following figure. http://www.webassign.net/rogacalcet1/5-1-012.gif Calculate the area of the shaded rectangles. (Round your answer to three decimal places.)

A poster of area 19,440 cm2 has blank margins of width 10 cm on the top and bottom and 6 cm on the sides. Find the dimensions that maximize the printed area. (Let w be the...

1) The titration of 25.0 mL of 0.100 M HCl (hydrochloric acid) 2) The titration of 50.0 mL of 0.100 M H2C2O4 (oxalic acid) 3) The titration of 25.0 mL of 0.100 M HC2H3O2 (acetic acid) 4)...

Calculate the pH of a buffer solution that is 0.250 M in HCN and 0.170 M in KCN. For HCN, Ka = 4.9 × 10^–10 (pKa = 9.31). Use both the equilibrium approach and the Henderson–Hasselbalch approach....

I have an exam today and I need help understanding the difference between conditionnel and imparfait tenses. Can anyone possibly compose a story of multiple paragraphs, that way I can see the patterns...

Consider the reaction:   CO(g)+NH3(g)<=>HCONH2(g), Kc=0.840.   If a reaction vessel initially contains only CO and NH3 at concentrations of 1.00 M and 2.00 M, respectively,...