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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 nearsighted person wears glasses to correct the problem. How far from the eyes is the person's far point located
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
A hydrolic lift (starting with both pistons at the same height) isused to jack a 970kg car 12cm off the floor in steps. The diameterof the output (lift) piston is 18cm and the input force is250N.
An auditorium measures 35.0 m x 25.0 m x 11.0 m. The density of air is 1.20 kg/m3. What is the volume of the room in cubic feet
a crossed-field velocity selector has a magnetic field of magnitude 0.045 t. the mass of the electron is 9.10939 times
The density of water at 0°C is 999.84 kg/m3 and at 4°C it is 999.96 kg/m3. find how much of the water has spilled from the container, assuming that the contraction of the container is negligible
Calculate the electrical energy utilized by a household whose monthly electrical bill is $44, computed at the rate of $0.07 per kWh. How long could this energy be used to burn ten 12 W light bulbs?
A solid non conducting sphere of radius r = 14 cm has a charge distribution q(r) ~ 15 nano-C/cubic meter *radius*radius. Discover the total charge on the sphere
Determine the least value of n for which there is total internal reflection on the vertical surface.
A binary star system consists of two equal mass stars that revolve in circular orbits about there center of mass. What is the mass (kg) of each star
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
Some cell walls in the human body have a layer of negative charge on the inside surface and a layer of positive charge of equal magnitude on the outside surface, Estimate the total electric-field energy stored in the wall of a cell of this size
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