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Monochromatic light (Wavelength = 500 nm) passes through two slits and onto a screen 2.5 m away. If two nearby bright fringes are separated by 12 mm, what is the slit spacing? If the slit spacing is reduced by a factot of three, what is the new distance between bright fringes?
The mass of a robot is 5220 kg. This robot weighs 2650 N more on planet A than it does on planet B. Both planets have the same radius of 2.26 × 107 m
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6×10?8s when at rest. Find the average distance traveled by the pion as measured by the same observer
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
A rifle with a barrel length of 62 cm fires a 12 g bullet with a horizontal speed of 460 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 15 cm.
An object located 32.1 cm in front of a lens forms an image on a screen 9.5 cm behind the lens. determine the magnification of the object
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A 2 kg block and a 3 kg block are pushed across a 2 m long frictionless table, Compare the kinetic energies of the two blocks when they reach the end of the table
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 60° C. What is the temperature coefficient of resistivity
A heat engine operates between two reservoirs whose temperatures are 139.3°C, What is the maximum efficiency of this engine
You are given a container with 25.7 g of hydrogen atoms, What is the total charge on the electrons in the container
An extremely thin film of soapy water (n=1.36) sits on top of a flat glass plate with n=1.11. What is the thickness of the film
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
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