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The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long. Suppose an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. Decide the rotation rate, in revolutions per second, needed to give the astronaut a centripetal acceleration of 20.0g.
An emf of 10 V is connected to a series RC circuitconsisting of a resistor of 1.3 x 106 Ω and a capacitor of2.9 µF. Find the time required for the charge on the capacitor to reach 89% of its final value.
Light of wavelength 646nm from a distant source is incident on a slit .720mm wide, What is the distance between the two dark fringes on either side of the central bright fringe
Point charges of 6.2*10^-8 C and -6.4*10^-8 C are placed 72 cm apart. A third point charge of 6.3*10^-8 C is placed half way between the first two point charges
In a physics lab, light with a wavelength of 560nm travels in air from a laser to a photocell in a time of 17.3ns. What is the wavelength of the light in the glass
An initially uncharged 3.87-?F capacitor and a 6.99-k? resistor are connected in series to a 1.50-V battery that has negligible internal resistance. What is the initial current in the circuit, expressed in milliamperes?
question a swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. she is swept
in the sum a b c vector a has a magnitude of 11.0 m and is angled 33.5deg counterclockwise from the x direction and
Two neutrons are in an infinite square well with L=2.0 fm. What is the minimum total energy that the system can have? (Neutrons, like electrons, have antisymmetric wave functions. Ignore spin.)
A radar has a resolving power of 30 m at a range of 1.0km. What is the minimum width of its antenna if its operating frequencyis 9500 MHz
A 1.4 kilogram block is pushed up a frictionless 14o incline from point A to point B by a force (magnitude p=6.0 n). evaluate how much work is done on block by the force P between A and B
A spherical concave lens has a focal length of 40 cm, and an object is placed 20 cm from the lens. Draw a ray diagram. (Submit a file with a maximum size of 1 MB.) Estimate the image distance
A satellite has a mass of 5939 kg and is in a circular orbit 4.94 × 105 m above the surface of a planet. The period of the orbit is 2.3 hours. What would be the true weight of the satellite
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