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When the tips of the rotating propeller of an airplane have a linear speed greater than the speed of sound, the propeller makes a lot of noise, which is undesirable. If the length of the propeller is
A student pulls (parallel to the incline) on a rope attached to a box of books and moves the box up an incline at 12 degrees with the horizontal. If the box starts at rest at the bottom of the ramp
Gear A, with a mass of 1.75 kg and a radius of 55.0 cm, is in contact with gear B, with a mass of 0.875 kg and a radius of 30.0 cm.The gears do not slip with respect to each other as they rotate. Gear
When two lenses are used in combination, the first one forms an image that then serves as the object for the second lens. The magnification of the combination is the ratio of the height of the final i
A telescope is constructed from two lenses with focal lengths of 90.0cm and 20.0cm , the 90.0?cm lens being used as the objective. Both the object being viewed and the final image are a
Calculate the first five energy levels for CO (C=12,O=16) molecule with bond length of 112.8.assume it rotates freely in the gas phase.assume it is absorbed on a solid surface (A catalytic converter)
1. A gas phase molecules of HCl has a bond length of 127.5pm (Cl=35, H=1). As it rotates in space what is its zero-point energy?what is the smallest amount of energy that this molecule can absorb in r
What is the Lens Equation? What do o, i and f stand for in the equation? What are the five parts of the Optical Bench used in this experiment? Briefly describe what each part does.
What is the minimum frequency of light needed to free an electron from a neon nucleus when the electron is in its lowest energy level n=1?What frequency is emitted by an electron that falls from the n
Copper has a work function of 4.7eV, while gold has a work function of 5.1eV. What are the minimum frequencies of light needed to emit electrons off each metal? Suppose a lamp is made which shines lig
Two identical, square conducting plates of side length 4 cm are located at z = 0 and z = d = 1 cm. The plates are aligned to the axes so that on the plates 0 < x < 4 cm and 0 < y < 4 cm. T
Eight identical non-interacting particles are placed in a cubic box of sides L=0.200nm.Find the lowest energy of the system (in eV) and list the quantum numbers of all occupied states if the part
A laser beam of unknown wavelength is incident on a single slit of width 0.25 mm and forms a Fraunhofer diffraction pattern on a screen 2.0 m away. The width of the central bright fringe is measured t
A parachutist with mass 86.0 kg jumps from an airplane traveling at a speed vi=112 km/hr at a height H=2570 m. He lands with a speed of vf=5.21 m/s. What is the change in mechanical energy of the eart
A small electric car overcomes a 250 N friction force when traveling 30 km/h. The electric motor is powered by ten 12 V batteries connected in series and is coupled directly to the wheels wh
A 7.75- g bullet from a 9-mm pistol has a velocity of 397.0 m/s.It strikes the 0.785- kg block of a ballistic pendulum and passes completely through the block.If the block rises through a distance h =
A ball of mass 0.60 kg is fired with velocity 140 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface.The ball sticks in the barrel at the point of maximum c
Design a cylindrical vacuum capacitor of a given radius a for the outer cylindrical shell, which will be able to store the greatest amount of electrical energy, subject to the constraint that the elec
Find how much energy is needed to remove one of the neutrons from a ^3H atom to yield a ^2H atom plus a neutron.The rest energy for:neutron = 939.565,proton = 938.272,^2H = 1875.613
Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart,measured on the Earth's surface, are New Orleans, LA (2
A frictionless pulley has the shape of a uniform solid disk of mass 5.00kg and radius 25.0cm . A 2.20kg stone is attached to a very light wire that is wrapped around the rim of the pulley(Figure 1) ,
A capacitor consists of three concentric spherical shells with radii R,2R and 3R. The inner and outer shells are connected by a wire (passing through a hole in the middle shell, without touching it),
Im looking at a 12th magnitude bright star. I find an average of 11 speckles of light in each 10ms image.Assuming that the distribution of the speckles are poissonian how many images on average should
An elementary particle of mass M completely absorbs a photon, after which its mass is 1.01M.(a) What was the energy of the incoming photon?(b) Why is that energy greater than 0.01Mc^2?