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A movie camera with a (single) lens of focallength 75 mm takes a picture ofa person standing 34 m away. If the person is 190 cm tall, whatis the height of the image of the person on the film?
Three capacitors with capacitances C1 = 2.9 nF, C2 = 3.1 nF, and C3 = 1.7 nF are wired to a battery with V = 14.3 V, What is the potential drop across capacitor 2
A cook puts 9.20 g of water in a 2.00-L pressure cooker that is then warmed to 470°C. What is the pressure inside the container
A high intensity desk lamp is rated at 45W but requires only 12V. It contains a transformer that converts 120V household voltage. What is the current in the secondary coil
A positive charge, Q = 45 is placed on the x-axis at x = -1.9 cm. A positive charge which is twice as large is brought from infinity to a point x = +1.9 cm on the x-axis. what would be the speed of the 2*(45) charge at infinity
Two converging lenses which have focal lengths of +3.0 cm and +2.0 cm are 10 cm away from each other. find the height of the image formed by the seconds lens
In a game of pool, a cue ball with an initial velocity of 1.50 m/s directed to the right (along the +x-axis) collides with the five ball, Find the cue ball's final velocity
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
The light shining on a diffraction grating has a wavelength of 494 nm (in vacuum). How many lines per centimeter does the grating have
Three point masses each of mass m are connected by two thin rods each of mass M and length L. The central mass is at an origin and the z-axis is directed out of the page.
An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50s. what is the average speed of the object
1.) A 0.50kg bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog. 2.) A second 0.50kg bullfrog is on a log tilted 38 above horizontal. How large is the normal force of the log on this bullfrog
In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in the cylinder
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