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A 50 Newton horizontal force pushes a 10 kilogram mass sitting on a horizontal surface towards the right. Additionally, the horizontal surface exerts a 25 Newton frictional force on the mass. What is the acceleration of the mass and its direction?
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Two plane mirrors are parallel to each other and spaced 20 cm apart. A luminous point object is placed between them and 5 cm from one mirror. What are the distances from each mirror of the three nearest images in each?
A bicycle has wheels with a diameter of 0.680 m. It accelerates uniformly and the rate of rotation of its wheels increases from 211 rpm to 280 rpm in a time of 28.9 s. Find the linear (tangential) acceleration of the rim of the bicycle's wheels..
A goldfish lives in a 50-cm-diameter spherical fish bowl. The fish sees a cat watching it. how far from the edge does the fish see it as being
Two pieces of steel wire with identical cross sections have lengths of L and 2L. what is the frequency of the third harmonic in the longer wire
What was the angle of the hill. what is the current in the circuit when four lamps are turned on.
After our Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state, Calculate the average density of this white dwarf
There has long been an interest in using the vast quantities of thermal energy in the oceans to run heat engines. What is the maximum possible efficiency of such a power plant
a square loop of wire surrounds a solenoid. the side of the square is 0.1 m while the radius of the solenoid is 0.025
A person sitting at a desk which is 51.2 m east and 9.9 m north of the point mid-way between the alarms does not hear them when they sound. What is the lowest frequency that the alarms can be sounding
Estimate the kinetic energy of the Mars with respect to the Sun as the sum of the teerms, that sue to its daily rotation about its axis
What is the radius r of the iron ball?
A discussion of why the ideal gas law is expected to fail at low temperatures and how its failure may affect your estimation of absolute zero.
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