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Author Archives: bi77
Ideal Gases 12-27
What is the average kinetic energy of a gas molecule at a temperature of 25 ?C ? Express it in joules and in electron volts. What is the corresponding rms velocity if the gas is a) hydrogen, b) oxygen, c) … Continue reading
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Force and Equilibrium 2-36
In a stepladder as shown in Fig. 2.38 AC and CE are 2.4 m long and hinged at C. BD is a tie rod 0.72 m long, halfway up. A man weighing 768 N climbs up 1.8 m along the … Continue reading
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Graviiation 15-28
The sun’s mass is about 320,000 times the earth’s mass. The sun is about 400 times as far from the earth as the moon is. What is the ratio of the magnitude of the pull of the sun onthe moon … Continue reading
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Continuun Mecganics 11-59
On aday when the atmospheric pressure is 950 millibars, a) What would be the hight of the mercury column in a barometric tube of inside diameter 2 mm ? b) What would be the hight in the absence of any … Continue reading
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Systems of particles 8-29
Three masses 5kg, 5kg, and 12kg are located at the corners of an equilateral triangle whose side are 4 m long. Find the center of mass from the 12kg mass. Link:Mr.Depong
Vector Additional Problems 1-33
A vector A of magnitude ten units and another vector B of magnitude six units point in direction differing by 60°. Fine (a) the scalar product of the two vectors and (b) the vector product of two vectors.
Vector Additional Problems 1-32
Show that A * (B x C) is equal in magnitude to the volume of the parallelepiped formed on the three vectors A, B, and C.
Vector Additional Problems 1-31
A person flies from Washington to Manila. (a) Describe the displacement vector. (b) What is its magnitude if the latitude and longtitude of the two cities are 39° N, 77° W, and 15° N, 121° E ?
Vector Additional Problems 1-30
Two vector of length A and B make an angle of with each other when placed tail to tail. Prove, by taking components along two perpendicular axes, that the length of thair sum is
Vector Additional Problems 1-29
A room has dimensions 10m x 12m x 14m. A fly starting at one corner ends up at a diametrically opposite corner. (a) What is the magnitude of its displacement? (b) Could the length of its path be less than … Continue reading
