Time and Date Stamps (logged): 17:12:20 06-10-2020 °¶Ÿ°±Ÿ±¯¯µŸ°¯Ÿ±¯±¯ Physics II

General College Physics (Phy 202) Test 3

Completely document your work and your reasoning.

You will be graded on your documentation, your reasoning, and the correctness of your conclusions.

** Write clearly in dark pencil or ink, on one side of the paper only. **

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Instructions:

Directions for Student:

Test Problems:

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Constants

Constants:

k = 9*10^9 N m^2 / C^2 qE = 1.6 * 10^-19 C h = 6.63 * 10^-34 J s
energy of n=1 orbital in hydrogen atom:  -13.6 eV k '  = 9 * 10^-7 T m / amp atomic mass unit:  1.66 * 10^-27 kg
electron mass:  9.11 * 10^-31 kg speed of light:  3 * 10^8 m/s Avogadro's Number: 6.023 * 10^-23 particles/mole
Gas Constant:  R = 8.31 J / (mole K) proton mass:  1.6726 * 10^-27 kg neutron mass:  1.6749 * 10^-27 kg

 

 

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Problem Number 1

A straight wire segment is .9 cm long and carries current 24 amps.  A vector from the center of the segment to point P is perpendicular to the segment and has length 22 cm.  Find the magnetic of the field at P due to the segment.

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Problem Number 2

In a certain region, the electric field is uniformly equal to 79 volts / meter. Find

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Problem Number 3

A proton (mass 1.67 * 10^-27 kg) passes to the East through a magnetic field of .0072 Tesla directed vertically downward, crossed with an electric field directed either North or South.  The electron passes through undeflected at a velocity of 4.7 * 10^8 m/s.  Is the electric field directed North or South, and what is the field strength?   What force does the electron experience from each field?

 

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Problem Number 4

A square loop with side 1.6 meters is located in a constant magnetic field of magnitude 10 Tesla.  The loop is initially oriented with its plane perpendicular to the field.  The loop is suddenly turned 90 degrees, so that .047 seconds later its plane is parallel to the loop.  What is the magnitude of the average rate of change of flux in the loop during this time?

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Problem Number 5

A generator has an internal resistance of 44 ohms, creates a potential difference of 3 volts.  The generator is connected to an uncharged capacitor with capacitance .83 Farad in series with a bulb whose resistance is 51 Ohms.   Approximately how long will it take to charge the capacitor to .1 * 3 volts?   How much charge will there be on the capacitor at this time?  What will be the voltage across the bulb at this time?

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Problem Number 6

Find the force on a 1.9 `microCoulomb charge at ( 2.213 m, 3.588 m) due to a charge of -4.701 `microCoulombs at the origin.

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Problem Number 7

A photon of 133.0693 nm electromagnetic radiation encounters an electron in the n = 2 orbital of a hydrogen atom, and causes it to 'jump' to the n = 3 orbital. What will be the wavelength of a photon which carries away any excess energy from the collision?

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Problem Number 8

Find the current through a series combination of 51 Ohm and 51 Ohm resistors if we have a constant 6 Volt potential difference across the series.