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An ant crawls on the surface of a ball of spherical coordinates r=b, phi=wt, theta=(pi/2)*[1+ 1/4 *cos(4wt)]. Find acceleration and xy projection of ant's trajectory if b=1. Does the ant's path change with changing w?
In a Cartesian Coordinate system xyz, vector A has coordinates (0,2,0). What are the coordinates of A in a second right-hand Cartesian Coordinate system x'y'z' where x' and y' point along (-2,1,0) and (1,2,-1) as viewed in the first coordinate system?
What is the Compton effect, What is the shift in the wavelength of x-rays upon Compton scattering
A person weighs 689 N and the head is 53 N the average density of the person is 1010 kg/cubed meters how much force in N is required to keep a persons head out of the water.
An initially motionless car of mass 1000kg slides down from a height on a frictionless roller coaster track. What was the minimum height from which it was released
A microscope has an objective that has a focal length equal to 6.6 mm. what is the laternal magnification of the objective
Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are separated by 12 cm. (Why can you solve this problem without knowing the magnitudes of the charges?)
a softball is hit over a third basemans head with speed v0 and at an angle theta from the horizontal. immediately after
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
You are on an airplane traveling 30° south of due west at 140 m/s with respect to the air. What is the speed of the plane with respect to the ground
A uniform ball with a mass of 125 is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s, What is the rotational kinetic energy of the ball
A ferries wheel with radius 20 m which rotates counterclockwise, is just starting up. Find the magnitude of the passenger's acceleration at the instant
A parallel-plate air capacitor with a capacitance of 233 has a charge of magnitude 0.159muC on each plate. What is the surface-charge density on each plate
Calculate the low calorific power of methane CH4 with air at 298 K, assuming that the products of reaction are CO2 and H2O(gas)
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