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Two points charges q1= 3.5 mC and q2 = 7.5 mC are initially far apart. They are then brought together, with a final separation of 2.5 meter. Obtain how much work does it take to bring them together?
For a spherical celestial object of radius R, the acceleration due to gravity g at a distance x from the center of the object is g = g0R2/x2, where g0 is the acceleration due to gravity at the object's surface and x > R. For the moon, take g0 = 1.63 ..
A 10-kg body is force against a horizontal elastic springcompressing it an amount of 0.5 meter. When the body was released,it moves on a horizontal distance of 3 meters before coming torest. The force constant of the spring is 50 N/m.
Calculate the pressure at the bottom of the container after an additional 2.15E-3 m3 of this fluidis added to the container. Assume that no fluid spills out of the container
2.0 kg of water at 14 C is mixed with 2.0 kg of water at 53 C in a well-insulated container. Estimate the net change in entropy of the system
With the assumption that the air temperature is a uniform 0.0 , what is the density of the air at an altitude of 4.00 as a percentage of the density at the surface
In a 2-D coordinate system with axes the absolute temperature and volume, graph (a) an isobaric (constant pressure) change of one mole of an ideal gas for p=1 atmosphere, and (b) the same when p=2 atmospheres.
A light ray travels inside a large glass block and approached the glass-air interface at some angle relative to the normal (perpendicular to the surface). After entering the air, the light ray's
A balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. Assume that the stretching of the hose obeys Hooke's law with a spring constant of 53.0 N/m.
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
A cylindrical iron wire of length 16 m is connected to the terminals of a .3 V battery. What is the diameter of the wire, in mm
The bonding of silicon in solids and molecules is qualitatively the same as that of carbon. Silicon atomic states become molecular states and in a solid, these effectively form the valence and conduction bands.
A mechanic turns a wrench using a force of 30 N at a distance of 18 cm from the rotation axis. What magnitude torque does she apply to the wrench
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