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## Category: Physics # Order answer: In a rectangular coordinate system, a positive point charge q = 3.00 nC is placed at the point x=…

Posted By George smith

In a rectangular coordinate system, a positive point charge q =
3.00 nC is placed at the point x= 0.190 m , y=0, and an identical
point charge is placed at x= -0.190 m , y=0. Find the x and y
components and the magnitude # Order answer: 1) In a racetrack, cars are expected to be moving with a speed of approximately 120m/s. If the tu…

Posted By George smith

1) In a racetrack, cars are expected to be moving with a speed
of approximately 120m/s. If the turns in the track are quarter
circles with radius 150m, at what angle should the tracks be banked
so that the cars can make the turn without # Order answer: Two moles of carbon monoxide (CO) start at a pressure of 1.1 atm and a volume of 54 liters. The g…

Posted By George smith

Two moles of carbon monoxide (CO) start at a pressure of 1.1 atm
and a volume of 54 liters. The gas is then compressed adiabatically
to 1/3 this volume. Assume that the gas may be treated as ideal.
What is the change in the internal # Order answer: Approximate a fishing reel to be two solid disks, each of radius 6.1 cm and combined mass 0.85 kg…

Posted By George smith

Approximate a fishing reel to be two solid disks, each of radius 6.1 cm and combined mass 0.85 kg which can rotate without friction. String (of negligible mass) is wrapped around the reel (between the disks) all the way to its edge (see Fig 1a). # Order answer: The electric potential in a region of space is V = 300V. m/Squareroot x^2 + y^2, where x and y ar…

Posted By George smith

The electric potential in a region of space is V = 300V. m/Squareroot x^2 + y^2, where x and y are in meters. What is the strength of the electric field at (x, y) = (2.5m, 1.4m)? Express your answer using two significant # Order answer: We have an initially uncharged hollow metallic sphere with radius of 5.0 cm. I place a small obje…

Posted By George smith

We have an initially uncharged hollow metallic sphere with radius of 5.0 cm. I place a small object with a charge of the Not yet answered +10 mu c at the center of the s Through a hole in the surface Find the electric field # Order answer: Calculate the pH of a solution prepared by dissolving 0.150 mol of acetic acid and 0.300 mol of s…

Posted By George smith

Calculate the pH of a solution prepared by dissolving 0.150 mol
of acetic acid and 0.300 mol of sodium acetate in water sufficient
to yield 1.00 L of solution. The Ka of acetic acid is 1.76
x10^-5. # Order answer: Bar AB rotates uniformly about the fixed pin A with a constant angular velocity omega. Determine …

Posted By George smith

Bar AB rotates uniformly about the fixed pin A with a constant angular velocity omega. Determine the velocity and acceleration of block C, at the instant theta = 30 degree. # Order answer: A circuit is connected as shown in the figure. Note that the negative terminal of the power suppl…

Posted By George smith

A circuit is connected as shown in the figure. Note that the negative terminal of the power supply is grounded (the potential = 0 V at this point). (a) Find the current through the point a. Show all your work and explain your reasoning. # Order answer: A negatively charged particle, -q, is placed at the center of a uniformly charged ring with a pos…

Posted By George smith

A negatively charged particle,
-q, is placed at the center of a uniformly charged ring with a
positive charge Q and radius R as shown in the figure. The particle
is confined to move along the x axis and displaced a small distance
from the