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A lens for a 35 millimeter camera has a focal length given by f =61 millimeter.
(a) Find how close to the film should the lens be located to form a sharp image of an object that is 7.4 meter away?
________mm
(b) Compute the magnification of the image on the film?
A particle moves along the x-axis. Its position is given by the equation x= 7 + 3t2 - 8t3 with x in meters and t in seconds. Find its position when it changes direction
An astronaut is tethered by a strong cable to a spacecraft. The astronaut and her spacesuit have a total mass of 104 , while the mass of the cable is negligible. What force does the cable exert on the astronaut
A 10 cm wire carrying a current of 20 A is placed in a uniform magnetic field of 0.3 T. If the wire makes a angle of 40 degrees by the vector of magnetic field, discover the magnitude of the force on the wire?
A 47 g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 24.8 m.
The velocity of a 2.50 kg block sliding down a frictionless inclined plane is found to be 1.44 m/s.1.40 s later; it has a velocity of 5.22 m/s. What is the angle of the plane with respect to the horizontal?
A Carnot engine performs work at the rate of 480 kW while using 760 kcal of heat per second. If the temperature of the heat source is 571°C, at what temperature (in Celsius) is the waste heat exhausted
dry air had a co2 mole fraction of 0.00038 in 2007 compared with 0.00032 in 1965. calculate the total mass of co2 that
A Carnot heat engine takes 89 cycles to lift a 15 kg mass a height of 15 m. What is the temperature of the hot reservoir in Celsius
a capacitor is charged to a potential of 12.0 v and is then connected to a voltmeter having an internal resistance of
An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air i..
An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.30 m/son a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 37.0 m/s and passes during the target, which is stopped with the impact. Wh..
Suppose the distance between two objects was doubled and the mass of one of the objects was suddenly cut in a third. How would the gravitational force change
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