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A lens for a 35-mm camera has a focal length given by f = 67 mm.
(a) How close to the film should the lens be placed to form a sharp image of an object that is 7.3 m away?
(b) What is the magnification of the image on the film?
An emf is induced in a conducting loop of wire 1.14m long as its shape is changed from square to circular, Find the average magnitude of the induced emf if the change in shape occurs in 4.23s
In a refrigerator the working fluid remains a gas throughout the cycle. Its working may be described in a greatly simplified form as a sequence of four steps as follows: 1 The fluid passes through the refrigerated compartment, where its temperatur..
When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39 m. Compute the horizontal distance the ball would travel if the same spring were aimed 28.0 deg from the horizontal.
In an amusement park ride, cars are suspended from L = 4.29 m cables attached to rotating arms at a distance of D = 6.11 m from the axis of rotation. What is the angular speed of rotation
An electric power station is producing 1.2 x 10+3 W of power that is to be sent to a small town located 11 km away. Find the power lost in heating the wires
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 , length 91.1 and diameter 2.45 from a storage room to a machinist. Calculate the weight of the rod, . The acceleration due to gravity, = 9.81 .
The reactance of a capacitor is 2.5 k? at a frequency of 1.5 kHz. What is the capacitance in nano-farads
An undamped 1.58-kg horizontal spring oscillator has a spring constant of 22.8 N/m. What is the oscillator\'s total mechanical energy
Three point charges, A = 1.80 µC, B = 7.50 µC, and C = -3.80 µC, are located at the corners of an equilateral triangle, Find the magnitude (N/C) at point A, and the direction in degrees counterclockwise from the positive x-axis
A rectangle measuring 30.0 {rm cm} by 40.0 {rm cm} is located inside a region of a spatially uniform magnetic field of 1.30 T, with the field perpendicular to the plane of the coil. The coil is pulled out at a steady rate of 2.00 {rm{ cm/s}} travelli..
Structure Polar's acquisition problem as a decision tree and solve (using EMV criteria) for the optimal decision strategy for Polar.
A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 24 degrees. If the mirror is now rotated so that the angle of incidence increases by 6.0 degrees, what is the new angle between the..
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