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Following figure shows a charge q1 of +1.5 µC and a charge q2 of +2.3µC. The first charge is at the origin of an x-axis, and the second is at a position x = L, where L = 13 cm. At what point P along the x-axis is the electric field zero?
The density of silver is 10.5x103 kg/m3 and atomic weight of silver is 107.9. Assuming that each silver atom provides one conduction electron, calculate the density of the electron. If the conductivity of silver at 300K is 6.3 x 107 mho/m then calculate the mobility of electron in silver.
https://docs.google.com/drawings/d/1QNR2JD0TWfX6jTZ0HCIZR2GEXD_mDnLqPwEVQgAh4Bo/edit?usp=sharing
find the tension with the steps
A mercury glass thermometer has a bulb of volume 0.5 cm3 and stem of internal cross-sectional area 4 x 10-4cm2. If the distance between 0 ̊C and 100 ̊C marks of the thermometer is 20 cm, the apparent volume expansivity of mercury in glass is approximately
A ray of light in air “n1”is incident strikes with an angle of incidence of 60 degrees on flint glass”n2”. Calculate the angle of refraction to the nearest degree (8 pts).
1. An object is positioned 15.20 cm from the curvature of a spherical concave mirror with a focal length of 15.50 cm. Locate and determine whether the image is real or virtual, inverted or upright, and enlarged or reduced. Compute also its magnification.
Two charges, q1 and, q2, are located at the origin and at (0.50 m, 0), respectively. Where on the x-axis must a third charge, q3, of arbitrary sign be placed to be in electrostatic equilibrium if
(a) q 1 and q2 are like charges of equal magnitude.
(b) q1 and q2 are unlike charges of equal magnitude.
(c) q1=+3.0 μC and q2=−7.0 μC?
Suppose two students measure the length of a piece of wire three times each. Student A obtains results of 8.09,
8.10, and 8.11 centimeters. Student B obtains determines a length of 8.1 centimeters for all of his three
measurements. Although the average length found for each student’s measurements was 8.1 cm, what
qualitative statements can be made concerning the measurements made by students A and B?
Explain why the hydrogen gas can escape from the earth atmosphere compared to oxygen and nitrogen gases? Explain based on mass, speed and escape velocity of the gases.
A spacecraft moves in a circular orbit around the moon at a speed of 1200 m s-1 . What is the mean distance above the surface the moon? Given the mass and radius of the moon are M 7.7 1022 kg and r 1.7 106 m respectively and G 6.67 1011 Nm2kg2.
